What are the environmental protection measures for steel mills?

Question 1: What environmental protection equipment are commonly used in steel plants? Bag filter, cyclone filter, spray tower, sludge filter, wastewater cyclone pool, electrostatic precipitator, sludge filter press, steel slag crusher, iron deposit tank, dryer, briquetting machine, etc.

Question 2: What are the environmental problems of iron and steel enterprises? Based on the theory of manufacturing cost and standard cost in cost accounting, this paper analyzes the present situation of product cost accounting in auxiliary departments of iron and steel enterprises, and establishes a matrix model of product cost accounting in auxiliary departments, which provides a basis for comprehensively and accurately accounting the manufacturing cost of iron and steel enterprises. Applying this model to the development of enterprise cost accounting system and the feasibility study of steel plant construction project has certain practical significance for perfecting cost accounting system and improving the accuracy and timeliness of cost accounting.

Question 3: What should steel mills pay attention to in order to safeguard their legitimate rights and interests in the face of environmental protection closure? The key is to have the formalities that approved you to build a steel mill that year. With these, you can apply for national capacity compensation, employee resettlement fees and low-interest loans for transformation. Without this, it is illegal production capacity, and many problems can only be solved through consultation.

Question 4: How to do a good job of environmental protection in iron and steel enterprises depends on which aspect you consider. For enterprises, environmental protection equipment should be turned on or off during inspection, and turned off during the day and night, so as to minimize operating costs without being found illegal. For the society, apply new environmental protection technologies, ensure the normal operation of environmental protection equipment, and carry out production in strict accordance with the standards required by the environmental protection law.

Question 5: What are the rationalization proposals for energy conservation and environmental protection in iron and steel enterprises? Iron and steel enterprises are enterprises with high energy consumption and high pollution, and there are the following suggestions for energy conservation and environmental protection:

A, blast furnace top gas residual pressure recovery power generation technology

The recovery technology of residual pressure of blast furnace top gas is a technology that uses residual pressure energy and heat energy in blast furnace top gas to do work through turbine expansion and drive the generator to generate electricity. TRT, a turbine device used, is an economical power generation equipment that uses the pressure of top gas to recover the secondary energy in the ironmaking production process, without fuel consumption and pollution. The top pressure of modern blast furnace is 0. 15 ~ 0.25 MPa, and there is a lot of potential energy in the top gas. TRT uses the residual pressure of the top gas to make the gas expand in the turbine to do work, push the turbine to rotate and drive the generator to generate electricity. TRT power generation can recover a lot of electricity without consuming any fuel. According to the different top pressure, each ton of iron can generate 20-40Kwh of electricity. If dry dust removal is carried out on blast furnace gas, the power generation can be increased by about 30%. Generally speaking, the bigger the furnace, the higher the top pressure and the shorter the payback period. This power generation method does not consume any fuel, nor does it produce environmental pollution, and the power generation cost is low. It is an important energy-saving project in the process of blast furnace smelting, and its economic benefits are very remarkable. This technology is very popular abroad, and it is gradually popularized in China.

Second, dry quenching technology

The dry quenching technology is relative to the wet quenching of hot red coke, which is called "dry quenching" for short. Recovering sensible heat of red hot coke and improving operating environment is an advanced technology, which is beneficial to improve coke quality, reduce energy consumption in coking process and improve atmospheric environmental quality. At present, CDQ technology is widely used abroad.

CDQ can recover 80% of the sensible heat of red coke, with an average recovery of 3.9Mp and 0.45-0.6 tons of steam at 450℃ per quenching. If the steam generated by CDQ is used to generate electricity, when the fully condensing unit is used, the average net power generation of each block of red coke quenching is 95- 1 10Kwh. Deduct the energy consumption of CDQ itself, including low-pressure steam, nitrogen, electricity, pure water, etc. Using CDQ can reduce coking energy consumption by about 40kgce/t coke on average.

Three, coal moisture control technology

Coal moisture control technology is the abbreviation of "coal moisture control technology", which is a coking coal pretreatment technology developed on the basis of dry coal coking technology to reduce, stabilize and control the moisture of converter coal by heating. Its core is that no matter how much water the raw material is, the water content of the coal to be put into the furnace should be controlled within the range of 5% ~ 6%.

