CN101407723A

CN101407723A - Clean gas generator

Info

Publication number: CN101407723A
Application number: CNA2008101796268A
Authority: CN
Inventors: 张英华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-23
Filing date: 2008-11-23
Publication date: 2009-04-15
Anticipated expiration: 2028-11-23
Also published as: CN101407723B

Abstract

The invention provides a clean fuel gas generator used for providing fuel gas utensils with fuel gas, comprising a combustion furnace, a flue gas washing device, an air supply device, a feeding device, a deashing device and a computer control system. Straw in a hearth is ignited and a hearth door is closed. The blower is started to provide air for the burning straw. When the fuel in the hearth is reduced, a spiral feeder introduces chopped straw in a material tank into the hearth and air from an upper outlet blows about the straw is introduced into the hearth uniformly onto the furnace rake for burning. When a furnace rake is obstructed by too much furnace ash, a deashing electromagnet pulls a deashing shovel so that the furnace ash falls into a furnace ash chamber. To ensure combustion insufficiency so that much combustible hydrocarbon can be contained in the flue gas, air blown out by the blower is humidified. Fuel gas is supplied to fuel gas utensils for use after being cleaned. The invention is suitable for heating in winter in the countryside of northern areas and also for temperature increasing of vegetable greenhouses.

Description

Clean gas generator

Technical field

This relates to the clean gas generator that a kind of combustion gas tool provides combustion gas

Background technology

The retired employees that published one piece of relevant Zhanjiang land reclamation and cultivation on April 5th, 2008 " Zhanjiang evening paper " have invented a kind of clean gas stove and have obtained the report of patent, have published the clean gas stove that the slip-stick artist in Jiangsu Province has invented a kind of tape drum blower fan on this basis afterwards again.Straw in two invention roasting kilns or grass decomposite a large amount of hydrocarbon under the situation of burn incompletely, the flue gas of these hydrocarbonaceous uses for gas furnace after flue dust is removed in cleaning, and gas blower is the roasting kiln incendiary air that provides support, and also are the flue gas supercharging of generation simultaneously.

China is a country vast in territory, and different local climates is widely different, and above-mentioned clean gas stove can be directly used in not all area.We know that Dark smoke billows when the straw of too wet burnt, and the people's that chokes smoke arranged, that is because not fully burning of straw, the organism decomposes of straw goes out hydrocarbon, free carbon molecule and Dioxins, after the dense smoke water that the burning of too wet dirt straw produces cleans, big portion uncombined carbon molecule, macromole hydrocarbon and Dioxins are dissolved in the water, because the small molecule hydrocarbon content of the insoluble in water in the flue gas is less, can not use for gas furnace.In exsiccant straw when burning, produce nattier blue cigarette, the flue gas people that also do not choke so, because the straw sufficient combustion, the flue gas after only producing a spot of small molecule hydrocarbon, uncombined carbon molecule and cleaning can not use for gas furnace.

Have only straw rightly burn incompletely could produce the flue gas of the small molecule hydrocarbon of enough content, just can use after the cleaning for gas furnace.Therefore, the straw water content is factors of the small molecules footpath content in the flue gas that produces of decision straw burning back for the humidity of straw incendiary air and these three parameters of fire box temperature.We know that the specific heat of combustion of water and steam is all very big, and water becomes steam or the water vapour intensification all can absorb a large amount of heat, have so just controlled the temperature when straw burns effectively, have controlled the resultant of straw organism decomposes.

Located in subtropical zone coastland, Zhanjiang, temperature height, high humidity.Drying in the sun straw institute water content is higher, water evaporates absorbs a large amount of heat during the straw burning, the air that humidity is bigger supports airborne water vapour of straw incendiary while also to absorb a large amount of heat energy when heating up, thereby make straw incendiary temperature in more suitable scope, decomposite a large amount of small molecule hydrocarbons when making the straw burning, flue gas can use for gas furnace after cleaning.If this kind clean gas stove is taken the arid desert area, Xinjiang, can't use at all, because the there is dry, drying in the sun straw water content is few, atmospheric moisture is low, straw can only be abundant burning in roasting kiln, and the small molecule hydrocarbon content of generation is very low, and flue gas can not use for roasting kiln after cleaning.If spray water on straw, the amount of water spray is difficult to grasp, and inhomogeneous.Too insufficient when the straw that sprayed water takes fire, thereby Dark smoke billows, intact etc. water evaporates, straw can too fully burn again, and this either way can't normally produce a large amount of small molecule hydrocarbons, and the flue gas after the cleaning can't use as the fuel of gas furnace.

