bagasse fired boiler

Henan Provincial Government to respond positively to meeting the spirit of the "Blue Sky Battle Action Plan", in mid-September, the issuance of "three-year action plan for pollution prevention and control campaign of Henan Province (2018-2020 years)" ( "Program"), under provincial jurisdiction, provincial tube county (city) people's government and provincial government departments need to be strictly enforced.

A gradual reduction of the total coal consumption

1, and strictly control the total coal consumption. Strictly implement the "People's Government of Henan Province, Henan Province, on the issuance of" Thirteen Five "total coal consumption control notification program of work." Strengthen the electricity, coal, steel, chemicals, nonferrous metals, building materials and other key industries of coal consumption reduction measures to eliminate a number of energy consumption is higher than the national average of inefficient capacity.

2, to enhance coal project access threshold. In principle ban on new or expanded production capacity of pure coal, coal, iron and steel, electrolytic aluminum, cement, glass, traditional coal chemical, coke overcapacity of traditional industries, the province's non-new chemical park.

3, an alternative embodiment of the coal reduction. Strictly implement the "coal project in Henan coal consumption of alternative management (Interim) Measures", all new construction, renovation, expansion project be implemented coal coal reduction or equivalent alternative. For failure to complete the annual coal consumption reduction objectives of local, regional limits approved implementation of coal projects. In addition to cogeneration projects, the province no longer approve new production of "Thirteen Five" period coal-fired power projects.

Second, build the province's clean heating system

1, the basic realization of full coverage of urban central heating. Based on existing resources and central heating facilities, the existing large-scale heat sources and central heating pipe network in the area, in-depth investigation heating demand, and promote the rich heating capacity extends to reasonable radius and root out the potential heating, heating reduce blind spots.

2, vigorously promote clean energy for heating. Central heating pipe network coverage area, the power supply and secure place, the implementation of clean energy heating engineering, accelerate the promotion of ground source, water and air source heat pump technology, building a number of distributed energy heating project; in the natural gas pipeline network to cover the area, on the premise of the implementation of gas supply contracts, ordered the construction of gas-fired boiler room, natural gas distributed energy projects.

3, strengthen clean coal quality control. Continued to organize provincial, city, county, township (neighborhood) and village (community) scattered five coal-burning governance special inspection operations, according to the law to crack down on sales of substandard clean coal behavior.

Third, the development of industrial coal-fired facilities Chaigai

By the year 2020, and out of the basic ban coal stove cogeneration heating pipe network coverage range fired heating, drying furnace (kiln); out hearth furnace diameter of 3 meters fuels gas generator, increase fertilizer industry fixed bed coal gasifier intermittent reform efforts; focus on the use of gas furnace industrial park, they will not have to switch to natural conditions, should build a unified clean coal gas central principle; prohibition blended with high-sulfur petroleum coke.

Fourth, to promote the comprehensive improvement of coal-fired boilers

Demolition and gradually expand the boiler clean energy transformation of coal-fired range. Before the end of 2020, the province basically eliminated 35 tons of steam / h and coal-fired boilers.

Boiler Chaigai funding awards complement the implementation of the way decreasing year by year:

The completion of the coal-fired boilers Chaigai before the end of October 2018, giving 60,000 yuan / tons of steam financial awards complement;

The completion of the coal-fired boilers Chaigai before the end of October 2019, giving 40,000 yuan / tons of steam financial awards complement;

The completion of the coal-fired boiler Chaigai after the end of October 2019, no longer give financial awards complement.

