|
US$319.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
HJ 2017-2012: Technical specifications for dry-detoxification treatment and disposal of chromium residue
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| HJ 2017-2012 | English | 319 |
Add to Cart
|
3 days [Need to translate]
|
Technical specifications for dry-detoxification treatment and disposal of chromium residue
| Valid |
HJ 2017-2012
|
PDF similar to HJ 2017-2012
Basic data | Standard ID | HJ 2017-2012 (HJ2017-2012) | | Description (Translated English) | Technical specifications for dry-detoxification treatment and disposal of chromium residue | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z13 | | Classification of International Standard | 13.030.10 | | Word Count Estimation | 12,177 | | Quoted Standard | GB 4387; GB 8978; GB 12801; GB 18597; GB 18599; GB 50019; GB/T 50326; GBZ 1; GBJ 87; HG/T 20566; HJ/T 301; JB/T 6811; JC/T 357 | | Regulation (derived from) | Department of Environmental Protection Notice No. 21 of 2012; | | Issuing agency(ies) | Ministry of Ecology and Environment | | Summary | This standard specifies the detoxification of chromium slag disposal of dry overall requirements engineering, process design, testing and process control, aided engineering, labor safety and occupational health, construction and environmental protection a | HJ 2017-2012: Technical specifications for dry-detoxification treatment and disposal of chromium residue
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical specifications for dry-detoxification treatment and disposal of chromium residue
National Environmental Protection Standard of the People's Republic
Technical specification for dry detoxification treatment and disposal of chromium slag
Technical specifications for dry-detoxification
Treatment and disposal of chromium residue
Published on.2012-03-19
2012-06-01 Implementation
Ministry of Environmental Protection released
HJ □□□-20□□
Content
Foreword.1
1 Scope. 2
2 Normative references. 2
3 Terms and Definitions..2
4 pollutants and pollution load..2
5 General requirements.3
6 Process Design.3
7 Detection and Process Control.6
8 auxiliary engineering.7
9 Labor Safety and Occupational Health 7
10 Construction and Environmental Protection Acceptance..8
11 Operation Management 8
12 Pollution Control and Environmental Management..8
HJ □□□-20□□
Foreword
To implement the Environmental Protection Law of the People's Republic of China, the Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Waste, and China
Law of the People's Republic of China on Prevention and Control of Water Pollution, standardizing the construction of engineering and operation of facilities for the detoxification treatment and disposal of chromium slag, and realizing chromium slag
Harmless treatment and disposal, improve environmental quality, and develop this standard.
This standard specifies the general requirements, process design, testing and process control, auxiliary engineering, and process of chromium slag dry detoxification treatment and disposal project.
Technical requirements for labor safety and occupational health, construction and environmental protection acceptance, and project operation management.
This standard is the first release.
This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection.
This standard is mainly drafted by. Liaoning Academy of Environmental Sciences, CITIC Jinzhou Ferroalloy Co., Ltd., Shenyang Environmental Science
Research Institute, Northeastern University.
This standard was approved by the Ministry of Environmental Protection on March 19,.2012.
This standard has been implemented since June 1,.2012.
This standard is explained by the Ministry of Environmental Protection.
Technical specification for dry detoxification treatment and disposal of chromium slag
1 Scope of application
This standard specifies the general requirements, process design, testing and process control, auxiliary engineering, and process of chromium slag dry detoxification treatment and disposal project.
Requirements for labor safety and occupational health, construction and environmental protection acceptance, operation management, pollution control and environmental management.
This standard applies to the chromium residue dry detoxification project, as environmental impact assessment, feasibility study, design and construction, completion acceptance, ring
Technical basis for environmental protection acceptance and operation and management after completion.
2 Normative references
The contents of this standard refer to the terms in the following documents. For undated references, the valid version applies to this standard.
GB 4387 Industrial Enterprise Safety Regulations for In-plant Transportation
GB 8978 Integrated Wastewater Discharge Standard
General rules for safety and health requirements of GB 12801 production process
GB 18597 Hazardous Waste Storage Pollution Control Standard
GB 18599 General industrial solid waste storage and disposal site pollution control standards
GB 50019 Heating, Ventilation and Air Conditioning Design Code
GB/T 50326 Construction project management specification
GBZ 1 industrial enterprise design hygiene standard
GB J 87 Industrial Enterprise Noise Control Design Specification
HG/T 20566 rotary kiln design regulations
HJ/T 301 Technical Regulations for Environmental Protection of Chromium Slag Pollution Treatment (Provisional)
General technical conditions for JB/T 6811 industrial furnace kiln microcomputer control device
JC/T 357 Mechanical shaft kiln for cement industry
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1 Dry-detoxification to chromium residue
The rotary kiln or the vertical kiln is used as a calcining device, and the hexavalent chromium in the chromium slag is reduced to trivalent chromium by using a reducing substance at a high temperature.