Original in addition clean gas stove just is used to cook, and the short period of time such as boil water uses, and can not be north of china in winter heating, and green house of vegetables heats the fuel gas source that continous-stable is provided.

Summary of the invention:

The present invention can provide a kind of existing clean gas stove defective that overcomes, and the clean gas generator of cleaning, reliable, stable fuel gas source is provided for the combustion gas tool.

For achieving the above object, the present invention has increased humidifying device on the basis of original clean gas stove, feed device, and deashing device, computerized control system is selected in electrical control for use.

Clean gas generator of the present invention comprises roasting kiln, flue gas washing unit, air-supply arrangement, humidifying device, pay-off, deashing device.

The roasting kiln internal layer is made by refractory materials, outer bread one deck lagging material, and outermost layer is made with steel plate.The roasting kiln inner chamber is divided into two Room by furnace rake, and the upper strata is a burner hearth, establishes hearth door; Lower floor is the ashes chambers, establishes the ashes door, and furnace roof has a flue.The flushing water pump of flue gas washing unit is extracted the water in the header tank through the wash fireworks of upper hose from the horizontal flue top out is shone and spray into flue, and the sewage of washing behind the cigarette flows back to header tank through cleaning return line, is recycled behind strainer filtering.Air-supply arrangement is to enter air-supply passage or directly be blown into air-supply passage after being blown into the airheater that is contained in the burning furnace roof with gas blower, divide two-way then: a part directly is blown into burner hearth from last air outlet, another part enters the ashes chamber from following air outlet, be blown into burner hearth from the aperture of furnace rake, for the straw of burner hearth internal combustion provides oxygen.Humidifying device increases humidity for the air in the air-supply passage, and it is divided into steam humidifying device and spray humidifying device.The steam heating device is to be infused in the boiler of roasting kiln top through the boiler magnetic valve after boiler water pump is extracted the water in the water tank out pressurization, water in the boiler is heated and becomes steam and spray into the air-supply passage from the steam variable valve through vapour storage tank, is that the air in the air-supply passage increases humidity.To be portion water that flushing water pump is extracted out enter the spray variable valve from the take-off pipe of upper hose to the spray humidifying device, spray in the air-supply passage then, be air or the air increase humidity after the airheater heating, unnecessary water flows back to header tank through the spray return line and recycles behind strainer filtering.Pay-off is that feed screw is sent the straw that shreds in the storage tank into burner hearth, is loose by the wind that the last air outlet of feed screw outlet below blows out, and falls on the furnace rake equably and burns.Deashing device is the deashing shovel of deashing electro-magnet pulling furnace rake top, ashes is drawn in the hole of furnace rake and is fallen into the ashes chamber.The core of computerized control system is the computer controller, there is liquid-crystal display its top, for providing the components and parts of input signal, the computer controller has: be contained in the other power knob of computer controller, selector button, be contained in the baroceptor in the flue after the cleaning, the hydrocarbon content transmitter, be contained in the smoke transducer in the flue that did not clean, probe stretches into the furnace temperature transmitter of burner hearth top, four temperature controlled switchs around being contained under the burner hearth, be contained in high water level sensor and low water level sensor in the boiler, be contained in the steam capacitive pick-up on the steam variable valve, be contained in the spray capacitive pick-up of spray on the variable valve, be contained in the humidity sensor in the air-supply passage behind the humidification.The device of output control has flushing water pump, gas blower, boiler electro-magnet, boiler water pump, steam variable valve, spray variable valve, feed screw, deashing electro-magnet and fault alarm.

