CN202281217U - Micro-emission energy-saving coal-to-gas boiler - Google Patents

Abstract

The utility model discloses a micro-emission energy-saving coal-to-gas boiler, which comprises a boiler main body and an air distribution device system. Chamber, heat exchange chamber, through the conversion of coal into combustible gas and full combustion, as well as the optimization design of the comprehensive performance of the boiler, so that it has a high thermal efficiency; through the flue gas recycling and flue gas purification mixed technology to form an air distribution device system, so that the Ringelmann blackness of the flue gas emission reaches the standard, and controls most of the soot particles and sulfur dioxide emissions, achieving the effects of micro-emission, energy saving and environmental protection.

Description

Micro-emission energy-saving coal-to-gas boiler

Technical Field The utility model relates to an energy-saving boiler, in particular to a micro-emission energy-saving coal-to-gas boiler that can be used in various fields such as heating, boiling water, bathing, and steam in civil production and life.

Background technology At present, boilers used in the market for heating, boiling water, bathing, steam, etc. usually have a design structure as follows: the furnace body is provided with a water jacket interlayer or a row of pipes, and the furnace body is provided with an ash chamber, furnace Exhaust, combustion chamber, coal-fired direct combustion, the problem of this kind of boiler is that the fuel is not fully burned, there are many floating particles in the flue gas, and all the generated sulfur dioxide is discharged into the atmosphere, which has a great impact on the environment and the atmosphere.

Summary of the invention In order to overcome the deficiencies and defects of the prior art, the utility model provides a micro-emission energy-saving coal-to-gas boiler, which is mainly aimed at the current civil boilers with insufficient fuel combustion, low thermal efficiency, and smoke Ringelmann blackness that does not meet the standard , The disadvantage that sulfur emission cannot be controlled. Through the conversion of coal into combustible gas and full combustion and the optimized design of the comprehensive performance of the boiler, it has a high thermal efficiency; through the flue gas recycling and flue gas purification mixed technology to form an air distribution device system, so that the flue gas is discharged The Ringelmann blackness reaches the standard, controls most of the soot particles and sulfur dioxide emissions, and achieves the effects of micro-emissions, energy saving and environmental protection.

The purpose of this utility model is achieved through the following technical solutions.

A micro-emission energy-saving coal-to-gas boiler, including a boiler body, an air distribution device system, and a steam generation chamber. The internal working space of the boiler body is sequentially composed of a steam generation chamber, a gas generation chamber, a slag collection chamber, and a gas ignition chamber from bottom to top. , heat exchange chamber, the main body of the boiler is equipped with an air distribution device system, which is characterized in that: the boiler circulating flue gas channel of the air distribution device system is connected to the multi-circuit circulating flue gas set in the boiler water preheating box through the air supply preheating device One side of the fan is connected to the multi-circuit circulating flue gas passage, and the other side is connected to the circulating flue gas outlet located in the alkaline liquid of the purification box. There is a purified flue gas inlet above the purification box, and the purified flue gas inlet passes through the fresh air channel and the mixing The air channel is connected to the fan connected to the air supply preheating device, the air supply preheating device is connected to the main air supply channel through the main air supply port, and the main air supply channel is connected to the internal working space of the boiler through the air supply port and the air pipe.

The top of the gas generating chamber is composed of an insulating layer and heat exchange tubes. There are passages between the heat exchanging tubes. The side of the gas generating chamber is composed of water-cooled walls. The lower part is a fire grate. The door of the gas generating chamber is a sealed structure.

The side wall of the gas ignition chamber is an insulating wall made of insulating material, and there is a gas mixture channel on the insulating wall.

The air distribution device system adopts two modes of manual or microcomputer control.

The steam generating chamber is composed of a sealable anti-seepage slag collection pool and an air duct, and the air duct communicates with the anti-seepage slag collection pool.