The process of fixing it at room temperature.
3.2 Dry-detoxified chromium residue
After high-temperature reduction treatment in a special facility, it can be used as non-toxic waste for comprehensive utilization or other final disposal of chromium residue.
4 Contaminants and pollution loads
4.1 Chromium slag is generally loose, irregular solid powder, granular or small pieces, the overall color is gray or black and mixed with yellow
Or yellowish brown; after a long time in the open air, there is obvious yellow matter oozing out and the exudate is yellow.
4.2 The chemical composition of chromium slag is shown in Table 1. The sample should be sampled and analyzed before design, and the measured results should be used as the engineering design basis.
Table 1 Main chemical components of chromium slag
Composition SiO2 Al2O3 CaO MgO Fe2O3 Cr2O3 hexavalent chromium
Content range (%) 4～11 6～10 2～35 15～33 7～25 2～9 0.5～2
4.3 Density and corrosivity of chromium slag shall be tested in accordance with HJ/T 301-2007 “Technical Specifications for Environmental Protection of Chromium Slag Pollution Treatment” 5.4.
4.4 The engineering design is based on the actual amount of chromium slag. If there is no data, it can be estimated according to Table 2.
Table 2 Production of chromium slag in different chromium compound production processes
Chromium compound products
Production process has calcium roasting, less calcium roasting, no calcium roasting
Non-kiln method
(containing calcium chromium residue)
Chromium slag (t)/sodium dichromate (t) 1.5 or more 0.8 to 1.5 0.8 or less 0.4 to 0.6
5 General requirements
5.1 General provisions
5.1.1 The design of the chromium slag dry detoxification treatment and disposal project shall comply with the current national laws, regulations and standards, in addition to complying with this standard.
The relevant provisions of the specification.
5.1.2 Encourage the comprehensive utilization of chromium slag, and the comprehensive utilization of chromium slag must be based on the premise of harmlessness.
5.1.3 Detoxification chromium slag should meet the relevant provisions of Appendix D of HJ/T 301-2007 “Technical Specifications for Environmental Protection of Chromium Slag Pollution Control”.
5.2 Project composition
5.2.1 The project mainly includes main works, auxiliary works and supporting facilities.
5.2.2 Main works include. raw material preparation unit, feed unit, reduction calcination unit, cooling unit, storage unit.
5.2.3 Auxiliary works include. power supply and distribution, telecommunications, water supply and drainage and fire protection.
5.2.4 Supporting facilities include. office, laboratory, duty room, etc.
5.3 Construction scale
5.3.1 The construction scale of the chromium slag dry detoxification treatment and disposal project should comprehensively consider the annual production of chromium slag and regional development planning.
5.3.2 The processing capacity of the chromium slag dry detoxification kiln should be designed according to the rotary kiln from 100t/d to 400t/d and the vertical kiln from 30t/d to 50t/d.
5.4 Site selection
5.4.1 The site selection of the project shall comply with the relevant provisions of GBZ 1 and shall also comply with the distribution of chromium slag, current laws, regulations and regulations.
Fan's relevant regulations.
5.4.2 The chromium slag disposal production line should be built near the chromium salt production plant or the chromium slag yard to reduce the risk of chromium slag transportation.
5.5 General layout
5.5.1 The general layout shall comply with the relevant provisions of GBZ 1 and shall also comply with the relevant provisions of the current laws, regulations and norms.
5.5.2 The general layout should be arranged with the rotary kiln or shaft kiln as the main body, and other facilities should be properly handled according to the hazardous waste treatment process.
row.
5.5.3 The main equipment and other facilities should be arranged in a centralized manner to shorten the connecting pipeline between the equipment.
6 Process design
6.1 General requirements
6.1.1 Chromium slag dry detoxification project consists of raw fuel preparation unit, feed unit, reduction calcining unit, cooling unit, storage unit, etc.
The composition of the art. The process flow of the rotary kiln dry detoxification treatment and disposal project is shown in Figure 1. The process of the vertical kiln dry detoxification treatment and disposal project
The process is shown in Figure 2.
