gas fired vertical boiler manufacturer

gas fired vertical boiler manufacturer

1, the safety valve should be mounted vertically in a high position in the pot business, set box.

2, between the safety valve and the drum or header, not equipped with access to the steam outlet pipe and the valve.

3, the lever-type safety valve should prevent movement of the self-apparatus and the weight limit leverage deviant guide tube, a spring safety valve should lift and handle means for preventing movement of the adjustment screw is screwed lightly.

4, the rated steam pressure less than or equal to 3.82MPa gas steam boiler safety valve throat diameter of not less than 25mm; power greater than the rated steam pressure 3.82MPa boiler safety valve throat diameter not less than 20mm.

5, the safety valve and coal-fired steam boiler tubes, the cross-sectional area not less than the cross-sectional area of ​​the valve inlet. If several valves installed together with a short tube directly connected to the drum, the cross-sectional area of ​​the passage should not step short tube to 1.25 times the area of ​​all the exhaust valve.

6, the safety valve should normally be installed exhaust pipe, exhaust pipe should be through a safe place, and there is sufficient cross-sectional area to ensure the smooth flow of exhaust.

7, the safety valve exhaust pipe at the bottom should have received a place of safety posturing of drainage pipe, the exhaust pipe and drainage pipe not allow the installation of the valve.

8, rated evaporation to 0.5t h coal-fired steam boiler /, at least two safety valves installed; Rated evaporation 0.5t h less than or equal to electric boiler /, mounted on at least a safety valve.

Two of the country this year, the NLD Central Democratic National Construction Association Central and made a number of proposals, to speed up the clean and efficient use of coal mine environmental governance has become a hot topic.

NLD central in the proposal pointed out that China's energy structure adjustment should take Duocuobingju way, multi-pronged approach in phasing suppress excessive coal consumption, promote clean and efficient use of coal, etc., it is necessary to focus on environmental protection, but also to resolve the coal system pressure generated by the financial industry, but also pay attention to the industry employment situation of people's livelihood and social stability.

National Bureau of Statistics recently revealed that total energy consumption in 2018, 4.64 billion tons of standard coal, up 3.3 percent over the previous year, of which coal consumption increased by 1.0%. According to statistics, China's coal demand had reached 4.24 billion tons high point in 2013. From 2014 to 2016, coal consumption declined for three consecutive years, from 2017 to 2018 and began to grow, demand for electricity is the most important factor in the growth of coal consumption in our country return to growth.

NLD central in the proposal put forward, to change the traditional extensive coal utilization, promote clean and efficient use is an inevitable choice to realize energy structure adjustment "soft landing". As most of the early years of huge capital investment in the coal industry to achieve through bank credit, the current coal production capacity is still excess capacity, low coal prices, in this case, it should gradually promote the adjustment of energy structure through technology, etc., should not too quickly, leading to financial system pressure increases, the pressure to raise employment and livelihood.

Proposals suggest that the development of coal-based regional energy center, to achieve energy efficiency an "electricity, gas, cold, heat, water" comprehensive energy plan overall, a substantial increase in thermoelectric projects. Forced to upgrade enterprise technology through carbon taxes and sewage charges, increase the proportion of clean energy use. Regional Center for Alternative Energy Development dispersed small boilers. Accelerate the development of clean coal conversion industry, the direct liquefaction of coal, industrialization indirect coal liquefaction, coal gas, coal, ethylene glycol and other technologies to increase support development efforts.

6 tons adjusting a combustion gas steam fired vertical boiler manufacturer, normal combustion boiler three basic aspects of indicators include a uniform supply of the fuel, reasonable ventilation, adjustment the combustion. 1, to maintain the high temperature of the combustion chamber temperature of the upper layer is preferably in the 1100 ~ 1300 ℃, flame orange in color. Flame reddish color indicates that the amount is not enough to the wind, the color white indicates that excessive wind. It should be appropriately adjusted. 2, fuel ash to reduce ash content in the combustibles to be below 10%. 3, reducing the temperature of the boiler flue gas exhaust gas temperature should be controlled below 200 ℃. 4, holding furnace negative excess air boiler is 1.2 to 1.4, by adjusting the balance of the blowers to maintain the furnace pressure is -20 ~ -30Pa. 5, the thermal efficiency of the boiler to improve the thermal efficiency of the boiler should be kept above 60%. II. Combustion Adjustment 1, the amount of fuel to air required for combustion and the amount of a reasonable distribution. Ventilation should first increase the amount of fuel increases, it should first reduce the amount of fuel supply reduced ventilation. 2, the thickness of the seam and seam thickness configuration grate speed is 80 ~ 120mm grate speed at high, middle and low profile configuration of several commonly used methods:. 9a rapid combustion of thin seam b c thick seam in low combustion. 3 thick seam combustion speed, the segment with the wind blowing principle: burn promoting intermediate ends. That is, after the coal into the coal starts to warm up the shutter, fire line front arch, the primary combustion zone, the middle grate to burn the rear grate zone. Normal combustion conditions are: fuel from the coal at the beginning of the fire shutter 300mm, uniform flames, the fire bed formation, at the end of combustion from the end of the grate 300 ~ 500mm. 4. maintain proper furnace temperature to avoid coking. The fire bed to maintain the homogeneous combustion, to avoid burning fire bed obliquely. 6. The residence time of the fuel on the grate in less than 30 minutes.

The main role of the auxiliary fired vertical boiler manufacturer is the effect of several auxiliary boiler auxiliary boiler combustion, are mainly the following: (1) primary fan: drying of fuel, the fuel supplied into the furnace, generally a centrifugal fan; (2) blower: to overcome the air preheater, duct resistance of the burner, combustion air delivery, fuel combustion is maintained; (3) drawing fan: negative flue gases, maintain the chamber pressure, a flow of flue gas, flue gas and air to complete heat exchange; (4) mill: the pulverized coal pulverized coal fineness required, the thickness of the completion of drying and powder separation; (5) a sealing fan: providing a certain air pressure, to prevent powder leakage mill. Stoker: coal, and controlling the amount of coal; (6) Electrostatic precipitator: Dust Removal System: residue positions, machine slag, slag crusher, bucket elevator, wetting mixer, bag filter, automotive bulk machine Of course, in addition to fire detection blower, air compressor, a given row, even row, pumps.

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