CN102305675B - Indirect temperature measuring device in entrained flow gasifying furnace - Google Patents
Indirect temperature measuring device in entrained flow gasifying furnace Download PDFInfo
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- CN102305675B CN102305675B CN2011101375449A CN201110137544A CN102305675B CN 102305675 B CN102305675 B CN 102305675B CN 2011101375449 A CN2011101375449 A CN 2011101375449A CN 201110137544 A CN201110137544 A CN 201110137544A CN 102305675 B CN102305675 B CN 102305675B
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Abstract
The invention belongs to the field of measurement and control of boilers and discloses an indirect temperature measuring device in an entrained flow gasifying furnace. The indirect temperature measuring device in the entrained flow gasifying furnace comprises a first spray nozzle and a second spray nozzle which are horizontally distributed in a furnace body and have the same structure, wherein the first spray nozzle and the second spray nozzle penetrate through the furnace body; one end, which is positioned inside the inner cavity of the furnace body, of the first spray nozzle is connected with a first water cooling hood; one end, which is positioned inside the inner cavity of the furnace body, of the second spray nozzle is connected with a second water cooling hood; the first water cooling hood and the second water cooling hood are trumpet-shaped and ends with bigger trumpet openings face the center of the furnace body; the horizontal central axial lines of the first water cooling hood and the second water cooling hood are the same line; a water inlet pipe is coiled on the second water cooling hood; a water outlet pipe is coiled on the first water cooling hood; a flow meter and a water inlet temperature meter are arranged on the water inlet pipe; and a water outlet temperature meter is arranged on the water outlet pipe. The indirect temperature measuring device in the entrained flow gasifying furnace has the characteristics of reasonable structure, and capacities of protecting equipment in the furnace and ensuring the temperature measuring precision, and can measure the temperature accurately in real time; and simple and convenient computation is guaranteed.
Description
Technical field
The invention belongs to the boiler measurement and control area, relate to the indirect temperature-measuring device in a kind of boiler, be specifically related to the indirect temperature-measuring device in a kind of airflow bed gasification furnace.
Background technology
Entrained flow gasification is a kind of important form of gasification of coal, and feed coal is to go into stove with powdery, and fine coal and vaporized chemical spray into gasification furnace together by nozzle or burner, in gasification furnace, mixes fully, burning and gasification reaction.Gasification furnace is that gasification reaction provides reaction compartment, and the temperature of reaction of entrained flow gasification is very high, generally is maintained to 1400-2000 ℃ high temperature, thereby has guaranteed the conversion fully of carbon.The slag tap mode is adopted in gasification, and slag at high temperature is in a liquid state, and on the gasification furnace furnace wall, is cooled, and forms solid-state and liquid slag film, and liquid slag flows downward along the gasification furnace furnace wall, flows out from cinder notch.Flying dust gets into follow-up system with high-temperature flue gas and carries out separating treatment.
The Control for Kiln Temperature of airflow bed gasification furnace is the key that can gasification furnace safe and stable operation.If the gasifier operation temperature is too high, then the radiation heat transfer amount of unit area can not form stable slag blanket with too high attached to the lime-ash on the furnace wall on the gasification furnace inner furnace wall heating surface, does not reach the purpose of protection furnace wall; If furnace wall is a fire resistive material, then the furnace wall fire resistive material will be worked under hot conditions, and too high temperature will be burnt fire resistive material; If furnace wall is a water wall structure, the radiation heat transfer amount of then transmitting to the water-cooling wall unit area in the stove is too high, and the steam quality of steam water interface is too high in the water-cooling wall, heat transfer deterioration, and water screen tube will be burnt out.If the gasifier operation temperature is low excessively simultaneously, then the deslagging of gasification furnace is difficult, and the stifled easily slag of following cinder notch causes accident.The furnace temperature of gasification furnace also will influence the gasification reaction that drops into material, if the gasification furnace Control for Kiln Temperature is too high, then be because the excessive reason of oxygen, the ratio oxygen consumption of gasification and than coal consumption will increase, cold gas efficiency decline.If the gasification furnace Control for Kiln Temperature is low excessively, then because going into stove amount of oxygen deficiency causes that efficiency of carbon conversion will reduce, having not, the carbon of complete reaction leaves gasification furnace with lime-ash.Therefore, gasifier temperature is to reflect directly whether gasification furnace normally moves one of most important parameter, and the measurement of gasification furnace furnace temperature is the very important sport technique segment in this field.