Adopt the clean gas generator of this structure, light the straw in the burner hearth, shut hearth door, starting gas blower provides oxygen for the straw burning.Start feed screw the straw that shreds in the storage tank is sent into burner hearth, burnt by diffusing the trickling down on furnace rake equably of wind that last air outlet blows out.It is too many that straw in burner hearth is piled up, and four the temperature controlled switch Yin Wendu in burner hearth below reduce and move, and signal passes to the computer controller, stops feed screw.The flue gas washing unit cleans up the flue gas in the flue for the combustion gas tool clean gas is provided.When the air pressure of flue gas is not enough, baroceptor generation signal, the computer controller improves the rotating speed of gas blower, finally improves the pressure of flue gas, otherwise will reduce the rotating speed of gas blower.Small molecule hydrocarbon content in flue gas is lower, and low value signal takes place the hydrocarbon content transmitter, when normal signal takes place smoke transducer simultaneously, just needs to increase the humidity of air in the air-supply passage.For example transfer big spray variable valve to increase water spray, make the straw burning in the burner hearth so inabundant, improve the content of small molecule hydrocarbon in the flue gas; If still do not reach requirement, air can be sent into after the airheater heating again and be sprayed humidification in the air-supply passage, improve the air absolute humidity of air-supply passage.In the Xinjiang desert area, can adopt steam to add wet method, the boiler heat absorption can reduce furnace temperature on the one hand, and the steam of steam variable valve ejection can improve the absolute humidity of air in the air-supply passage biglyyer.If hydrocarbon content transmitter generation low levels signal, smoke transducer has sent the dense smoke signal simultaneously, too burn incompletely of the interior straw of burner hearth is described, need to reduce the humidity of air in the air-supply passage, for example turn spray variable valve or steam variable valve down, make the more abundant burning of straw in the burner hearth, increase small molecules hydrocarbon content minimizing smog in the flue gas.If still lose effect, and furnace temperature is also lower, and that is because ashes stop up the hole of furnace rake too much, has reduced the amount of being blown into of air.The computer controller can start the deashing electro-magnet, and the ashes with on the deashing shovel removing furnace rake make it fall ash entrance chamber and make the hole of furnace rake unimpeded.The indoor ashes of ashes are piled up and can be influenced air-supply too much, should open the ashes door and remove ashes, close the ashes door then.Hear fault alarm, in time handling failure.

Description of drawings:

The present invention is further detailed explanation below in conjunction with accompanying drawing.

Fig. 1 is a structure principle chart of the present invention.

Fig. 2 is the outside drawing of air outlet on feed screw outlet of the present invention and the air-supply arrangement.

Fig. 3 is the outside drawing of furnace rake of the present invention and deashing device.

Fig. 4 is a spray variable valve front view of the present invention.

Vertical view when Fig. 5 is in half-open position for the spool of spray variable valve of the present invention.

Vertical view when Fig. 6 is in full-gear for the spool of spray variable valve of the present invention.

Fig. 7 is a steam variable valve front view of the present invention.

Fig. 8 is a computerized control system schematic diagram of the present invention.

Fig. 9 is the structure principle chart of the present invention with airheater.

Embodiment:

