CN203421712U - Double-bed synchronous gas supply structure of updraught type fixed bed gasification furnaces - Google Patents
Double-bed synchronous gas supply structure of updraught type fixed bed gasification furnaces Download PDFInfo
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- CN203421712U CN203421712U CN201320383270.6U CN201320383270U CN203421712U CN 203421712 U CN203421712 U CN 203421712U CN 201320383270 U CN201320383270 U CN 201320383270U CN 203421712 U CN203421712 U CN 203421712U
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- gasification furnace
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Abstract
The utility model provides a double-bed synchronous gas supply structure of updraught type fixed bed gasification furnaces. The double-bed synchronous gas supply structure of the updraught type fixed bed gasification furnaces can improve the thermal power of the gasification furnace and avoid energy waste. The double-bed synchronous gas supply structure of the updraught type fixed bed gasification furnaces comprises the two gasification furnaces. A gas output port of each gasification furnace is connected with a balance box through a gas delivery pipeline of the corresponding gasification furnace. A gas outlet of the balance box is connected with a combustor of a boiler through a main gas pipeline. The two gasification furnaces are connected in parallel. Gas of one gasification furnace and gas of the other gasification furnace are mixed and input into the boiler for combustion, so that the requirement for power of the boiler with high power is satisfied. When the boiler is operated in the low-power state, one gasification furnace can be stopped, and therefore energy waste is avoided. The balance box is arranged, so that the gas output by one gasification furnace and the gas output by the other gasification furnace can be mixed, the pressure inside the balance box is controllable, the gas in the gasification furnace with the higher pressure is prevented from flowing backwards to the gasification furnace with the lower pressure, and therefore system safety is guaranteed.
Description
Technical field
The utility model belongs to Biomass Energy Utilization technical field, specially refers to the synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed.
Background technology
Utilizing biomass gasification technology transformation miniature boiler coal-fired, that fire heavy oil is an effective boiler improvement approach, can reach object energy-conservation and that reduce discharging.(the corresponding patent No. is: 200620058696.4,201120030716.8) at biological fuel gas, aspect oily boiler of feeding burning, obtained good achievement at " middle part give vent to anger updraft type fixed-bed gasification furnace " that for example Dongguan Bai great new forms of energy limited company produces.Utilize the burning of biogas boiler of feeding, 3～3.5 tons of biogas that firewood produces, can replace 1 ton of diesel oil, save fuel cost more than 50%.In boiler exhaust gas, harmful gas emission reduces, and best result reaches and reduces discharging 80%, has received significant economic benefit and social benefit.But utilize at present biogas replacing oil combustion, also have a very large problem, exactly the thermal power of single gasification furnace can only meet 2 tons/time boiler needs, and to 4 tons/time and the Industrial Boiler of above tonnage can not meet the demands.
One of approach that improves gasification furnace thermal power is the specification that expands existing gasification furnace, but expanding single-machine capacity has certain limit: as processing and condition, higher to the requirement of material; Operational reliability reduces relatively; The more important thing is that in use, boiler only needs low power run sometimes, and gasification furnace cannot low power run, therefore will produce the phenomenon of " low load with strong power ", wastes energy.
Summary of the invention
The purpose of this utility model is to propose the synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed, improves gasification furnace thermal power, and avoids energy waste.
The synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed of the present utility model comprises two gasification furnaces, the combustion gas delivery outlet of described each gasification furnace all gas supply pipe Lu Yuyi tandem-driving bogie by separately connects, and the gas outlet of described tandem-driving bogie is connected with the burner of boiler by main combustible pipe road.
By two gasification furnace parallel connections, and the combustion gas mixing of each gasification furnace is inputed to boiler internal combustion, can meet the power demand of the boiler of higher-wattage.When boiler moves under low power state, can close a gasification furnace, avoid causing energy waste.Tandem-driving bogie is set can be mixed the combustion gas of each gasification furnace output, makes the pressure in tandem-driving bogie controlled, avoids the combustion gas in gasification furnace that pressure is larger to pour in down a chimney in the gasification furnace that pressure is less, guarantees security of system.
Further, described each gas supply pipe road is provided with valve, for each gas supply pipe road is controlled, avoids the combustion gas in tandem-driving bogie to pour in down a chimney in the gasification furnace of not working.
