Electric hot selling steam boiler 20t cyprus heating process: Since the water temperature in the steam boiler power rising bubbles and an evaporator heating surface of the metal wall temperature began to rise at any time, need to pay attention to thermal expansion and the temperature of thermal stress due to thicker wall thickness of the bubbles the main problem in the electric steam boiler is heated during thermal stress. At the same time, but also consider the overall thermal expansion problems, especially for the electric heating surface of the steam boiler tubes, because the wall thickness, length of problems in the heating process is thermally integrated for expansion, but also noted that the thermal stress and prevent because of the neglect caused the failure. Generating steam in electric steam boiler and boost heating process, the temperature difference between the bubble there is a temperature difference along the thickness of the vertical wall and, when the temperature is higher than the outer wall temperature of the inner wall, the upper wall surface temperature is above the lower case, to prevent excessive thermal stress to the boiler slow step.
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.
Boiler heat boiler thermodynamic inequality unevenness is generated in the same group of heating surface, the phenomenon of uneven heat load. Thermal variation caused by the structural characteristics of both, can also be caused by operating conditions. The uneven distribution of the phenomenon of uneven speed and smoke along the width of the smoke flue temperature; serpentine planar heating surface unevenness caused by uneven pitch fumes or corridor; heating surface fouling, slagging furnace flame deflection center; run to adjust the flame so bad skewed, down, raise, etc., will cause uneven heat. (L) reaches a rated steam parameters and ensure stable operation. (2) to ensure stable ignition, combustion central appropriate, uniform distribution of the flame, the device does not burn, to avoid fouling and coke. (3) the boiler and crew safe operation under the most economical conditions.
Wherein the gas boiler WNS WNS boiler which is horizontal, tee, wet-back fire tube boiler after wet the boiler space of the water jacket means of flue gas behind the soaking furnace turned. Repair and maintenance of the rear of the boiler is very difficult. The main body of the boiler furnace, boiler and chimney housing components. Typically corrugated furnace, a pipe is threaded. Purpose is to increase the heating surface of the boiler, furnace efficiently absorb thermal expansion and contraction. Boiler to prevent cracks. WNS gas boiler features a large furnace, corrugated furnace technology using the advanced design of large-scale furnace technology, in the original traditional design, expanded the hearth diameter, increasing the radiation heat transfer area, the heat transfer to the main boiler radiation heat transfer, not only reduces the heat transfer. Second and third line load, but the fuel combustion, reducing harmful gases. Meanwhile, the ripple tank furnace technology in the high temperature zone of the furnace, not only increases the radiation heat transfer area, and has a blocking effect on the movement of smoke, the heat radiation effect is more obvious. Corrugated furnace can only improve the overall strength of the furnace, and can automatically compensate for thermal expansion stress of the furnace, to avoid defects such as weld cracking due to thermal stress. 2, a high heat strengthened threaded tube designed and optimized heat transfer technology smoke velocity, thermal efficiency of the boiler and the decrease in the output of the extended run time, thereby realizing a compact structure, with 10% overload. 3, the climate compensation techniques demand heating (hot water boiler) technology has changed the conventional isothermal manner, i.e. according to the outdoor temperature changes and user demand for heat, the efficiency of the heat source temperature of the boiler water automatically optimized. And the thermal energy required for heating the heat boiler provided the user is balanced, that is, high outdoor ambient temperature, boiler water temperature down automatically, low outdoor ambient temperature, boiler water temperature is automatically raised.
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