Four, coke oven gas hydrogen production technology

The utilization of gas resources can not only generate electricity in steel mills, but also be used with high added value. For example, producing hydrogen from coke oven gas can not only increase the added value of utilization, but also help reduce greenhouse gas emissions. Hydrogen production from coke oven gas is more economical than directly using expensive natural gas and coal, and it is an effective way to produce cheap hydrogen on a large scale with high efficiency and low cost. Hydrogen production by coke oven gas adsorption is an effective measure to develop circular economy and build an industrial chain of circular economy, which has remarkable social and economic benefits.

Question 6: What are the safety protection measures for electrostatic precipitation in iron and steel plants? Are there any safety measures? I don't think dust is dangerous. Just press a few switches every day. It's just heavy dust. Pay attention to wearing a helmet and mask. Then go to work and sleep, and be careful of being fined.

Question 7: How does the environmental protection of the steel industry affect many cities this year? Due to the continuous heavy pollution weather, steel mills are the main source of pollutants in these cities, so the environmental protection pressure of steel mills is even more severe this year. Daily monitoring data networking, environmental protection facilities operation monitoring, bad weather control operation, relocation of urban steel mills and other measures followed, overwhelmed, China steel industry and environmental protection industry really want to be harmonious.

Question 8: Learning contents of environmental protection personnel in steel mills 1. Environmental manager

1, fully responsible for the internal environmental protection management of the company;

2. Be responsible for the release of the company's environmental protection system and documents;

3. Be responsible for the examination and approval of the company's environmental protection equipment procurement contract;

4. Be responsible for the examination and approval of the company's environmental protection process improvement plan;

Second, the environment manager (external management)

1, responsible for reviewing the company's environmental protection system and environmental protection internal documents and submitting them to the chairman;

2. Responsible for working contact with environmental protection functional departments at all levels;

3, responsible for reviewing all kinds of statements about environmental protection and other relevant information;

4, the environmental protection department is responsible for

Third, environmental managers (internal management)

1, fully responsible for the daily management of the company's sewage treatment station, in strict accordance with the emission standards (items) issued by the Environmental Protection Bureau;

2. Be fully responsible for the company's "three wastes" treatment, and discharge up to the standard according to the indicators issued by the Environmental Protection Bureau;

3, fully responsible for the procurement plan of sewage treatment facilities and equipment, and the preliminary review of the contract text;

4. Be responsible for the technical management of the industrial wastewater treatment workshop, solve technical problems in the operation process, and be responsible for the technical transformation project of the industrial wastewater treatment workshop;

5. Responsible for the discharge and treatment of waste residue and waste gas, and provide technical services.

6, wastewater/waste gas treatment process design, engineering site equipment installation, process debugging;

Fourth, environmental managers (external)

1, responsible for assisting external environmental protection work and filling in various external reports required for environmental protection.

2, responsible for the supervision and inspection of the operation of the sewage treatment station, to do not conform to the provisions of the phenomenon and behavior to be corrected in a timely manner;

3. Be responsible for the management of the company's environmental protection files;

4, responsible for the preparation of environmental protection system;

Verb (abbreviation of verb) environmental protection management

1, responsible for the daily patrol inspection of waste gas, waste oil, waste gas and sewage treatment stations in the jurisdiction to ensure their normal operation;

2. Responsible for the external coordination, internal management and deployment of water, electricity and gas in the production area, office area and living area of the whole company;

3. Discover and eliminate potential safety hazards, and prevent and reduce the occurrence of safety accidents.

4, put forward rectification opinions on environmental hazards, and be responsible for the implementation of the rectification.

5, responsible for the company's sewage equipment debugging;

6, responsible for the preparation of the department management documents;

7, responsible for the work arrangement of sewage treatment station staff within the jurisdiction;

Workshop management of intransitive verbs

1. 1 Smoke Control Group

(1) is responsible for the operation and maintenance of dust removal equipment and the recording and management of daily work.

(2) Be responsible for monitoring the normal operation of each shift of equipment, and dosing the flue gas control equipment according to the standard to ensure the discharge standard.

(3) All up-to-standard dust enters the equipment for treatment, including dust removal, to ensure that it does not come loose.

1.2 noise control group

(1) Strictly control the occurrence of serious noise, control equipment with serious noise and increase prevention and control equipment.

