chinese coal fired hot water boiler

chinese coal fired hot water boiler

Introduce some common sense about the boiler 1, the critical speed of the circulating fluid bed boiler. Gas flow rate corresponding to the minimum fluidization velocity or become known as the critical fluidization velocity. 2, the flow characteristics of circulating bed boiler? A high combustion efficiency of the fuel adaptability 2 3 4 desulfurization efficiency is low nitrogen oxide emissions high combustion intensity 5, 6 simply small cross-sectional area of ​​the furnace fuel and coal pretreatment system 7, a large load adjustment range, adjustment is easy to implement fast ash 8 utilization. 3, the partition circulating fluid bed boiler furnace and the corresponding characteristics into dense and dilute phases, a lower dense phase zone of the furnace, filled with hot materials, is a stable source of hot, heat storage is a thermal store , flow therethrough in an upper dilute phase zone of the furnace, the fuel air are required. 4, the positive balance calculation boiler efficiency, combustion of coal, boiler heat losses What? Coal particles is heated and dried: volatile combustion and precipitation: coal particles swell and rupture: re-cracking and coke burning carbon particles and wear. Heat loss 1 2 3 Chemical incomplete combustion loss of physical mechanical incomplete combustion heat of the loss heat loss 4 5 ash. 5, the charging cycle 4 Effect Effect Effect amount of the main factors affecting combustion in the boiler of a coal particle size distribution and particle 2 was 3 Effect fluidization velocity excess air factor 5 bed temperature Dense Phase 6 . 6, the basic form of the heat transfer in? In the heat transfer process, there are three basic ways of heat transfer: thermal and heat transfer, convective heat and radiant heat transfer. 7, their role in recycling and recycling processes? By the economizer feed water into the steam drum, a descending pipe into the water wall, by absorbing the heat released by the combustion of the fuel heating the water in the saturated steam passes through the heat absorbing further heat saturated steam into dry steam heating. 8, sewage, drainage pipe What? Sewer: blowdown drum door (left and right) turn on the water accident door, front door header sewage, sewage tank after the door, left the door header sewage and right door header sewage, sewage water jacket door (about) Dipleg sewage door. Drainage pipe: the low temperature superheater inlet header hydrophobic doors, front / rear desuperheater hydrophobic door header, the high-temperature superheater inlet / outlet header, the header hydrophobic dispensing door. 9, then what are pipe drum? Meter and accessories? Superheater, economizer recirculation duct, platoon expansion tube, a condenser tube, soot blower tube, economizer inlet pipe, the discharge pipe accident, centralized downcomer platoon expansion, a water level gauge, a thermometer, security door, pressure gauge, gas-water separator, header. 10, the cyclone structure and working principle? Cylindrical body, the central cylinder, a cone, a loop seal, the material returning leg, from the high temperature flue gas out of the furnace, two left and right into the two cyclones, increase after turning flue flue gas velocity in the cylinder the center of rotation of the form cylinder back down into the cone upwardly from the central cylinder wall Shuaixiang excluded smoke particles under high effort when the cone reaches the end coupled with its heavy fall below the loop seal. 11, Refeeder role? The ash from the circulation loop seal into the furnace combustion chamber 12, acting characteristics superheater? The use of flue gas heated to a certain pressure saturated steam superheated steam. 13, bag filter works and composition? Principle: inlet flue gas-containing flue dust particles into the lower caul plate over the flue dust reduction chamber, and then through the outlet to reduce the wind speed of the flue draft fan withdrawn via the discharge plenum chamber clean flue upper portion of the bag filter the atmospheric composition: inlet flue, the caul plate, the reduction of flue gas chamber, bag, net flue gas plenum chamber exit gas, ash silo, rotating ash blowing device, the air reservoir. 14, to the mounting position of the coal feeder, the number, composition mounted on the front wall of the furnace, the number of stage three consists of: a motor, a belt coal feeder, reducer, the motor slide. 15, the process of slag from the furnace down the three tap outlet derived by the discharge of slag, after water cooling to cool to a certain temperature onto the cooling belt-type transfusion Pa, and then transported by the inclined transport slag to the slag bin .