At present, the method that the indirect measurement of gasifier temperature is judged mainly contains following two kinds: a kind of CO2 of being and CH4 determining method, fine coal and oxygen, steam generate CO, CO2, H2 and micro-CH4 behind the gasification furnace internal reaction.If the oxygen addition increases, CO, H2, CH4 will further burn, and make temperature rising in the stove.CO and CH4 generate CO2 after reaction, cause CO2 content to raise, and CH4 content descends.So the content of CO2 or CH4 can reflect the interior temperature of coming out of the stove.This method is a kind of determination methods to furnace temperature, and time-delay is arranged, and when going into the variation of stove ature of coal, will influence the measurement judged result.Another kind is the steam flow method; When the gasification furnace inner furnace wall is water wall structure, can utilize the steam production of water-cooling wall to judge that furnace temperature, this method can be used for judging furnace temperature; But because the steam production of measuring is the steam production of whole all heating surfaces of gasification furnace; And the unit area thermal load of each heating surface of gasification furnace is very different, and can not accurately calculate the local temperature of burner hearth reaction zone so use this method, and can only be used for judging qualitatively the variation of furnace temperature.The existence of this slag blanket will make and utilize the radiation caloric receptivity to calculate the complicacy more of the process change of gasification temperature owing to adhering to slag blanket on the water-cooling wall while.In a word, it is big that present indirect measurement computing method are measured the time constant as a result that computation process is complicated, measuring result error is big, disturbing factor is many and measure, and is not desirable indirect temperature-measuring method.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art, the purpose of this invention is to provide indirect temperature-measuring device in a kind of airflow bed gasification furnace stove, have rational in infrastructure, thermometric accurately in real time, calculate easy and can either protect facility in the stove, can guarantee characteristics such as temperature measurement accuracy again.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopts is:
Indirect temperature-measuring device in a kind of airflow bed gasification furnace stove; First nozzle 5 and second nozzle, 6, the first nozzles 5 and second nozzle 6 that is included on the body of heater 1 identical the and horizontal arrangement of the structure that is provided with all runs through the end that body of heater 1, the first nozzle 5 is positioned at the inner chamber 2 of body of heater 1 and connects first water-cooling cover 3; The end that second nozzle 6 is positioned at the inner chamber 2 of body of heater 1 connects second water-cooling cover 4; Said first water-cooling cover 3 and second water-cooling cover 4 all are horn-like, and its typhon mouth one end is all towards the center of body of heater 1, are that spider has oral siphon 10 with its central shaft on second water-cooling cover 4; Be that spider has rising pipe 11 with its central shaft on first water-cooling cover 3; Oral siphon 10 and rising pipe 11 are in body of heater 1 internal communication, and oral siphon 10 is provided with flowmeter 9 and entry thermometer 7, and rising pipe 11 is provided with leaving water temperature meter 8.
The horizontal center line axis of said first nozzle 5, second nozzle 6, first water-cooling cover 3 and second water-cooling cover 4 all is same straight line.
The quantity of said first nozzle 5 is more than one, and the quantity of second nozzle 6 is more than one, and preferably first nozzle 5 is identical with the quantity of second nozzle 6.
If the quantity of first nozzle 5 and second nozzle 6 is a plurality of; So; Each first nozzle 5 connects one first water-cooling cover 3; Each first water-cooling cover 3 has all coiled corresponding rising pipe 11, and each second nozzle 6 connects one second water-cooling cover 4, and each second water-cooling cover 4 has all coiled corresponding oral siphon 10.
Another kind of thinking of the present invention; Said oral siphon 10 is communicated with entry collection case 12; Draw the more than one water coil 13 of going into from entry collection case 12 then, said go into water coil 13 dishes the central shaft with second water-cooling cover 4 be spider on second water-cooling cover 4, each goes into water coil 13 counter offers is that spider is on first water-cooling cover 3 at the central shaft with first water-cooling cover 3; The other end of going into water coil 13 inserts water outlet collection case 14, and rising pipe 11 is drawn from water outlet collection case 14.