Fault which the bagasse fired boiler safety valve 1, a valve leak:, valves and valve seat sealing surface of the medium boiler safety valve leakage occurs exceeding the allowable level in normal working pressure, will continue to leak medium of the hard sealing material destruction. Therefore, the working medium is the steam valve, at a predetermined pressure, if the outlet end invisible to the naked eye, it can not find a leakage, the sealing performance is considered acceptable. 2, the valve body joint surface leakage: the upper and lower valve body at the binding surface leakage, leakage of the main reasons for this are the following aspects: a, the bolt tightening force bonding surface or tight enough bias, resulting in poor bonding surface sealing surface. b, in conjunction with the toothed surface of the valve gasket does not meet standards. c, the boiler safety valve in conjunction with the valve body surface flatness bad or hard cause seal failure impurities stayed pad. 3, the operation of the rear main valve impulse valve does not operate: this phenomenon is commonly referred to as tripping of the main valve. The main safety valve tripping seriously affect the safe operation of the equipment also could result in a major accident. 4, the rear main impulse valve back seat back seat valve delay time is too long: the main cause of such a failure has the following two aspects: on the one hand: a large amount of steam leakage chamber of the main valve piston or smaller, although the impulse valve back seat, but still in line with the pressure of the steam piston chamber is still high, pushing the piston downward force is still great, so causing the main valve back seat slow. Eliminate this failure, mainly through large open throttle valve opening and the orifice diameter is increased to be addressed, the throttle valve opening and the throttle aperture opening increases are big steam left in the pulse tube quickly drained , thereby reducing the pressure in the piston, so that acting on the piston downward thrust rapidly decreases, the spool valve effect of its own spring tension set up in the steam box with steam medium upward thrust rapidly back and under the main seat. On the other hand: Method friction between moving parts and fixed parts of the main valve is too large will cause the main valve back seat sluggish, it is to solve this problem with the gap of the main safety valve moving parts and fixed parts of control within the standard range. 5, low back seat pressure safety valve: safety valve reseating pressure is very low harm operation of the boiler, back seat pressure is too low will cause a lot of media time-out emissions, resulting in unnecessary energy loss. This failure occurred in the pulse valve springs A49H 200MW unit used to analyze the reason is mainly caused by the following factors: a, a large amount of steam drain valve spring pulses, this form of impulse after the valve is turned on, the media continue to discharge, pushing the main safety valve. B, the valve spool and the guide sleeve with the gap inappropriate, with the gap is too small, after a start impulse valve seat formed in this part of the instant high kinetic energy pressure throttle area, raise the spool, a delay seat back time, when the vessel to a lower pressure zone to reduce the kinetic energy of the pressure impulse valve seat back. A method to eliminate this failure: Check valve body and the guide sleeve dimensions of each portion, with the gap is too small, straight reduced valve flap valve sealing surface a vapor barrier or cap diameter increasing radial clearance between the valve flap and the guide sleeve, will not be increased excessively throttled flow area of ​​the portion of the steam flowing through, forming the partial pressure increases the kinetic energy of a high pressure zone. Another reason making: All moving parts friction force, some parts of a jam, the solution is to carefully check all moving parts, strictly in accordance with maintenance standards for maintenance of the various components, with each component of the gap adjustment to the standard range, eliminate jam possibilities. 6, the safety valve chatter: jitter safety valve appear in the discharge process, called safety valve chatter, chatter occurs easily cause metal fatigue, mechanical performance of the valve drop, causing serious equipment problems, the reason is quite vibration occurs mainly in the following aspects: one is the improper use of the valve, selection of valve discharge capacity is too large (relative to the emissions must be concerned), the method is to eliminate the valve should make the choice rated displacement required emissions equipment as close as possible. Partly because the inlet pipe diameter is too small, smaller than the diameter of the valve inlet, the inlet pipe, or too much resistance, a method to eliminate the valve is installed in the inlet valve tube inner diameter not less dry or reduced inlet diameter inlet conduit resistance. Discharge pipe resistance is too large, resulting in the discharge excessive back pressure valve is caused by a factor chatter, can be addressed by reducing the resistance of the discharge pipe. 7, the safety valve frequency jump: jump frequency refers to the valve back seat, until a slightly elevated pressure, turn relief valve to open, repeated several times occur, a phenomenon known safety valve "frequency hopping." When the mechanical properties required safety valve safety valve reaches a predetermined opening height in the whole course of action, not allowed jamming, tremor and frequency hopping phenomenon. Frequency hopping phenomenon occurs sealing valve is extremely unfavorable, easily causing leakage sealing surface. Analysis of the main reasons the valve back seat pressure is too high related to the back seat pressure is high, medium, low emissions excess of the vessel, the safety valve has a back seat, when the operating personnel to adjust properly, pressure inside the container will soon It rose, it also caused the safety valve, as the case may be eliminated by the method to open a large degree of throttle opening. After the throttle opening large, source to the main steam safety valve piston chamber decreases, a smaller push the piston downward movement of the force, the less likely the main safety valve, thus avoiding the main safety consecutive starts.

Severe water shortage in steam bagasse fired boilers, superheated steam temperature will rise Why? Severe water shortage in steam boilers, superheated steam temperature will rise Why? 2013-3-268: 02: 20 after severe steam boiler water, cooling water, boiler lost, and most of the heat of combustion is used to heat the superheated steam instead of water, the temperature of the steam will be increased significantly, and even the occurrence of the boiler the threat of explosion.

Gas-fired bagasse fired boilers and gas pipeline systems need not compared with conventional coal-fired boiler, gas-fired system no pipelines. The need to build gas-fired heat exchanger station. Volume, weight and footprint of the modular boiler power boiler smaller than the same. Allowing users to boiler room can be arranged in a very small space, avoid the crowded interior space of the building, saving boiler room investment. Natural gas boiler system is stable, easy maintenance and repair: The modular concept of equivalent natural gas boiler will be a large single boiler unit is divided into several small boilers. By simply the parallel combination of quantity, the amount of steam may be implemented in any single boiler size, because this design method determines the following characteristics: mutual backup for each gas boiler, and equipment investment efficiency, operating safety is greatly improved. Once a small boiler units unexpected failure, simply on the unit for repair, very convenient. Good capacity scalability. With changing living and residential heating thermal load (increase or decrease), the number of boilers can be increased or decreased at any time, in order to meet the heating needs of small investment. With a single large boiler different, difficult to adjust capacity. Compared with conventional gas-fired boilers, simple operation, easy management, after minimal training, staff can be proficient original boiler operation.