Figure 1 Flow chart of dry detoxification process in rotary kiln
Figure 2 Flow chart of the detoxification process of the shaft kiln
6.1.2 The specifications and service period of each unit main equipment shall be reasonably configured according to the scale of chromium slag treatment.
6.1.3 The dry detoxification treatment and disposal project of chromium slag reconstructed from the original rotary kiln or shaft kiln and its ancillary equipment shall be in accordance with the provisions of this standard.
Construction.
6.1.4 Production line equipment and facilities that generate dust and unorganized emissions should be sealed and dusted as much as possible, and negative pressure operation should be carried out to protect
After the purification of the dust, the relevant provisions of HJ/T 301-2007 “Technical Specifications for Environmental Protection of Chromium Slag Pollution Control” 10.1.6 are met.
6.2 Raw fuel preparation unit
6.2.1 The raw material preparation unit for dry detoxification of chromium slag consists of drying equipment, crushing or grinding equipment, screening equipment, conveying equipment and dust removal equipment.
Preparation, silo composition.
6.2.2 Chromium slag, reduced coal, fuel coal and other raw materials should be dried, crushed or ground to ensure particle size and reduce moisture.
6.2.3 Drying, crushing, grinding and other processing processes should strengthen the system seal and configure dust removal equipment to achieve negative pressure operation and ensure powder
After dust purification, it meets the relevant provisions of HJ/T 301-2007 “Technical Specifications for Environmental Protection of Chromium Slag Pollution Control”.
6.2.4 Related requirements for detoxification of rotary kiln
a) The chromium slag particle size should be controlled below 10 mm;
b) The particle size of the reduced coal should be controlled between 2 mm and 5 mm, and the volatile matter should be less than 8%;
c) The thermal value of fuel coal coal is not less than 6000 kCal/kg, the volatile content is not less than 25%, and the ash content is not higher than 10%.
d) The particle size of the fuel pulverized coal should be controlled at 0.08 mm, the remaining 10% to 12% of the sieve, and the moisture content of 1% to 1.5%.
6.2.5 Requirements for detoxification of shaft kiln
a) The particle size of the mixture of chromium slag, fuel coal and other raw materials should be controlled at 0.08 mm and the sieve residue should be ≤10%.
b) Anthracite should be used for fuel coal.
6.2.6 The raw material storage after preparation shall be equipped with a silo with dust removal equipment.
6.3 Feed unit
6.3.1 Chromium slag dry method Detoxification feeding unit consists of measuring equipment, mixing conveying equipment and dust removal equipment. Dry kiln dry detoxification feed
The unit should also include a homogenization facility and a pelletizing device that stabilize and uniform the composition.
6.3.2 The equipment of the feeding unit should be stable and reliable, with low failure rate and easy maintenance.
6.3.3 Metering equipment should be accurately measured and feedstock control should be stable.
6.3.4 Hybrid conveying equipment should be reinforced, equipped with dust removal equipment, reduce the drop point of the transfer point, and carry out negative pressure operation to prevent dust from overflowing.
Ensure that the dust generated by the mixing process meets the requirements of HJ/T 301-2007 “Technical Specifications for Environmental Protection of Chromium Slag Pollution Treatment” 10.1.6
Customs regulations.
6.3.5 The raw materials of the dry kiln dry detoxification chromium slag should be homogenized in the homogenization facility after mixing and grinding, and the homogenization facilities should be equipped with dust removal facilities.
Prepare to ensure that the flue gas purification meets the relevant provisions of HJ/T 301-2007 “Technical Specifications for Environmental Protection of Chromium Slag Pollution Control”. All
The chromium residue after the treatment should be wetted, and prepared into raw balls by the ball forming equipment, and the dust removing equipment should be arranged in the process of forming the ball.
6.4 Reduction of calcination unit
6.4.1 Rotary kiln
a) The design of the rotary kiln should refer to HG/T 20566.
b) The length to diameter ratio of the rotary kiln should be controlled between 16.1 and 20.1; when using coal-fired fuel, the diameter of the kiln should not exceed 3.5m, and the slope should be controlled.
3.5% to 4.0%; the speed should be controlled from 0.5 rpm to 3.5 rpm.
c) The temperature of the high temperature zone in the rotary kiln should be higher than 850 °C, and the residence time of the chromium slag in the kiln should be controlled within 30min~40 min.
d) The burner with high air volume and low air temperature should be used to accelerate the mixing of fuel and combustion air.
e) The combustion equipment of the rotary kiln should enable the fuel coal to be ignited early and burned quickly.
f) The flue gas ventilation system of the rotary kiln should fully consider the recycling route of thermal energy in the rotary kiln system, and it is advisable to provide an air heat exchanger.