Fig. 1, shown in Figure 8, the hearth door 11 of opening roasting kiln 1 will be put into the straw of burner hearth and light, and shut hearth door; Press power knob 83, press selector button 84 again, start the gas blower 31 of air-supply arrangement 3, wind enters burner hearth from last air outlet 32, and enters the ashes chamber from following air outlet 33, and the aperture from furnace rake 13 enters burner hearth then, for the straw burning provides oxygen.Start the feed screw 62 of feed device 6, the straw of chopping in the storage tank 61 is sent into burner hearth, the wind that is blown out by last air outlet 32 is loose and is fallen burning (shown in Figure 2) on the furnace rake 13 equably.There is lid on storage tank 61 tops, can open the straw that increases chopping at any time.When the straw in rendering to burner hearth causes furnace temperature to reduce too soon; Signals take place and give computer controller 81 in furnace temperature transmitter 88, and the rotating speed of feed screw 62 is slowed down.The straw of throwing in burner hearth is too many, buries the probe of temperature controlled switch 89, and the time temperature controlled switch 89 that temperature is reduced to certain value moves, and signal passes to computer controller 81, stops feed screw 62.Straw burning in burner hearth just often starts the flushing water pump 23 of flue gas washing unit 2, and the water in the header tank 25 enters upper hose 22 after 23 pressurizations of cleaning water pump, spills 21 ejections, the flue gas in the flushing flue 14 from washing fireworks then.The unnecessary water in flushing back is got back to header tank 25 through cleaning return line 26, recycles after filter screen 24 filters.Water in header tank 25 can be opened the lid interpolation water on the top more after a little while.Filter screen 24 can be opened the lid of header tank 25 when dirtier, take out filter screen 24, puts back to after cleaning up in the header tank 25.When the air pressure in the flue 14 was low, baroceptor 85 sent signal, and computer controller 81 can increase rotating speed, the raising blast of gas blower 31 and then increase the flue gas pressures of flue 14.Small molecule hydrocarbon content in flue 14 is lower, and signals take place for hydrocarbon content transmitter 86, and when this moment, normal signal took place for smoke transducer 87, computer controller 81 can start humidifying devices.For example motor is just changeing the spool 511 (Fig. 5, shown in Figure 6) of tall and big spray variable valve 51, water in the take-off pipe of upper hose 22 is from spool 511 ejections of spray variable valve 51, increase atmospheric moisture in the air-supply passage, the signal that spray variable valve 51 spools 511 are opened size passes to computer controller 81 by spray capacitive pick-up 814, and the humidity sensor 812 in the air-supply passage also can be passed to moisture signal the size that computer controller 81 control spray variable valve 51 are opened.If the spool 511 of spray variable valve 51 is transferred to maximum (shown in Figure 6), hydrocarbon content transmitter 86 still sends the low signal of content, after heating through the airheater 34 (shown in Figure 9) that is contained in roasting kiln 1 top, the wind that gas blower 31 can be bloated, increases the absolute humidity of air in the air-supply passage again to the air spray humidification of heating.If hydrocarbon content transmitter 86 sends low value signal, smoke transducer 87 sends abnormal signal simultaneously, furnace temperature transmitter 88 sends low-temperature signal, illustrate that the straw burning is too insufficient in the burner hearth, send the atmospheric moisture in the subchannel too big, computer controller 81 can make the motor counter-rotating turn the spool 511 (shown in Figure 5) of spray variable valve 51 down, reduce water spray, reduce the humidity of air in the air-supply passage, the interior straw of burner hearth is fully burnt, increase the content of small molecule hydrocarbons in the flue 14.Spray unnecessary water and flow back to header tank 25, after filter screen 24 filters, recycle through spray return line 52.

In the Xinjiang desert area, cold winter, the absolute humidity of air is very low, straw institute water content is also very low, use spray humidification method to be difficult to take effect, need to use steam device 4, the water in the boiler 43 becomes steam through the stove fire heating of roasting kiln 1, and spraying into air-supply passage through vapour storage tank 47 from steam variable valve 41 is air moistening.Water in boiler 43 reduces to certain value, low water level sensor 810 sends signal, computer controller 81 can start boiler water pump 45 with the pressurization of the extraction in the water tank 46, open boiler magnetic valve 44 then water is injected pot 43, send signal up to high water level sensor 811, computer controller 81 can stop boiler electro-magnet 44 earlier, stops boiler water pump 45 again.The steams that this section period boiler 43 does not produce in the steam vapour storage tank 47 can play shock absorption, and the safety valve 42 on the vapour storage tank 47 can avoid that vapour pressure is too high to cause danger.The lid that more after a little while can open on its top when the water in the water tank 46 adds water, then cover lid.When furnace temperature reduces, the air pressure of flue 14 also reduces, baroceptor 85 and furnace temperature transmitter 88 send low value signal simultaneously, too many that ashes are piled up on the furnace rake 13 is described, the deashing electro-magnet 72 of computer controller 81 meetings startup deashing device 7 spurs deashing shovel 71 (shown in Figure 3) on the furnace rake 13 repeatedly, ashes are pushed in the hole of furnace rake 13, fall into the ashes chamber.When the indoor ashes of ashes are too many, can open ashes door 12, the ashes that ashes are indoor go out clearly, shut ashes door 12 then.

If clean gas generator breaks down, the chimes of doom that warning howler 815 can send.Can observe clean gas generator running condition by liquid crystal display 82.Can set various parameters and startup by power knob 83 and selector button 84, stop the running of clean gas generator.

