ventilation methods of gas fired steam boiler

35 tph SZS gas-fired water tube boiler project for dairy industryPlenty of steam is needed in the milk powder production process of sterilizing, concentrating and drying; therefore, a stable ventilation methods of fired steam boiler has a direct impact on the milk production quality. Heilongjiang Feihe Dairy Industry Co., LTD., established in 1962, has won the Gold Award of Monde Selection. As hazy weather appears frequently in recent years, air quality issues have aroused great concern of the whole society. The Chinese government has successively launched "coal to gas" and other environmental policies to improve the air environment. Feihe Dairy is taking an active part in environmental protection, the company decided to replace the present 2 sets of 35 tph coal-fired steam boilers and one set of 20 tph coal-fired boiler with 3 sets of 35 tph gas-fired steam boilers. Considering that the steam boiler is a core equipment of the production line, the company had attached great importance to this purchase and held an open tender. ZOZEN successfully won the bid with excellent product quality and service, and provided the company with 3 sets of SZS series gas-fired steam boilers. This series of boiler adopts the design of membrane water wall; the gastight test must be done before installing thermal insulation layers, to ensure there is no flue gas leak under the condition of micro-positive pressure combustion and help reduce the heat loss of the boiler body. In addition, to effectively reduce the NOx emission, the boilers are equipped with large volume furnaces and advanced low NOx burners imported from Europe.

At 15:31 on January afternoon 55 points, Zhangjiakou Municipal Publicity Department announced through the official micro-Bo: Zhangjiakou Shiqiao Eastern red floor Combibloc bath center for illegal use of obsolete coal-fired boilers, boiler and furnace door ring gall bladder junction cracking, resulting in rapid ejection soda.

At present, the accident has killed two people were killed and two injured, the injured have been rushed to hospital.

Since the accident the suspect, the suspect has been controlled.

It was a painful stricken by the accident, the suspect illegal use of coal-fired boilers have been eliminated, resulting in four families forever pain.

As can be seen from the government over the country began to strictly limit the use of coal-fired boilers, coal-fired boilers in order to face a fate or modification or elimination of the unlawful use of coal-fired boilers have been eliminated but can cause great harm, the accident is a obvious example.

Therefore, actively cooperate with the investigation of the relevant units of boilers, boiler out of strict compliance with the Code and running, grasp the safe operation of the boiler to a large extent, reduce the occurrence of such tragic accidents.