High combustion air temperature, while reducing the temperature of high-temperature waste flue gas, in order to facilitate subsequent dust removal operations.
6.4.2 Vertical kiln
a) The design of the vertical kiln should refer to JC/T 357.
b) The height-diameter ratio of the shaft kiln should be controlled from 3.1 to 4.1.
c) The temperature of the high temperature zone in the vertical kiln should be higher than 1200 °C, and the temperature of the kiln should be controlled at 500 °C. The residence time of chromium slag in the kiln should be greater than
30 min. The thickness of the wet layer in the shaft kiln should be controlled from 0.2 m to 0.5 m.
6.5 cooling unit
In order to prevent the deoxidation of chromium slag, trivalent chromium is oxidized to hexavalent chromium under high temperature conditions, and a cooling unit should be provided.
The cooling method should be cooled by water spray. Water spray quenching cooling unit consists of cutting pipe/slot, cooling reduction device, water spray device, set
It consists of a sink and water circulation treatment equipment and dust removal equipment.
6.5.1 Rotary kiln
a) Cooling equipment appropriate to the specifications of the rotary kiln should be used, which should effectively block the water vapor generated by the cooling water from entering the rotary kiln.
b) The blanking pipe/slot connecting the rotary kiln and the reduction cooling equipment shall be made of thick-walled heat-resistant steel material with a heat-resistant temperature not lower than 500 °C.
c) The coolant should be clean water or ferrous sulfate solution.
d) The cooling method of the rotary kiln equipment should be sprayed, the nozzle hole of the nozzle should be controlled at 0.8mm~1.2mm, and the water pressure should be controlled at.200KPa~
300 KPa, the temperature after detoxification chromium slag spray cooling should be controlled at 150 ~ 250 °C.
e) Dust removal equipment should be selected to suit the purification equipment of high humidity dusty waste flue gas.
6.5.2 Vertical kiln
a) Spray cooling should be adopted, and the spray volume of the nozzle should be controlled at 190Kg/t.
b) A spray cooling device shall be provided at the discharge port to accelerate the cooling of the detoxification chromium slag from the kiln.
c) The coolant should be a solution prepared with ferrous sulfate solution or other reducing agent.
d) Under the premise of ensuring stable combustion, it is advisable to reduce the burning rate and speed up the unloading speed, compress the cooling zone and reduce the trivalent
The probability of chromium being reoxidized to hexavalent chromium.
e) Dust removal equipment should be selected to suit the purification equipment of high humidity dusty waste flue gas.
6.6 Storage unit
6.6.1 Chromium slag shall be established with storage facilities, and the storage facilities shall comply with the relevant provisions of HJ/T 301-2007. Chromium slag storage place and temporary storage
The site shall be windproof, rainproof, floodproof and seepage proof. The discharge of pollutants shall comply with the relevant provisions of GB 18597.
6.6.2 The detoxification chromium residue storage shall comply with the relevant provisions of GB 18599.
6.6.3 Unqualified detoxification chromium slag shall be stored separately in accordance with the requirements of Chapter 9 of HJ/T 301-2007 "Technical Specifications for Environmental Protection of Chromium Slag Pollution Control"
Store or transfer to a chromium residue storage location.
7 Detection and process control
7.1 Parameter monitoring and control facilities that adequately reflect the operational status of the production line should be provided.
7.1.1 Raw material preparation unit, feeding unit, reduction calcining unit and cooling unit shall be set up for production control and operation management.
The instrument shall be able to display the operating conditions in real time online, including the kiln wall temperature, the discharge temperature, the exhaust gas temperature, the kiln air volume and the wind pressure,
Parameters such as cooling water volume to keep abreast of the operating conditions of the kiln and other units.
7.1.2 The measurement, control and accumulation of fuel consumption, power consumption and raw material consumption of production lines should be set from the level of energy utilization.
Statistical facilities.
7.2 Testing should cover all aspects of secondary pollution during the disposal of chromium slag.
7.2.1 The detection of facility exhaust gas shall be carried out in accordance with the relevant provisions of Appendix D of HJ/T 301-2007 “Technical Specifications for Environmental Protection of Chromium Slag Pollution Control”
Row.
7.2.2 Determination of chromium content in chromium slag treatment sites According to HJ/T 301-2007 Appendix C of the Technical Specifications for Environmental Protection of Chromium Slag Pollution Control
Relevant regulations are implemented.