The present invention also can become the clean gas generator of short period of time use by simplifying.For example, cancellation water tank 46, boiler water pump 45, boiler electro-magnet 44, storage tank 61, feed screw 62, deashing electro-magnet 72 and deashing shovel 71, last air outlet 32, temperature controlled switch 89, high water level sensor 810, low water level sensor 811.Change baroceptor 85 into weather gage, hydrocarbon content transmitter 86 changes the hydrocarbon content table into, smoke transducer 87 changes the smog table into, furnace temperature transmitter 88 changes oven thermometer into, humidity sensor 812 changes wet bulb thermometer into, and electronic steam variable valve 41 changes manual steam variable valve into, and cancellation steam capacitive pick-up 813, electronic spray variable valve 51 changes hand spray variable valve into, and cancellation spray capacitive pick-up 814.When using the clean gas generator of simplifying, according to weather gage, hydrocarbon content table, smog table, oven thermometer, wet bulb thermometer are regulated manual steam variable valve or are manually sprayed variable valve, reach the purpose of regulating atmospheric moisture in the air-supply passage.Regulate the air quantity of gas blower 31 with the size of regulating gas blower 31 blast inlets.Ashes are more can open hearth door 11 or ashes door 12, and the ashes with on the crampon removing furnace rake 13 make it fall into the ashes chamber.Straw in the burner hearth is opened burner hearth interior 11 and is increased straw more after a little while, shuts hearth door 11 then.The clean gas generator of every employing said structure is all in protection scope of the present invention.

Claims

1, a kind of clean gas generator, comprise roasting kiln, flue gas washing unit, air-supply arrangement, electric control system, base is characterised in that: described clean gas generator also comprises humidifying device, pay-off (6), deashing device (7), described electric control system adopts computerized control system (8).

2, according to the described clean gas generator of claim 1, it is characterized in that: described humidifying device is steam humidifying device (4), injection was arranged in the vertical boiler of roasting kiln (1) (43) through boiler electro-magnet (44) after boiler water pump (45) was extracted the water in the water tank (46) out pressurization, the steam that boiler (43) produces is positioned at the spout ejection of the air-supply passage side of air-supply arrangement (3) from steam variable valve (41) through vapour storage tank (47), increase the humidity of air in the air-supply passage, sky safety valve (42) is housed on the described vapour storage tank (47).

3, according to the described clean gas generator of claim 1, it is characterized in that: described humidifying device is a spray humidifying device (5), the take-off pipe of sending into upper hose (22) after flushing water pump (23) is extracted the water in the header tank (25) out is sprayed onto the air-supply passage of air-supply arrangement (3) from the spool (511) that sprays variable valve (51), increased atmospheric moisture in the air-supply passage, unnecessary water is got back in the header tank (25) through spray return line (52), recycles after filter screen (24) filters.

4, according to the described clean gas generator of claim 3, it is characterized in that: the air of spray humidifying device (5) spray before the humidification is that gas blower (31) is blown into and is arranged in the air of sending into air-supply passage after the vertical airheater of roasting kiln (1) (34) heating, improves the absolute humidity behind the spray humidification.

5, according to the described clean gas generator of claim 1, it is characterized in that: to be the feed screw (62) that is arranged in storage tank (61) below send the straw of storage tank (61) chopping into the burner hearth of roasting kiln (1) with described pay-off (6), be positioned at the wind that the last air outlet (32) of the air-supply arrangement (3) of feed screw (62) outlet below blows out diffusing, evenly be scattered on the furnace rake (13).

6, according to the described clean gas generator of claim 1, it is characterized in that: described deashing device (7) is the deashing shovel (71) that deashing electro-magnet (72) pulling of band return spring is positioned at furnace rake (13) top, falls into the ashes chamber in the hole of the furnace rake (13) that ashes are pushed.

7, according to the described clean gas generator of claim 1, it is characterized in that: described computerized control system (8) is a core with computer controller (81), the top is liquid crystal display (82), input signal is by being contained in computer controller (81) other power knob (83) and selector button (84), be installed in the baroceptor (85) and the hydrocarbon content transmitter (86) of flue (14) lining of washing after fireworks spill (21), be installed in and wash the smoke transducer (87) that fireworks spill (21) preceding flue (14) lining, probe stretches into the stove wet sensor (88) of roasting kiln (1) burner hearth top, probe extend into four temperature controlled switchs (89) around roasting kiln (1) the burner hearth below, be installed in high water level sensor (810) and low water level sensor (811) in the boiler (43), be installed in the humidity sensor (812) in the air-supply passage behind air-supply arrangement (3) humidification, be installed in the steam capacitive pick-up (813) on the steam variable valve (41), the spray capacitive pick-up (814) that is installed on the spray variable valve (51) produces.The device of output control has: flushing water pump (23), and gas blower (31), boiler magnetic valve (44), boiler water pump (45), spiral send bar machine (62), and deashing electro-magnet (72) is contained in the other warning howler (815) of computer controller (81).