Steam boiler overpressure phenomenon and treatment of steam boilers refers to water heated to a certain temperature parameters and the production of industrial steam boiler, the water in the steam drum is heated to become vapor, fire emits heat in the furnace, it is the principle of the steam boiler. Steam boiler belongs to special equipment, design, processing, manufacturing, installation and use of the boiler must be supervised by technical supervision departments, users only get to use the boiler permits to use steam boilers. The fuel steam boiler (electricity, oil, gas) can be divided into an electrical steam boiler, steam boiler fuel, gas steam boiler three kinds; constructed according to the steam boiler can be divided into vertical, horizontal steam boiler, steam boiler mostly small and medium sized single , double the return of the vertical structure, large steam boilers and more horizontal structure of three return. Steam boilers and boiler overpressure phenomenon processing method, the phenomenon of over-pressure boiler steam pressure ⑴ sharp rise exceeds the allowable operating pressure, the safety valve pressure gauge pointer over the red line pressure is still elevated. When the interlock ⑵ overpressure protection device operation, overpressure alarm should be issued to stop the air blowing, the wind, coal. ⑶ steam temperature rises and steam flow. 2, boiler overpressure treatment ⑴ weakened rapidly burning, manually open the valve or bleed valve. ⑵ increase the water supply, while strengthening the lower drum sewage (you should pay attention to maintaining normal water level boilers), to reduce the boiler water temperature, thereby reducing the pressure drum boilers. ⑶ safety valve pressure gauge malfunction or all of the damage, emergency shutdown, safety valves and pressure gauges are to be repaired after the boost operation. When ⑷ endanger the safe operation of the boiler overpressure occurs, the buck should take measures, but too fast buck is strictly prohibited. The ⑸ serious boiler overpressure eliminate, to the shutdown of the boiler internal and external inspection, to eliminate the overpressure caused by deformation, leakage and other safety accessories and maintenance unqualified.

A few days ago, Datong City, Shanxi Province, issued a "decisive battle 300 days, to enhance the" Datong blue "plan", combined with ongoing Shanxi Province: innovation, work for "the great debate, promote green development, and constantly improve the level of ecological civilization, achieve a good number of days 300 days throughout the year for more than two goals. details are as follows.

1, aspects of the transition. On the basis of the regulation last year, continued to carry out "dirty scattered" enterprise rectification work. According to industrial policy, industrial layout planning, as well as land, environmental protection, quality, safety, energy consumption, etc., to carry out an intensive investigation, the establishment of management accounting. In accordance with the principle of "first stop after the rule", the implementation of classification disposal, have been banned "dirty messy" business, appears to prevent the resurgence of the phenomenon.

2, corporate governance aspects. Industrial pollution discharge standards to strengthen the comprehensive management of enterprises can not achieve full compliance, should be taken to stop production remediation. Full completion of key industries pollution remediation work, on the basis of the city's nine power companies that run on ultra-low emissions stable, GD Datong Power Generation Co. Ltd. within the scope of the built-up area of ​​the city and Datang International Yungang Thermal Power Co., Ltd. completed before the end of the colored Amidst the governance feasibility report, we lay the foundation for next year colored misty rain governance. December 30, 2019, to carry out ultra-low emissions and chemical industry, iron and steel, nonferrous metals, cement industry, especially emission limits transformation; completed 100 industrial enterprises fugitive emissions control, industrial furnace control 41 upgrades, 11 key industries and enterprises volatile organic compounds governance and four key industries and enterprises volatile organics management upgrade.

3, less coal ways. Insist on proceeding from reality, should be in accordance with the electric power, gas should the gas, should the coal coal (ultra low emission), should be hot is hot, and more heating energy policy to ensure the safety of the masses warm winter. Residents living coal simultaneous implementation of clean energy alternatives. District heating flat built-up area clean 100% coverage, coverage of other counties clean heating built-up area of ​​more than 70%, 40% or more in rural areas, to proceed with the phase-out of coal-fired boilers. Renovation project to carry out ultra-low emission coal-fired boilers, October 1, 2019, 65 tons of steam coal and above and build the region (biomass) and energy-efficient boilers to complete the transformation of ultra-low emissions, low nitrogen gas boiler basically completed the transformation.

