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January first, Henan Province issued "the transformation of traditional coal chemical industry development action plan" (the "Program"), to promote the province's pollution prevention campaign of three-year action plan to speed up the traditional coal chemical industry (ammonia, methanol) industry to green transformation, to achieve high-quality development.

First, strictly control new capacity

Adherence to the red line capacity, traditional coal chemical enterprises prohibit new construction, new capacity expansion projects alone, is strictly prohibited without permission around the building does not meet the requirements of the industrial layout plan of coal chemical project in principle. The province's coal chemical projects and intensive clean-up, but according to the specified time limit has been approved to start construction of the project in principle, to construction, relocation and renovation projects must be upgraded into the base or campus planning. By 2020, the chemical industry out of the fixed bed coal gasifier intermittent exit single set of devices 300,000 tons / year of synthetic ammonia production capacity. Strict safety, fire safety, environmental protection, energy saving, water administrative licensing, implementation of the project safety, environmental protection facilities "three simultaneous" (designed, constructed and put into use) system, and resolutely shut down energy consumption, environmental protection, safety, quality, technical non-compliance enterprise. Strict implementation of the regional total energy consumption, pollutant emissions control requirements, upgrading of coal coal project be implemented reduction or equivalent alternative.

Second, increase the relocation and reconstruction efforts

Further promote the densely populated towns of dangerous chemicals production enterprises and urban built-up areas heavily polluting industrial relocation of enterprises, the implementation of an intensive investigation, the establishment of management accounting, according to "a business a policy" during mode classification advance. Priority to promoting the urban area of ​​coal chemical industry relocation, conversion or quit, not in the urban area but not in the business park to gradually move the park, according to the specified execution be discontinued or phased out. Close to exit the business enterprise to achieve the "two off three clear" (cut industrial water, electricity, removal of raw materials, products, production equipment), select the transformation of the enterprise to implement the upgrading of the standard industry benchmark, to off-site relocation According to large-scale, modern principles move into the province for involving chemical industry gathering area. Relocation upgrading of enterprises, projects and equipment should be encouraged to reach equipment industry access standards and conditions specified in the Guiding Catalog of Industrial Structure Adjustment, the use of large-scale continuous pressurized gasification plant, ammonia production capacity to 300,000 tons / year and above, coal methanol production capacity reached 100 million tons / year and above, the main push large-scale equipment.

Third, the implementation of green transformation

Before the end of 2019, coal chemical enterprises fully completed VOCs governance. And comprehensively promote the chemical industry equipment static and dynamic sealing points, storage, handling, waste water systems, unorganized process emissions and non-normal operating conditions and other root causes of remediation. As requested, the timely completion of the coal chemical industry waste discharge permit issued by the work, companies must comply with the behavior of the sewage discharge permit clear conditions, various types of environmental inspection found violations, strictly and severely investigated and dealt with as soon as possible in place. Based on "clean production audit approach", the implementation of coal chemical enterprises compulsory clean production audit coverage. Required to implement risk control measures to close the relocation of enterprises left over land.

1. The advantages of chain grate boiler

The operation of the boiler has been mechanized, which has reduced the labor intensity of the furnace workers. Most of the chain grate is a quick-loading furnace, which is convenient to install and move, and can save a lot of capital investment. Moreover, the boiler has less rotating equipment and simple fuel preparation.

Boiler explosion and industrial hazards: industrial boiler explosion causes and hazards? For chemical plant before use, it must be to raise awareness of prevention. So as to avoid unnecessary losses to yourself. During boiler operation, the pressure exceeds a predetermined pressure to certain parts of elements, the thin portion will suddenly break, crack out immediately stored in the pot will be full of steam. In an instant, a pressure drop equal to pot the external atmosphere. At this time, since the momentum intense, so that part of violent boiling pot filled with water, the expansion, a small part of the whole pot steam also will be warmed, a pressure rises again, further expansion gap. Because full of water and steam in the rapid expansion of one-tenth to twenty second, when gunpowder exploded just as the rapid expansion of the gas, they become a powerful shock wave, with great destructive power.

Calculating the heating area of ​​the boiler also requires understanding the specific structure of the boiler.

According to the heat transfer mode, the heating surface of the boiler can be divided into a convection heat receiving surface, a radiation heating surface, and a semi-radiation heating surface. Convective heating surfaces include boiler tube bundles, economizers, superheaters, reheaters, air preheaters, and the like. The radiation heating surface includes a furnace, a water wall, and a half-radiation heating surface is a screen type superheater.

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