The beneficial effects of the utility model are:

1. The coal-to-gas technology adopts the mixed gas generation method, and the coal is burned by the gas generation method, and the combustion method is clean, which can meet the dual requirements of users and environmental protection;

2. Adopt flue gas circulation purification and mixing technology to make unburned gas enter the combustion utilization process again, which can remove most of the large particles of dust and sulfur dioxide in the flue gas, and the residual heat in the flue gas will pre-heat the mixed air entering the air distribution device. It is beneficial to maintain the flue gas temperature in the boiler; preheating the boiler water supply is conducive to improving the working efficiency of the boiler; the height and diameter of the boiler chimney are reduced by 50%-70% compared with the traditional structure, and the comprehensive effect achieves energy saving and environmental protection , The purpose of improving thermal efficiency and work efficiency;

3. Optimize the design, improve the performance of boiler products, reduce product costs, meet the needs of users, and improve the environmental protection performance of civil boiler products;

Four, the utility model can be used for heating, boiling water, bathing, steaming, etc.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic structural view of the utility model.

In Fig. 1: Fire grate 1 in the gas generation room, insulation layer 2, water wall 3, heat exchange tube 4, fire grate 5, insulation wall 6, gas mixture channel 7, heat exchange room insulation layer 8, heat exchange room Heat exchange pipe 9, smoke exhaust port 10, heat exchange chamber 11, circulating flue gas inlet 12, gas ignition chamber 13, air duct 14, air supply regulating valve 15, slag collection chamber 16, main air supply port 17, main Air supply channel 18, separate air supply outlet 19, fan 20 on the air supply preheating device, air supply preheating device 21, mixed air channel 22, fresh air channel 23, multi-circuit circulating flue gas channel 24, boiler water preheating water tank 25. Fan 26, purification flue gas inlet 27, purification box 28, circulating flue gas outlet 29, slag discharge port 30, boiler circulating flue gas channel 31, steam generation chamber 32, anti-seepage slag collection pool 33, gas generation chamber 34.

Detailed ways

Below in conjunction with accompanying drawing and implementation the utility model is described further.

In Figure 1, the micro-emission energy-saving coal-to-gas boiler consists of a gas generation room, a gas ignition room, a heat exchange room, an air distribution device system, and a steam generation room. The gas generating room is composed of a gas generating room grate 1, an insulation layer 2, a water wall 3, and a heat exchange tube 4; The slag collection chamber and other components; the heat exchange chamber 11 is composed of the water cooling wall 3, the heat exchange chamber insulation layer 8, the heat exchange chamber heat exchange tube 9, the smoke exhaust port 10, the circulating flue gas inlet 12, etc.; the air distribution device system Composed of circulating flue gas inlet 12, boiler circulating flue gas channel 31, air supply preheating device 21, main air supply port 17, main air supply channel 18, sub-air supply port 19, air supply regulating valve 15, multi-circuit circulating flue gas Channel 24, slag discharge port 31, boiler water preheating water tank 25, fan 20 on the air supply preheating device, fan 26, purification box 28, circulating flue gas outlet 29, purified flue gas inlet 28, fresh air passage 23, mixing The air channel 22 and the like are formed; the steam generating chamber 32 is formed by the air duct 14 and the seepage-proof slag collecting pool 33 .

The micro-emission energy-saving coal-to-gas boiler is composed of a gas generation chamber, a gas ignition chamber 13, a heat exchange chamber 11, an air distribution device system, a steam generation chamber 32, and the like. The top of the gas generating chamber 34 is composed of an insulating layer 2 and a plurality of heat exchange tubes 4. There is a channel between the 4 heat exchange tubes. The gas mixture generated by coal-fired conversion can enter the gas for ignition via the gas mixture channel 7 along this channel. Chamber 13 provides thermal energy for the system after the gas pilot chamber 13 is ignited. The side of the gas generating chamber is made of water-cooled wall 3, the bottom part is the fire grate 1 of the gas generating chamber, and the furnace door of the gas generating chamber is a sealable structure, which is sealed when the boiler is working. Below the gas generating chamber is a steam generating chamber 32. The steam generating chamber 32 is composed of an anti-seepage slag collecting pool 33 and an air duct 14. The anti-seepage slag collecting pool 33 is sealable. The steam generating chamber 32 is sealed to a certain extent. When coal is added into the gas generating chamber and the primer is ignited, a certain amount of steam will be generated when the carbon ash with a certain temperature falls into the clear water. The air is mixed to form a steam mixture to provide enough gas for the coal gasification in the gas generation chamber. The upper part of the gas generation chamber is a slag collection chamber 16, the upper part of the slag collection chamber 16 is a gas ignition chamber 13, and the side wall of the gas ignition chamber 13 is an insulation wall 6 made of a certain thickness of insulation material. The gas mixture channel 7, the working state of the gas ignition chamber is coal-fired open flame work, the gas entering the ignition chamber is ignited by the open flame and then burns, as the combustion time prolongs, the side wall insulation material of the ignition chamber reserves a large amount of heat energy to form a high temperature zone, providing thermal energy for subsequent gas ignition, thus forming a continuous combustion state. After the gas is burned, a large amount of high-heat mixed flue gas enters the heat exchange chamber. After heat exchange with the water wall 3 and the heat exchange tube 9 in the heat exchange chamber, the temperature of the flue gas decreases to form exhaust gas.