For adapting to automatically working, can use current consumption sensor to substitute flowmeter 9, be substituted into coolant-temperature gage meter 7 and leaving water temperature meter 8 with temperature sensor.
The present invention compared with prior art has the following advantages:
Because the present invention has adopted the temperature gap through the discharge of water-cooling cover and water-cooling cover discrepancy saliva; The technical scheme of calculating that the water-cooling cover heating surface absorbs from the indirect temperature-measuring of the radiation heat transfer amount of gasification furnace; Have rational in infrastructure, thermometric accurately in real time, calculate easy and can either protect facility in the stove; Can guarantee the characteristics of temperature measurement accuracy again, the present invention simultaneously can be provided with the automatic data acquisition and calculation device, to adapt to the demand of automatically working.
Description of drawings
Fig. 1 is a formation synoptic diagram of the present invention.
Fig. 2 is a water-cooling cover synoptic diagram of the present invention.
Embodiment
Specify embodiment of the present invention below in conjunction with accompanying drawing and embodiment.
Indirect temperature-measuring device in a kind of airflow bed gasification furnace stove; First nozzle 5 and second nozzle, 6, the first nozzles 5 and second nozzle 6 that is included on the body of heater 1 identical the and horizontal arrangement of the structure that is provided with all runs through the end that body of heater 1, the first nozzle 5 is positioned at the inner chamber 2 of body of heater 1 and connects first water-cooling cover 3; The end that second nozzle 6 is positioned at the inner chamber 2 of body of heater 1 connects second water-cooling cover 4; Said first water-cooling cover 3 and second water-cooling cover 4 all are horn-like, and its typhon mouth one end is all towards the center of body of heater 1, are that spider has oral siphon 10 with its central shaft on second water-cooling cover 4; Be that spider has rising pipe 11 with its central shaft on first water-cooling cover 3; Oral siphon 10 and rising pipe 11 are in body of heater 1 internal communication, and oral siphon 10 is provided with flowmeter 9 and entry thermometer 7, and rising pipe 11 is provided with leaving water temperature meter 8.
The course of work of the present invention is following:
When entry thermometer 7 on oral siphon 10 is flowed through in entry and flowmeter 9, they have write down the actual temperature T of entry respectively
1With flow m, during leaving water temperature meter 8 on rising pipe 11 is flowed through in water outlet, it has write down the actual temperature T of water outlet
2
The present invention calculates temperature in the stove according to this area following three formula commonly used, that is:
(1) specific heat at constant pressure formula Q=mC
p(T
2-T
1),
In the formula: Q is a WATER AS FLOW MEDIUM caloric receptivity in the water-cooling cover, and m is the quality flow, C
pBe water specific heat at constant pressure, T
2Be water-cooling cover leaving water temperature, T
1For water-cooling cover is gone into coolant-temperature gage;
(2) radiation heat transfer fundamental equation E=σ α H (T
a 4-T
b 4),
In the formula: E is the radiation heat transfer amount that medium transmits to water-cooling cover in the gasification furnace stove, and σ is the blackbody radiation constant, and α is a burner hearth conversion blackness, T
aBe gasification furnace fire box temperature, T
bBe the water-cooling cover hull-skin temperature;
(3) both can calculate the temperature in the vaporization pool furnace stove according to thermal balance equation Q=E again.
These three kinds of measured datas are transferred to data acquisition commonly used and treating apparatus through connecting line separately, perhaps directly adopt the sensor acquisition data, can obtain the actual temperature in the airflow bed gasification furnace stove through relevant calculating then.
Better embodiment of the present invention; Said oral siphon 10 is communicated with entry collection case 12; Draw the more than one water coil 13 of going into from entry collection case 12 then, said go into water coil 13 dishes the central shaft with second water-cooling cover 4 be spider on second water-cooling cover 4, each goes into water coil 13 counter offers is that spider is on first water-cooling cover 3 at the central shaft with first water-cooling cover 3; The other end of going into water coil 13 inserts water outlet collection case 14, and rising pipe 11 is drawn from water outlet collection case 14.