7.2.3 The detection of detoxified chromium slag shall be carried out in accordance with the relevant provisions of HJ/T 301-2007 “Technical Specifications for Environmental Protection of Chromium Slag Pollution Control” 13.1.
8 auxiliary engineering
8.1 Electrical system electrical load and backup power supply, high voltage power distribution equipment, relay protection and safety automatic devices, overvoltage protection and
The grounding design should comply with the relevant national and industrial standards.
8.2 Water supply, drainage and fire protection
8.2.1 Water supply design should comply with the relevant provisions of national standards. The production water should be in the form of centralized water supply. Equipment cooling water should be adopted
Ring water supply method, and in line with the relevant provisions of national standards. Domestic water, fire water, and emergency water should be combined water supply.
8.2.2 The drainage design shall comply with the relevant provisions of the national standards. Production wastewater and domestic sewage should be prioritized for detoxification after treatment
Cooling of the slag. The total chromium content in the wastewater shall be in accordance with the relevant provisions of HJ/T 301, and other pollutants in the wastewater shall be discharged in accordance with GB 8978.
Relevant regulations.
8.2.3 Fire protection design shall comply with the relevant provisions of national standards. An indoor fire hydrant water supply system shall be provided in the plant. Safety in the factory
The dispersion shall comply with the relevant provisions of the national standards. The interior decoration design of the factory building shall comply with the relevant provisions of the national standards.
8.3 Heating, ventilation and air conditioning
8.3.1 The design of heating, ventilation and air conditioning should comply with the relevant provisions of national standards and industry standards.
8.3.2 Ventilation at the workplace should comply with the relevant provisions of national standards and industry standards.
8.4 Building and structure
8.4.1 The working place should adopt non-slip and anti-seepage ground to avoid the pollution caused by the scattering of chromium slag. It should meet the national standards and industry standards.
Customs regulations.
8.4.2 In the workplace with high noise such as crushing, drying, reduction and calcination, the building structure should adopt a high sound insulation capacity enclosure structure.
Ensure that the noise at the boundary of the plant complies with the relevant provisions of the national standards.
9 Labor safety and occupational health
9.1 Chromium slag dry detoxification treatment and disposal construction shall strictly implement the relevant provisions of the current national laws, regulations, standards and norms.
9.2 Dust-removing measures shall be taken for the production equipment that produces dust. Dust-covers and dust-collecting equipment shall be provided at the dust-collecting points to maintain negative pressure and dust removal.
The evolved gas should be organized.
9.3 In workplaces containing hexavalent chromium dust, such as rotary kiln and chromium slag, operators must wear protective clothing and gas masks. Entering
CO testing should be performed before furnace maintenance.
9.4 The job site should have detailed rules and regulations to prevent the occurrence of dangerous accidents.
9.5 All toxic and hazardous gases in the workplace should be tested regularly. The job site should be kept ventilated and fireproof, explosion-proof, and anti-collapse.
Set the water supply point at the production site to facilitate cleaning of eyes, skin, etc.
9.6 Use equipment with low noise. For equipment with high noise, noise reduction and sound insulation should be used to make the noise meet the national standard.
Quasi-regulation.
9.7 All personnel engaged in production operations should have regular medical examinations and establish a health record card. Occupational health education should be carried out regularly for employees, plus
Strong sense of prevention.
10 Construction and environmental protection acceptance
10.1 The chromium slag dry detoxification treatment and disposal project shall be carried out in accordance with the provisions of the approved design documents. Construction and installation work should be
Relevant provisions on construction design documents and equipment technical documents.
10.2 Project quality supervision and management shall comply with the relevant provisions of GB/T 50326.
10.3 Completion acceptance shall be in accordance with the Measures for Completion and Acceptance of Construction Projects (Engineering) and the Measures for the Administration of Environmental Protection Acceptance for Completion of Construction Projects.
Relevant regulations are implemented.
10.4 The completion acceptance of the project shall be carried out in accordance with the current engineering acceptance specifications of the relevant profession and the relevant provisions of this technical specification.
11 Operation Management
11.1 Operation, maintenance and safety management of the dry detoxification treatment and disposal project of chromium slag shall comply with the current national standards in addition to the implementation of this standard.
Relevant regulations.
11.2 The st...
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of HJ 2017-2012_English be delivered?Answer: Upon your order, we will start to translate HJ 2017-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of HJ 2017-2012_English with my colleagues?Answer: Yes. The purchased PDF of HJ 2017-2012_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|