automatic china grate coal fired steam boiler

automatic china grate coal fired steam boiler

Main contents of boiler energy efficiency test:

1. Boiler thermal efficiency test: a) determination of boiler evaporation; b) boiler excess air coefficient detection; c) exhaust smoke temperature detection; d) fuel combustion efficiency test; e) boiler thermal efficiency test; f) fuel consumption; g) Steam to coal ratio.

2. Boiler new product stereotyped energy efficiency test: Determine whether the boiler thermal performance indicators are consistent with the design and determine the operation mode of the equipment. Such as boiler evaporation, boiler thermal efficiency, combustion efficiency, various heat losses and so on.

3. Boiler operation adjustment test: Determine the most economical operation mode of the boiler and identify defects in the boiler operation. Such as boiler maximum load, boiler minimum load, fuel requirements, economic load, reasonable exhaust gas temperature, optimum wind coal ratio, excess air ratio, secondary air ratio and so on.

4. Comparative test of thermal performance before and after boiler reform: changes in evaporation, effects of combustion, thermal efficiency of boilers, etc.

5, fuel industry analysis, elemental analysis: to judge the quality of oil, gas and other fuels, easy for enterprises to control the quality of fuel into the plant.

6, water quality testing, scale analysis: determine the quality of water, control the boiler water indicators to prevent boiler fouling.

Run chemical plant boiler problems that may arise is what chemical plant boiler operation possible problem is? There are two main chemical plant boiler evaporation: evaporation and rated maximum continuous evaporation. When the chemical plant boiler load is higher than the maximum continuous evaporation, it indicates the operating force or overload. The following problems may occur super-load operation: Main results are as follows: (1) due to increased fuel consumption, furnace volume heat load increases, the furnace temperature and furnace flue gas outlet temperature, resulting in the superheater and reheater the superheated steam temperature and wall temperature, and must therefore be strictly monitored and adjusted. Try not to let this time overheating. Coal furnace, furnace volume due to the increased thermal load, increasing the likelihood of slagging. (2) the flow rate of chemical evaporation apparatus system working fluid increases, the flow resistance is increased, it is not conducive to water circulation. Therefore, we should pay particular attention to the monitoring of the water cycle bad area. (3) the pressure differential between the drum and the superheater outlet flow increases as the working fluid and superheater flow resistance increases, so that the pressure of the steam drum and headers increases, the strength of these components must be considered . Space volume load (4) the steam drum, the load increases the evaporation surface, saturated with water vapor would increase, thus affecting the quality of steam. (5) chemical plant boiler safety valve Total displacement designed according to a maximum continuous evaporation. If the chemical plant boiler overload, once the sudden load shedding, the safety valve will not fully open, the steam pressure can not be reduced quickly. At this point, it is necessary to ensure the safety of the boiler by chemical vapor released into the air exhaust valve. (6) With the increase of the amount of air required for combustion and the amount of smoke produced, once sufficient air supply, the air volume is insufficient, the chemical conditions affecting the combustion boiler, increasing the likelihood of slagging; In addition, since the flue gas velocity the increase in fly ash increased the degree of wear of the heating surface. (7) during operation, the exhaust gas temperature rises, the exhaust gas heat loss; shorter residence time in the furnace the fuel, incomplete combustion heat loss of mechanical and chemical incomplete combustion to increase the heat loss, reduce the thermal efficiency of the chemical plant boilers. In summary, the excess chemical plant boiler operation have an adverse impact on the security and economic, should generally not excessive run. If the special emergency must also be strictly limited scope and excess power beyond the time required to force.

Gas-fired automatic china grate coal fired steam boiler applications include gas steam boiler steam boiler and hot water boiler two categories, under the policy from coal to gas, the use of gas steam boiler is also increasingly widespread up. Regional gas boiler is also engaged in the implementation of replacement or renovation project. Then come to you simply steam boiler applications have what? Steam boiler applications can be roughly divided into three categories, residential, commercial and industrial, civil and generally refers to the domestic gas boiler our lives with so-called boiler, primarily for home heating and bath with hot water , which is characterized by simple structure, convenient operation, long life, is the choice of most families choose; commercial, then generally refers to the star hotel, hospital school district heating mechanism, the general will choose to steam bath or gas boiler boiler for hot water supply of the main ways. Required in this area to select a gas boiler, characterized in that the gas or gas compared in terms of biomass fuel, no dust combustion, emissions in the flue gas can also control the amount of nitrogen emissions. Gas-fired steam boiler combustion more fully in value, mostly in the commercial is also a good choice; the last is the industrial furnace, industrial furnace is characteristic of large tonnage, high fuel demand, in general, the company received the heat a gas pipeline to gas as fuel, then the biggest advantage is that no storage, reducing transportation and storage costs of fuel, generally used for thermal power generation or industrial heating and heating company needs large industrial enterprises. These are the three main areas of use on gas-fired boiler to introduce today, hoping to help you have a better understanding of steam or hot water boiler, also hope that we can continue to focus on.

Since the beginning of 2017, Qingdao City, Shandong Province to carry out the transformation of governance coal-fired boiler, as of today, has a total payment of coal-fired boiler exhaust gas treatment and transformation subsidies of 240 million yuan in 2014 to 2016 for the sum of the total grant funds, the city this year We will continue to invest 350 million yuan for the renovation subsidy ultra-low emission coal-fired boilers.

Statistics show that January-October 2017, Qingdao City, "blue sky, starry" increased by 16 days the number of days year on year, totaling 289 days, accounting for more than 95% of the total number of days throughout the year, fine particulate matter (PM2.5), respirable The average concentration of particulate matter (PM10) reached 35 micrograms / cubic meter, 70 micrograms / cubic meter, an improvement of 16.7%, 14.6%, the highest in the province for the past five years, the highest level in the same period, the air quality in the first half to get the provincial government incentive funds 16.77 million yuan.

2014-2016, municipal finance coal-fired boilers and efficient treatment and transformation project grants 230 million yuan, began to be 100,000 yuan subsidy per ton of steam coal-fired boiler exhaust governance 2016 (Note: in 2016 began to carry out boiler subsidies, continues to the present is still the case).

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