(2) For the workshop with noise, monitor whether the sound insulation wall is sealed and there shall be no noise outside.

1.3 Sewage Treatment Team

(1) Be responsible for the sewage treatment of the company and be familiar with the process flow of the station;

(2) Responsible for environmental cleaning within the sewage treatment station;

(3) Responsible for the management of received hazardous chemicals;

(4) Report to the office and relevant departments in time when problems are found.

(5) Sewage treatment workers must measure the PH value of incoming sewage every day and every shift, and process the measurement results according to the dosing ratio to ensure the water quality reaches the standard.

6) Sewage treatment workers must make statistics on sewage treatment capacity, dosing and solid waste, including records.

7) Inspection and control of dosing measurement by sewage treatment workers in each shift every day and hour.

8) Sewage treatment workers must check the operation of treatment equipment every shift every day, and the equipment can't run in spite of illness. Operating equipment should be used for one purpose and one for standby. When the running equipment fails, it must stop running and start the standby equipment. If the standby equipment cannot operate normally, the competent department shall immediately report the stop time and recovery time, and the competent department shall report to the competent department of environmental protection.

9) Sewage disposal workers must dispose of solid waste in each shift every day, and the treated solid waste must be piled up in the designated position and marked.

1.4 solid waste treatment group

(1) The solid waste treatment personnel must treat all the sludge in the sludge pool every day, and the sludge will be treated by the frame filter press.

(2) The treated sludge shall be packed and placed in the hazardous waste placement area, marked and recycled by qualified units.

(3) solid waste management personnel shall not discharge solid waste without permission.

(4) The solid waste management personnel collect waste oil from the waste oil recovery tank in each shift, put it into the waste oil collection barrel and place it in the designated solid waste area ... >>

Question 9: Ask for the environmental protection system of steel mills! How to increase production without increasing pollution and ensure the effective days of air quality above Grade 1 throughout the year is a problem that chemical plants are trying to solve this year. Recently, the factory has taken effective measures to improve the atmospheric environment from the aspects of environmental protection system management, environmental protection facilities operation and environmental protection engineering construction.

At the beginning of the year, the chemical plant issued the Regulations on Environmental Protection Management, which clearly defined the environmental responsibilities of personnel at all levels, the reporting procedures of pollution accidents, the comprehensive treatment of three wastes, the management of civilized factory areas, environmental monitoring and index control, and effectively achieved "whoever pollutes is responsible and whoever pollutes is treated", effectively mobilizing the enthusiasm of all employees to attach importance to environmental protection, participate in environmental protection and rectify environmental protection. In terms of the operation of environmental protection facilities, each system should do a good job of equipment filing, dismantle or stop using equipment with unqualified environmental protection indicators, stop the operation of environmental protection facilities that have been put into operation in a planned way, and carry out regular maintenance to ensure that all kinds of tail gas meet the standards. In the process of project construction, the factory strictly implements the "three simultaneities" system, based on the transformation and upgrading of the old system and the construction and commissioning of the new project, refines and decomposes the environmental protection indicators, and strives to achieve economic, social and environmental benefits. Since last year, the plant has successively completed the "trinity" transformation of the tower-tank-vessel of the sulfuric acid dry absorption system, the transformation of the sulfuric acid anode protection heat exchanger and the dry absorption process, and the transformation of the sodium sulfite evaporation process, so that the sulfur dioxide flue gas is absorbed more fully and the tail gas emission is greatly reduced. At present, a new 530,000-ton sulfuric acid system under construction has adopted a number of new technologies and equipment with independent intellectual property rights. After the project is completed and put into production, it will realize stable, efficient and automatic continuous production, creating an environmental protection "bright spot" in the history of sulfuric acid production of the company. In addition, the chemical plant actively cooperates with universities to study the treatment of low-concentration sulfur dioxide, and another 700,000-ton sulfuric acid system has also begun to be designed. By then, the smelting flue gas will be fundamentally treated.

Question 10: What energy-saving measures and equipment do steel mills have? At present, converter steelmaking is negative energy steelmaking, and the main consumption places are electricity and water (except the daily indexes of converter steelmaking). If saving electricity, consider the performance of the driving device, such as switching to variable frequency motor; Save water, waste water is zero, and there are many valuable things in the waste, which should be comprehensively utilized.