Need to prove, if the quantity of first nozzle 5 and second nozzle 6 is a plurality of, so; Each first nozzle 5 connects one first water-cooling cover 3, and each first water-cooling cover 3 has all coiled corresponding rising pipe 11, likewise; Each second nozzle 6 connects one second water-cooling cover 4, and each second water-cooling cover 4 has all coiled corresponding oral siphon 10, so; Can on the pipeline of the water outlet tributary of each water-cooling cover, establish a leaving water temperature meter, each water-cooling cover independently calculates temperature in the stove, and temperature compares in the stove that each water-cooling cover calculates; Remove irrational measurement result, remaining result is averaged, guarantee to measure more accurately actual temperature in the stove.Through calculating average leaving water temperature value, and then compare and obtain comparison, like this, more help the interior actual temperature of indirectly testing stove near poor like leaving water temperature with going into coolant-temperature gage.
In addition; Because the present invention is employed in nozzle and is provided with the water-cooling cover measure towards furnace inner space one side; Guaranteed that liquid slag is difficult for flowing to water-cooling cover and gets on the heating surface; And the heating surface that can make water-cooling cover directly with stove in medium carry out radiant heat exchange, both eliminated in the temperature acquisition process liquid slag to the influence of image data, do not influence again heating surface directly and the interior medium of stove carry out radiant heat exchange.
Claims (9)
1. indirect temperature-measuring device in the airflow bed gasification furnace stove; It is characterized in that: first nozzle (5) and second nozzle (6) that are included in the identical and horizontal arrangement of structure that body of heater (1) go up to be provided with; First nozzle (5) and second nozzle (6) all run through body of heater (1); The end that first nozzle (5) is positioned at the inner chamber (2) of body of heater (1) connects first water-cooling cover (3); The other end that second nozzle (6) is positioned at the inner chamber (2) of body of heater (1) connects second water-cooling cover (4); Said first water-cooling cover (3) and second water-cooling cover (4) all are horn-like, and its typhon mouth one end is all towards the center of body of heater (1), and it is that spider has oral siphon (10) that second water-cooling cover (4) is gone up with its central shaft; It is that spider has rising pipe (11) that first water-cooling cover (3) is gone up with its central shaft; Oral siphon (10) and rising pipe (11) are in body of heater (1) internal communication, and oral siphon (10) is provided with flowmeter (9) and entry thermometer (7), and rising pipe (11) is provided with leaving water temperature meter (8).
2. indirect temperature-measuring device in the airflow bed gasification furnace stove according to claim 1 is characterized in that the horizontal center line axis of said first nozzle (5), second nozzle (6), first water-cooling cover (3) and second water-cooling cover (4) all is same straight line.
3. indirect temperature-measuring device in the airflow bed gasification furnace stove according to claim 1 is characterized in that the quantity of said first nozzle (5) is more than one, and the quantity of second nozzle (6) is more than one.
4. indirect temperature-measuring device in the airflow bed gasification furnace stove according to claim 3 is characterized in that, said each first nozzle (5) connects one first water-cooling cover (3), and each first water-cooling cover (3) has all coiled corresponding rising pipe (11).
5. indirect temperature-measuring device in the airflow bed gasification furnace stove according to claim 3 is characterized in that, said each second nozzle (6) connects one second water-cooling cover (4), and each second water-cooling cover (4) has all coiled corresponding oral siphon (10).
6. indirect temperature-measuring device in the airflow bed gasification furnace stove according to claim 3 is characterized in that said first nozzle (5) is identical with the quantity of second nozzle (6).
7. indirect temperature-measuring device in the airflow bed gasification furnace stove according to claim 1; It is characterized in that; Said oral siphon (10) is communicated with entry collection case (12); Draw the more than one water coil (13) of going into from entry collection case (12) then, said go into water coil (13) with the central shaft of second water-cooling cover (4) be spider on second water-cooling cover (4), each goes into water coil (13) is that spider is on first water-cooling cover (3) with the central shaft of first water-cooling cover (3) also; The other end of going into water coil (13) picks out water collection case (14), and rising pipe (11) is drawn from water outlet collection case (14).