Why supervisory inspection-free steam boiler steam boiler characteristics can exempt? According to the "Steam Boiler Safety Technology Supervisory Regulations" provides that the normal water level of boiler water volume less than 30L in the boiler does not belong to the scope of the surveillance. When the normal water level of boiler steam boiler water volume is only 27L, like installing a home water heater as safe. So steam boilers belong to exempt boilers. You can avoid the security of small steam boiler What are the benefits? 1, you can not build a separate boiler room, can be placed in the basement, roof and other places 2, do not have a full-time duty Boilermakers (conventional boiler requires certified fireman) 3, eliminating the need for a year dealing with government departments, burning more peace of mind coal steam boiler What are the advantages over conventional steam boiler? Coal-fired steam boiler, is lower than conventional coal-fired steam boiler safety running costs, fast start, no registration and annual inspection, firing five minutes produce steam. Coal-fired steam boilers suitable for use in what place? It can be used in hotels, factories, hospitals and other occasions. The hotel can be used as a steam boiler steam laundry places, canteens and other uses. As plant steam for a steam boiler may be used in the process. Steam boiler can be used as a hospital to disinfect hospital use. Free supervisory inspection characteristics steam boiler: The supervisory inspection-free steam boiler water volume is less than the normal water level 30L, within the exemption permits boiler use a range of countries that use the certificate without going through the boiler. Furnace is equipped with a built-in separator, to solve the problem with the water vapor, more to ensure the quality of design, high degree of automation, personalized steam, all programs are concentrated on a button, extraordinary fool fuzzy control, each operator convenience. Boiler operating system using automatic intelligent electronic control system for the automatic control of all operating states can glance. You can observe in the display to the boiler work state, state boiler water level, steam pressure state level, pump operation status, fault alarm status, allowing you to keep abreast of boiler operating conditions, use more confidence. Using high-quality components all piping and instrumentation connections are made of stainless steel or copper pipe connections, electrical appliances are the most well-known of West Germany Electric, safe and reliable, luxuriously equipped. Multi-chain security features. Products fitted with a boiler inspection by checking the safety valve, pressure controller overpressure protection against boiler due to excessive pressure caused by the explosion; as well as low level protection limit, the boiler will stop automatically in case the water supply is stopped to prevent the phenomenon of dry boiler electric heating element damage even lead to burnout. Leakage protection so that safety of operating personnel and equipment more secure, even when a short circuit caused by improper operation of the boiler, the boiler will automatically cut off the circuit if leakage current and timely protect the operator and control lines. Easy to install, easy to use products factory have passed strict debugging, users only need to connect the power supply and water, as long as the boiler to fill the fuel inside the boiler to enter the automatic running state, without complicated installation. Scientific design, beautiful appearance cabinet scientific design, internal design structure is reasonable, maintenance is extremely convenient. Boiler shell CNC CNC cutting and hemming a molding process, work fine; shell surface temperature after spray treatment, durable, aesthetically pleasing appearance. The main feature of the supervisory inspection-free steam boiler 1, for a wide range of environmental protection, in line with environmental requirements; 2, economy using the latest energy saving technology can save about 50% of the monthly cost of using highly efficient thermal insulation materials, heat loss is very low fuel savings; 3, having a water safety, overpressure, over temperature protection features, safe and reliable; 4, simple practical boiler structure, small size, easy installation and maintenance, long life; 5, convenience can select any number of automatic computer-based digital display phenotypic two kinds of control, easy to operate, less failure, easy to use; 6, adjustable load can be adjusted as desired within the rated range; 7, this series boiler has 0.4MPa (4 kg), 0.7MPa (7 Gongjin), 1.0MPa (10 kg) of three kinds of steam pressure, steam production from 30KW to 2160KW a total of 27 kinds of specifications models for users to choose according to the needs, can also be custom designed for specific users ; coal, oil, electric, gas steam boiler applications: washing ironing industry: dry-cleaning machine, dryer, washing machine, dryer, ironing machine, iron and other packaging equipment for use Machinery Industry: labeling machines, standard sets of supporting the use of Biological Chemical Industry: supporting a fermentation tank, reactor, sandwich pot, mixer, emulsifier and other equipment used in the food industry machinery: tofu machine, the steam box, sterilization tank, packing machine , coating equipment, sealing machine and other equipment for use in other industries :( oil, automobile) steam cleaning industry (hotels, dormitories, schools) steam or hot water supply, (bridges, railways) concrete curing and so on. Steam boiler steam moisture content too much harm.

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