When the dischargeable exhaust gas enters the tail of the heat exchange chamber, the air distribution device system is already in working condition, and a large amount of exhaust gas is sucked into the circulating flue gas inlet 12 by the fan 26, and enters the multi-circuit circulating flue gas channel 23 through the boiler circulating flue gas channel 31 , when the tail gas passes through the above two passages, it provides heat for the mixed air in the air supply preheating device 21 and the water in the boiler water preheating tank 25. When the exhaust gas is in the flue gas channel 23, the temperature and volume of the exhaust gas are reduced to the minimum, and a large number of large particles of smoke sink to the slagging outlet 31 under the action of gravity and the special structure of the inner surface of the multi-circuit circulating flue gas channel 23. Accumulated dust should be cleaned regularly. The preliminarily cleaned tail gas is sprayed into the alkaline liquid in the purification box 29 through the circulating flue gas outlet 28 under the action of the blower fan 26. Under the action of the alkaline liquid, other particulate smoke in the tail gas is absorbed by the liquid, and the sulfur dioxide in the tail gas Neutralized by the alkaline substances in the liquid, the finally cleaned tail gas overflows from the liquid, and enters the mixed air channel 22 through the purified flue gas inlet 27 under the action of the fan 20, and is carried out with the fresh air entered by the fresh air channel 23. Mixed air enters the air supply preheating device 21, and after being preheated by the exhaust gas, enters the main air supply channel 18 through the main air supply port 17, and enters each working space through the sub-air supply ports 19, and the working status of each sub-air supply port is adjusted by the air supply. Valve 15 is regulated.

Claims (5)

1. A micro-emission energy-saving coal-to-gas boiler, including a boiler body and an air distribution device system. The internal working space of the boiler body is sequentially composed of a steam generation room, a gas generation room, a slag collection room, a gas ignition room, and a heating chamber from bottom to top. The exchange room (11) is equipped with an air distribution device system on the main body of the boiler, which is characterized in that: the boiler circulating flue gas channel of the air distribution device system is connected to the boiler water pre-water heating tank (24) through the air supply preheating device (21) The multi-circuit circulating flue gas passage (23) in ), the fan (26) is connected to the multi-circuit circulating flue gas passage on one side, and the other side is connected to the circulating flue gas outlet (29) in the alkaline liquid of the purification box (28) ), there is a purified flue gas inlet (27) above the purification box, and the purified flue gas inlet is connected with the fan connected to the air supply preheating device through the fresh air passage (23) and the mixed air passage (22), and the air supply preheating device The main air supply channel (18) is connected to the main air supply port (17), and the main air supply channel is connected to the internal working space of the boiler through the air supply port (19) and the air pipe (14). 2. The micro-emission energy-saving coal-to-gas boiler according to claim 1, characterized in that: the top of the gas generation chamber (34) is composed of a gas generation chamber insulation layer (2) and a heat exchange tube (4). Passages are left between the heat pipes, the side of the gas generating chamber is composed of water-cooled walls (3), the lower part is the gas generating chamber fire grate (1), and the gas generating chamber furnace door is of a sealed structure. 3. The micro-emission energy-saving coal-to-gas boiler according to claim 1, characterized in that: the side wall of the gas ignition chamber is a thermal insulation wall (6) made of thermal insulation material, and the gas mixture channel (6) on the thermal insulation wall 7). 4. The micro-emission energy-saving coal-to-gas boiler according to claim 1, characterized in that: the air distribution device system adopts two modes of manual or microcomputer control. 5. The micro-emission energy-saving coal-to-gas boiler according to claim 1, characterized in that: the steam generating chamber (32) is composed of an anti-seepage slag collection pool (33) and an air duct (14), and the anti-seepage slag collection Pool (33) is sealed, and the air duct is communicated with the anti-seepage slag collection pool.

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