8. indirect temperature-measuring device in the airflow bed gasification furnace stove according to claim 1 is characterized in that, said flowmeter (9) substitutes with water flow sensor.
9. indirect temperature-measuring device in the airflow bed gasification furnace stove according to claim 1 is characterized in that, said entry thermometer (7) and leaving water temperature meter (8) substitute with temperature sensor respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101375449A CN102305675B (en) | 2011-05-25 | 2011-05-25 | Indirect temperature measuring device in entrained flow gasifying furnace |
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|---|---|---|---|
| CN2011101375449A CN102305675B (en) | 2011-05-25 | 2011-05-25 | Indirect temperature measuring device in entrained flow gasifying furnace |
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| CN102305675A CN102305675A (en) | 2012-01-04 |
| CN102305675B true CN102305675B (en) | 2012-11-21 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107586568A (en) * | 2017-10-20 | 2018-01-16 | 河南能源化工集团研究院有限公司 | Shell airflow bed gasification furnace reactor slag-drip opening temperature online measurement apparatus and method |
| CN110041968B (en) * | 2019-05-08 | 2023-11-03 | 中国华能集团清洁能源技术研究院有限公司 | Gasifier water-cooled wall safety monitoring device and method |
| CN116731751A (en) * | 2023-06-30 | 2023-09-12 | 清华大学山西清洁能源研究院 | Online monitoring device and online monitoring method for coal gasifier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232919Y (en) * | 1995-11-09 | 1996-08-14 | 高健 | Fixed-bed coal gasifying furnace with furnace temp auto-controller |
| CN2353754Y (en) * | 1997-04-24 | 1999-12-15 | 高健 | Improved fixed-bed coal-gasifying furnace with furnace-temp. automatic cotrol device |
| CN2436787Y (en) * | 2000-07-24 | 2001-06-27 | 安徽省广德县三元工业自动化设备有限公司 | Gas generating furnace with temp. measurer |
| CN101486928A (en) * | 2009-02-18 | 2009-07-22 | 刘宏建 | Temperature control method for fixed bed gasification furnace oxidation zone and gasification furnace |
| CN202107673U (en) * | 2011-05-25 | 2012-01-11 | 中国华能集团清洁能源技术研究院有限公司 | Device for testing temperature in entrained flow bed gasification furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126440A (en) * | 1984-11-22 | 1986-06-13 | Mitsubishi Heavy Ind Ltd | Temperature measuring device |
-
2011
- 2011-05-25 CN CN2011101375449A patent/CN102305675B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232919Y (en) * | 1995-11-09 | 1996-08-14 | 高健 | Fixed-bed coal gasifying furnace with furnace temp auto-controller |
| CN2353754Y (en) * | 1997-04-24 | 1999-12-15 | 高健 | Improved fixed-bed coal-gasifying furnace with furnace-temp. automatic cotrol device |
| CN2436787Y (en) * | 2000-07-24 | 2001-06-27 | 安徽省广德县三元工业自动化设备有限公司 | Gas generating furnace with temp. measurer |
| CN101486928A (en) * | 2009-02-18 | 2009-07-22 | 刘宏建 | Temperature control method for fixed bed gasification furnace oxidation zone and gasification furnace |
| CN202107673U (en) * | 2011-05-25 | 2012-01-11 | 中国华能集团清洁能源技术研究院有限公司 | Device for testing temperature in entrained flow bed gasification furnace |
Non-Patent Citations (1)
| Title |
|---|
| JP特开昭61－126440A 1986.06.13 |
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Owner name: CHINA HUANENG GROUP R + D CENTER Effective date: 20140115 |
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Effective date of registration: 20140115 Address after: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building A block 26 layer Patentee after: China Huaneng Group Clean Energy Technology Research Institute Co., Ltd. Patentee after: Huaneng Group Technology Innovation Center Address before: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building A block 26 layer Patentee before: China Huaneng Group Clean Energy Technology Research Institute Co., Ltd. |