Further, the exhaust-valve that described main combustible pipe road is provided with safety valve and is communicated with atmosphere, to guarantee boiler operatiopn safety.
Utilize the synchronous air supply method of the synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed as follows: the gas supply pipe road by the combustion gas of two gasification furnaces by is separately delivered in a tandem-driving bogie mixes, and mixed combustion gas is delivered in boiler and is burnt by main combustible pipe road; Air blast by gasification furnace regulates the gaseous-pressure in gas supply pipe road separately, makes the gaseous-pressure in each gas supply pipe road all be greater than the gaseous-pressure in tandem-driving bogie; And air-introduced machine is set in boiler, by this air-introduced machine, making the pressure in boiler furnace is negative pressure, thereby makes the gaseous-pressure in tandem-driving bogie be greater than the pressure in boiler furnace.By controlling the pressure of gas supply pipe road, tandem-driving bogie and boiler, can make combustion gas under pressure differential effect, naturally flow to boiler, and avoid down combustion.
Further, in the course of the work, according to current boiler power demand, control the duty of each gasification furnace, the power output sum of gasification furnace and current boiler power demand are matched; And by the valve closing on the gas supply pipe road of the gasification furnace of not working.Thereby avoid energy waste and combustion gas to pour in down a chimney in the gasification furnace of not working.
Further, after unexpected boiler flameout, utilize safety valve to close main combustible pipe road, and open the exhaust-valve in main combustible pipe road, the combustion gas in main combustible pipe road is entered in atmosphere; Close the air blast of each gasification furnace simultaneously, make gasification furnace out of service; And the air-introduced machine of controlling boiler works on, the remaining combustion gas in boiler is discharged.
The utility model utilizes the gasification furnace of technology maturation air feed in parallel, and gasification furnace power is increased greatly, and two gasification furnaces can air feed in parallel, also can single furnaceman do another stove maintaining; Or when power requirement is not enough, adopt single stove mode to work, reach the object of saving the energy.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed of the present utility model.
The specific embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present utility model is described in further detail as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and operation principle etc.
Embodiment 1:
As shown in Figure 1, the synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed of the present embodiment comprises two gasification furnaces 1, the combustion gas delivery outlet of described each gasification furnace 1 is all by a gas supply pipe Lu Yuyi tandem-driving bogie 2 connections separately, and the gas outlet of described tandem-driving bogie 2 is connected with the burner of boiler 4 by main combustible pipe road 3.
The gas supply pipe road of gasification furnace 1 is provided with valve 5, for each gas supply pipe road is controlled, avoids the combustion gas in tandem-driving bogie 2 to pour in down a chimney in the gasification furnace 1 of not working.
The exhaust-valve 7 that main combustible pipe road 3 is provided with safety valve 6 and is communicated with atmosphere, to guarantee boiler 4 security of operation.
By two gasification furnace 1 parallel connections, and the combustion gas mixing of each gasification furnace 1 is inputed to boiler 4 internal combustion, can meet the power demand of the boiler 4 of higher-wattage.When boiler 4 moves under low power state, can close certain gasification furnace 1, avoid causing energy waste.Tandem-driving bogie 2 is set can be mixed the combustion gas of each gasification furnace 1 output, makes the pressure in tandem-driving bogie 2 controlled, avoids the combustion gas in gasification furnace 1 that pressure is larger to pour in down a chimney in the gasification furnace 1 that pressure is less, guarantees security of system.
Concrete synchronous air supply method is as follows: biomass fuel is dropped into and in gasification furnace, produces combustion gas, the gas supply pipe road of the combustion gas of two gasification furnaces 1 by is separately delivered in a tandem-driving bogie 2 mixes, and mixed combustion gas is delivered in boiler 4 and is burnt by main combustible pipe road 3; Air blast 8 by gasification furnace 1 regulates the gaseous-pressure in gas supply pipe road separately, makes the gaseous-pressure in each gas supply pipe road all be greater than the gaseous-pressure in tandem-driving bogie 2; And at the interior air-introduced machine 9 that arranges of boiler 4, making the pressure in boiler 4 burner hearths by this air-introduced machine 9 is negative pressure, thereby make the gaseous-pressure in tandem-driving bogie 2 be greater than the pressure in boiler 4 burner hearths.By controlling the pressure of gas supply pipe road, tandem-driving bogie 2 and boiler 4, can make combustion gas under pressure differential effect, naturally flow to boiler 4, and avoid down combustion.