The main functional difference component of natural gas and ventilation methods of fired steam boiler 1. The raw materials of the boiler combustion products of coal are carbon, hydrogen, oxygen, nitrogen, sulfur and water. Gas-fired steam boiler burner underlying mode, two-pass configuration, the fuel combustion, the boiler operation is stable and take up less space, while the spoiler is inserted smoke tube, smoke slow speed, increase heat transfer, a high thermal efficiency, reducing user fee gas hot water boiler with environmental protection, energy conservation, safety, salient features fully automatic operation, and ease of use. in addition, due to the operation of the economy, government policies to encourage, gas hot water boiler more and more people of all ages. Function gas boiler the ignition system that ignites the mixture of air and fuel, its main components are: the ignition transformer, the ignition electrode, a high voltage electrical cable fire. A more secure electronic ignition system called ignition pulse, is widely used Zhuoyi energy saving gas boiler manufacturers. Which facilitate saving, can simply press a finger, and safe, does not occur due to unexpected accidents occur flame, once the stall state occurs, the control system can close the solenoid valve, off the gas passage. After combustion, sulfur dioxide, sulfur trioxide and nitrogen oxides are discharged to the atmosphere, environmental pollution, cause harm to humans. The main component of natural gas is CH4, CO2 and H2O mainly produce post-combustion, compared with coal-fired boiler, gas boiler emissions of more environmentally friendly and better able to reduce urban air pollution problems. 2. The most common combustion coal-fired boilers are stratified combustion. This process mainly refers to coal fuel disposed in a larger work surface to complete combustion. Passage means to the coal bunker broken belt, ran into the furnace through the coal feeder, coal use wind; primary embodiment using a gas boiler furnace combustion gas into the main combustion chamber, combustion is completed in the form of flare. Wherein the main advantage of the stream bed combustion mode is reliable and stable, good economy; coal corresponding disadvantage is the need, not flexible. At the same time, the combustion mode is the stratified combustion "firing-sided" and "staged combustion", which is in Rongyifasheng bunker coal bunker bridges. Combustion chamber combustion with high efficiency, clean environment, burning the advantages of automation. At the same time, such a small area of ​​combustion, combustion does not need to be transported, and the combustion gas free of impurities, which boiler life relatively long. Gas boiler can withstand a high thermal load, it is possible to select a smaller furnace space. 3. coal-fired boiler safety relatively safe, small furnace combustion hazard. To be clear Anquancuoshi gas boiler, Rongyifasheng explosion within the explosion limits. The main use of coal-fired boiler stratified combustion, therefore, the need for timely when coal-fired boiler shutdown, even if you stop coal, there is still a lot of fuel in the furnace is not, can continue to burn. Accordingly, the gas pressure rising in the furnace, endanger the safety of the vessel. The main gas-fired boiler using natural gas fuel. When the boiler needs to be stopped in time to run, you can understand, stop the transmission, security is guaranteed. Further, no storage device can effectively reduce transportation costs, space costs. But the most important thing is explosive natural gas to reach the explosive limit, once the fire may occur, endangering the lives and safety of the explosion, while coal-fired boilers do not need to take this into account. 4. vented combustion coal-fired boiler with the blower is run together. Coal is a coal-fired boiler with solid fuel. The particle size of coal and coal combustion own characteristics resulting in a large excess of gas in the furnace during combustion of coal-fired boilers. Further, in addition to leakage of the combustion chamber flue, the coefficient of excess gas can reach 2.0 to 2.4. The main ventilation gas boiler is a slight positive pressure ventilation structure having an internal combustion, the combustion products in combustion operation is mainly discharged from the blower. Boiler primary combustion gas may be a hydrocarbon such as methane gas mixed with air, in which operation of the ventilation exhaust port air ratio only 1.2≤1.3 ~ 1.05, the amount of smoke produced by the boiler is very small, the gas less impurities, while the flue gas emissions are also easier to meet the requirements of national combustion equipment, slag and other dust without increasing the equipment. Gas boiler can not only reduce environmental pollution, and the relatively small investment in equipment, boilers longer life expectancy.

Thermal efficiency of coal-fired boilers and boiler standard reference card Is there a difference: in the specific types of boiler, the following will explain to, this kind of boiler coal-fired boiler, and its Web site or in the product, so it is very it is necessary to become familiar with and understand, so that, in order to have a comprehensive understanding of the product website, and also to broaden their knowledge and thus, in its study on the road forward. 1. oil-fired boilers and coal-fired boilers that heat the surface of the furnace, Is there a difference? Fuel oil and coal-fired boilers, which are two major types of boiler, the boiler is in this category, but they get hot surface of the furnace, there is a certain difference, is different, so the on this issue, that the answer is yes. In addition to an outer surface heating furnace, there are differences in other aspects. 2. coal-fired boiler, if it is less than 1 ton of steam, then, the thermal efficiency is how much is? Coal-fired boilers, if it is less than 1 ton of steam, then, the thermal efficiency of the boiler, within the range of 73% -79%, and want to obtain specific parameters, reference may be TSGG0002-2010 "energy saving technology Regulatory boiler regulations, "the standard to obtain accurate values. 3. General boiler certificate, if there is gas and coal-fired boilers of points? Coal-fired boilers, which are how many MW? General boiler certificate, there is no gas boilers and coal-fired boilers of points, so at this point, we should have a correct understanding, you can not go wrong. The MW coal-fired boilers, in general, is 0.35-7MW this range.

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