In the course of the work, according to current boiler 4 power demands, control the duty of each gasification furnace 1, the power output sum of gasification furnace 1 and current boiler 4 power demands are matched; And the valve 5 on the gas supply pipe road of the gasification furnace of not working 1 is closed.Thereby in the gasification furnace 1 of avoiding energy waste and combustion gas to pour in down a chimney not working.
After boiler 4 accident extinguishings, utilize safety valve 6 to close main combustible pipe road 3, and open the exhaust-valve 7 in main combustible pipe road 3, the combustion gas in main combustible pipe road 3 is entered in atmosphere; Close the air blast 8 of each gasification furnace 1 simultaneously, make gasification furnace 1 out of service; And the air-introduced machine 9 of controlling boiler 4 works on, the remaining combustion gas in boiler 4 is discharged.
Specifically, the key technology that realizes double bed air feed in parallel is Based Intelligent Control, and system is provided with take the controller that PLC is core, coordinates thermocouple type temperature sensor, pressure sensor, and realizes the frequency converter that fan delivery is controlled.The boiler 4 output steam pressures of take are control centre, when boiler 4 output steam pressures approach or reach pressure index, reduce or stop providing biomass fuel tolerance to boiler 4; When gasification furnace 1 bottom temp is increased to rated temperature, reduce air addition, when gasification furnace 1 head temperature is both increased to fixed temperature, start feeding device, auto feed, when gasification furnace 1 top pressure is during higher than rated pressure, increases boiler 4 air-introduced machine 9 air inducing amounts.
Claims (3)
1. the synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed, it is characterized in that comprising two gasification furnaces, the combustion gas delivery outlet of described each gasification furnace all gas supply pipe Lu Yuyi tandem-driving bogie by separately connects, and the gas outlet of described tandem-driving bogie is connected with the burner of boiler by main combustible pipe road.
2. the synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed according to claim 1, is characterized in that described each gas supply pipe road is provided with valve.
3. the synchronous gas-supplying structure of updraft type fixed-bed gasification furnace double bed according to claim 1 and 2, is characterized in that the exhaust-valve that described main combustible pipe road is provided with safety valve and is communicated with atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320383270.6U CN203421712U (en) | 2013-07-01 | 2013-07-01 | Double-bed synchronous gas supply structure of updraught type fixed bed gasification furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320383270.6U CN203421712U (en) | 2013-07-01 | 2013-07-01 | Double-bed synchronous gas supply structure of updraught type fixed bed gasification furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203421712U true CN203421712U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320383270.6U Expired - Fee Related CN203421712U (en) | 2013-07-01 | 2013-07-01 | Double-bed synchronous gas supply structure of updraught type fixed bed gasification furnaces |
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| CN (1) | CN203421712U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353123A (en) * | 2013-07-01 | 2013-10-16 | 东莞市百大新能源股份有限公司 | Synchronous double-bed air feeding method and structure for updraught type fixed bed gasifiers |
| CN103939880A (en) * | 2014-04-14 | 2014-07-23 | 东莞市百大新能源股份有限公司 | Self-adaption intelligent control method for biomass gasification thermal energy conversation system |
-
2013
- 2013-07-01 CN CN201320383270.6U patent/CN203421712U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353123A (en) * | 2013-07-01 | 2013-10-16 | 东莞市百大新能源股份有限公司 | Synchronous double-bed air feeding method and structure for updraught type fixed bed gasifiers |
| CN103939880A (en) * | 2014-04-14 | 2014-07-23 | 东莞市百大新能源股份有限公司 | Self-adaption intelligent control method for biomass gasification thermal energy conversation system |
| CN103939880B (en) * | 2014-04-14 | 2016-01-06 | 东莞市百大新能源股份有限公司 | A kind of self-adapting intelligent control method of gasification of biomass thermal power transfer system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20190701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |