CN102607168A - High-temperature high-pressure air heating furnace - Google Patents
High-temperature high-pressure air heating furnace Download PDFInfo
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- CN102607168A CN102607168A CN2012100616777A CN201210061677A CN102607168A CN 102607168 A CN102607168 A CN 102607168A CN 2012100616777 A CN2012100616777 A CN 2012100616777A CN 201210061677 A CN201210061677 A CN 201210061677A CN 102607168 A CN102607168 A CN 102607168A
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Abstract
The invention discloses a high-temperature high-pressure air heating furnace which comprises a steel frame and is characterized in that a heating furnace main body and an adiabatic combustion furnace are arranged on the steel frame; a combustor is arranged below the adiabatic combustion furnace; a self-use air inlet is arranged at one side of the combustor; the upper part of the adiabatic combustion furnace is fixed with the heating furnace main body; the heating furnace main body is divided into a high-temperature section high-pressure air heater, a medium-temperature section high-pressure air heater and a low-temperature section high-pressure air heater from bottom to top; working medium sides of the three heaters are communicated through an air connection pipe; the smoke sides of heating surfaces of the three heaters are communicated through a connection flue; the upper end of the low-temperature section high-pressure air heater is connected with a tube-shell type self-use air pre-heater; a chimney is fixed above the tube-shell type self-use air pre-heater; a self-use air inlet and a self-use air outlet are respectively arranged at the two sides of the tube-shell type self-use air pre-heater; the self-use air outlet at one side is communicated with the self-use air inlet of the combustor through a self-use air communication pipe; and the self-use air inlet at the other side is connected with a blower through a pipe. The high-temperature high-pressure air heating furnace is compact in structure and is capable of running securely and stably.
Description
Technical field
The present invention relates to a kind of heating furnace, specifically a kind of HTHP air-heating furnace.
Background technology
The IGCC generation technology is regarded as the important directions of 21 century coal electricity development, is one of otherwise effective technique approach that solves the sustainable development of coal electricity.IGCC generation technology integrated gasification combined cycle plants (Integrated Gasification Combined Cycle, be called for short IGCC) is meant to obtain synthesis gas after fuel gasified, with the generation technology that is used for the gas-steam combined circulation behind the purified synthesis gas.The IGCC technology is to combine combined cycle generation system of fuel gas-steam and clean gas technology efficiently, and existing high generating efficiency has the excellent environment-protective performance again, is a kind of promising clean coal power generation technology.In the IGCC generation technology, at first to solve Coal Gasification Technology, be the raising gasification efficiency, need in coal gasification course, provide high temperature, pressure-air to make catalyst to gasification furnace.At present, domesticly be still blank, drawback such as the conventional air heating furnace technology ubiquity thermal efficiency is low, and service life is short, and it is little to add quantity of hot air, and heat air pressure is low at big capacity HTHP air-heating furnace technical elements.
Summary of the invention
According to the technical problem of above-mentioned proposition, in order to break through existing air-heating furnace technology, satisfy the demand of coal gasification to the HTHP air, the invention provides a kind of HTHP air-heating furnace.This heating furnace pressure-air bringing-up section has adopted the pan shell type structure, and high-temperature flue gas is walked tube side, and pressure-air is walked shell side.Adopt cast refractory concrete and heat exchanger tube to install the reliably thermal insulation of form of ceramic protecting pipe additional at high warm tube plate place; Adopt simultaneously and extract low-temperature flue gas in combustion furnace flue gas recycled mixing chamber; With the high-temperature flue gas hybrid cooling, guaranteed the safety of temperature end tube sheet operation.
The technological means that the present invention adopts is following:
A kind of HTHP air-heating furnace; Comprise steelframe; It is characterized in that: heating furnace main body and adiabatic combustion stove are housed on the said steelframe; Said adiabatic combustion stove below is provided with burner, and a side of said burner is provided with personal air intake, and said adiabatic combustion stove top is fixed with said heating furnace main body; Said heating furnace main body mainly adopts multistage pan shell type convection heating surface structure; Be followed successively by high temperature section pressure-air heater, middle-temperature section pressure-air heater and low-temperature zone pressure-air heater from down to up; The working medium side of said high temperature section pressure-air heater, middle-temperature section pressure-air heater and low-temperature zone pressure-air heater is connected through the air tube connector, and said high temperature section pressure-air heater, middle-temperature section pressure-air heater and low-temperature zone pressure-air the heater fume side of heating surface separately are connected through being connected flue; Said low-temperature zone pressure-air heater upper end links to each other with the personal air preheater of shell-and-tube; The upper fixed of the personal air preheater of said shell-and-tube has chimney; The personal air preheater both sides of said shell-and-tube are respectively equipped with personal air intake and personal air outlet slit; The personal air outlet slit of personal air preheater one side of said shell-and-tube and the personal air intake of said burner are connected through personal air communication pipe, and the personal air intake of the personal air preheater opposite side of said shell-and-tube communicates with pressure fan through pipeline.
As preferably, said connection flue is provided with expansion joint.
As preferably, said burner, said adiabatic combustion stove, said expansion joint and the said flue that is connected are all laid castable refractory.
As preferably, be equipped with heat exchanger tube in the heating surface of said high temperature section pressure-air heater, middle-temperature section pressure-air heater and low-temperature zone pressure-air heater, exhaust gases passes and pressure-air passage are separated, and flue gas is walked tube side, and pressure-air is walked shell side.
As preferably, said high temperature section pressure-air heater, middle-temperature section pressure-air heater and low-temperature zone pressure-air heater all adopt the pan shell type structure.
As preferably, be equipped with deflection plate in the shell side of said high temperature section pressure-air heater, middle-temperature section pressure-air heater and low-temperature zone pressure-air heater.
As preferably, the hull outside of said high temperature section pressure-air heater, middle-temperature section pressure-air heater and low-temperature zone pressure-air heater is equipped with heat-insulation layer, and the material of said heat-insulation layer is an alumina silicate fiber felt.
As preferably, the high-temperature flue gas exit of said adiabatic combustion stove is provided with the flue gas recycled mixing chamber, and said chimney is provided with the flue gas recirculation interface, and said flue gas recirculation interface and said flue gas recycled mixing chamber are connected through the flue gas recirculation tube connector.
As preferably, also be provided with manhole on the said adiabatic combustion stove.
The present invention has the following advantages:
HTHP air-heating furnace provided by the invention has characteristics such as manufacturing process is simple, installation and maintenance convenient, security of operation is stable, bearing capacity is strong.Can pressure-air be heated to more than 500 ℃ by normal temperature through this heating furnace; Adopt flue gas recirculating technique simultaneously, the terminal flue gas of heater is introduced the flue gas recycled mixing chamber, when reducing the combustion furnace exit gas temperature, increased flue gas flow; Improved velocity of flue gas; The convective heat-transfer coefficient of pressure-air and flue gas is improved greatly, when improving the fuel utilization ratio, again high temperature section heater tube sheet has been carried out cooling protection, reduced the discharge capacity of pollutant.Therefore the present invention suits in HTHP air heat engineering fields such as IGCC coal gasification, to promote the use of.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the left view of Fig. 1.
The specific embodiment
Like Fig. 1, a kind of HTHP air-heating furnace shown in Figure 2.Its structure mainly comprises: burner 1, adiabatic combustion stove 2, high temperature section pressure-air heater 3, middle-temperature section pressure-air heater 4, low-temperature zone pressure-air heater 5, the personal air preheater 6 of shell-and-tube, flue gas recirculation interface 7, chimney 8, heat-insulation layer 9, air cross over pipe 10, heat exchanger tube 11, deflection plate 12, personal air cross over pipe 13, expansion joint 14, connection flue 15, castable refractory 16, flue gas recycled mixing chamber 17, steelframe 18.Heating furnace main body and adiabatic combustion stove 2 are housed on the steelframe 18; The high-temperature flue gas exit of adiabatic combustion stove 2 is provided with flue gas recycled mixing chamber 17; Also be provided with manhole 19 on the adiabatic combustion stove 2, adiabatic combustion stove 2 belows are provided with burner 1, and a side of burner 1 is provided with personal air intake; Opposite side also is provided with manhole, and adiabatic combustion stove 2 tops and heating furnace main body are fixed; The heating furnace main body mainly adopts multistage pan shell type convection heating surface structure, is followed successively by high temperature section pressure-air heater 3, middle-temperature section pressure-air heater 4 and low-temperature zone pressure-air heater 5 from down to up, and syllogic pressure-air heater all adopts the pan shell type structure; And be equipped with deflection plate 12 in the shell side; In shell side, arrange deflection plate, strengthened the convective heat-transfer coefficient between air and flue gas, when improving the heating furnace heat transfer efficiency, shortened the length of pipe and housing; A large amount of steel have been practiced thrift; According to different working temperatures, each section pressure-air heater is selected the different metallic material for use, selects heat resisting steel for use like high temperature section; Low-temperature zone is selected carbon steel for use, has practiced thrift manufacturing cost; The fume side of each section pan shell type heating surface connects through connecting flue 15, and connection flue 15 is provided with expansion joint 14; The working medium side of each section pressure-air heater is connected through air tube connector 10, and is equipped with heat exchanger tube 11 in the heating surface of each section pressure-air heater, and exhaust gases passes and pressure-air passage are separated, and flue gas is walked tube side, and pressure-air is walked shell side.Low-temperature zone pressure-air heater 5 upper ends link to each other with the personal air preheater 6 of shell-and-tube; Personal air preheater 6 both sides of shell-and-tube are respectively equipped with personal air intake and personal air outlet slit; The personal air outlet slit of personal air preheater 6 one sides of shell-and-tube and the personal air intake of burner 1 are connected through personal air communication pipe 13, and the use by oneself personal air intake (among the figure shown in a) of air preheater 6 opposite sides of shell-and-tube communicates with pressure fan 20 through pipeline.The upper fixed of the personal air preheater 6 of shell-and-tube has chimney 8, and chimney 8 is provided with flue gas recirculation interface 7, and flue gas recirculation interface 7 is connected through the flue gas recirculation tube connector with flue gas recycled mixing chamber 17.Crackle takes place in order to prevent that high temperature arrival end shell tube sheet from concentrating because of thermal stress; On burner 1, adiabatic combustion stove 2, expansion joint 14 and the tube sheet that is connected flue 15, all lay castable refractory 16; Thereby formation flame retardant coating; And install the heat-stable ceramic protective casing additional in high temperature section heat exchanger tube porch, and being equipped with heat-insulation layer 9 in the hull outside of high temperature section pressure-air heater 3, middle-temperature section pressure-air heater 4 and low-temperature zone pressure-air heater 5, insulation material adopts alumina silicate fiber felt.Personal air cross over pipe 13, pressure-air are imported and exported b, c (b is the pressure-air inlet among Fig. 1, and c is the pressure-air outlet), adiabatic combustion stove 2 and exit thereof and are equipped with temperature sensor interface.
The workflow of HTHP air-heating furnace of the present invention is: fuel gets into adiabatic combustion stove 2 by burner 1 and burns; The high-temperature flue gas that produces with get into high temperature section pressure-air heater 3, middle-temperature section pressure-air heater 4, low-temperature zone pressure-air heater 5, the personal air preheater 6 of shell-and-tube and chimney 8 successively after flue gas recycled mixes, mix with the high-temperature flue gas of adiabatic combustion stove 2 generations by flue gas recirculation interface 7 entering flue gas recycled mixing chambers 17 through the part of smoke of chimney 8; Meanwhile; Pressure-air at first gets in the low-temperature zone pressure-air heater 5 and is heated; Enter into 4 heating of middle-temperature section pressure-air heater through air tube connector 10 then, enter into 3 heating of high temperature section pressure-air heater through air tube connector 10 again, behind three sections pressure-air heaters; Pressure-air is heated to more than 500 ℃ by normal temperature, and the final task equipments such as HTHP air output coal supply gasification furnace that produce use.
The above; Be merely the preferable specific embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical staff who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (9)
1. HTHP air-heating furnace; Comprise steelframe (18); It is characterized in that: heating furnace main body and adiabatic combustion stove (2) are housed on the said steelframe (18); Said adiabatic combustion stove (2) below is provided with burner (1), and a side of said burner (1) is provided with personal air intake, and said adiabatic combustion stove (2) top is fixed with said heating furnace main body; Said heating furnace main body mainly adopts multistage pan shell type convection heating surface structure; Be followed successively by high temperature section pressure-air heater (3), middle-temperature section pressure-air heater (4) and low-temperature zone pressure-air heater (5) from down to up; The working medium side of said high temperature section pressure-air heater (3), middle-temperature section pressure-air heater (4) and low-temperature zone pressure-air heater (5) is connected through air tube connector (10), and said high temperature section pressure-air heater (3), middle-temperature section pressure-air heater (4) and low-temperature zone pressure-air heater (5) fume side of heating surface separately are connected through being connected flue (15); Said low-temperature zone pressure-air heater (5) upper end links to each other with the personal air preheater (6) of shell-and-tube; The use by oneself upper fixed of air preheater (6) of said shell-and-tube has chimney (8); Said shell-and-tube air preheater (6) both sides of using by oneself are respectively equipped with personal air intake and personal air outlet slit; The personal air outlet slit of personal air preheater (6) one sides of said shell-and-tube and the personal air intake of said burner (1) are connected through the air communication pipe (13) of using by oneself, and the use by oneself personal air intake of air preheater (6) opposite side of said shell-and-tube is connected with pressure fan (20) through pipeline.
2. HTHP air-heating furnace according to claim 1 is characterized in that: said connection flue (15) is provided with expansion joint (14).
3. HTHP air-heating furnace according to claim 2 is characterized in that: said burner (1), said adiabatic combustion stove (2), said expansion joint (14) and the said flue (15) that is connected are all laid castable refractory (16).
4. HTHP air-heating furnace according to claim 1; It is characterized in that: be equipped with heat exchanger tube (11) in the heating surface of said high temperature section pressure-air heater (3), middle-temperature section pressure-air heater (4) and low-temperature zone pressure-air heater (5); Exhaust gases passes and pressure-air passage are separated; Flue gas is walked tube side, and pressure-air is walked shell side.
5. HTHP air-heating furnace according to claim 1 is characterized in that: said high temperature section pressure-air heater (3), middle-temperature section pressure-air heater (4) and low-temperature zone pressure-air heater (5) all adopt the pan shell type structure.
6. according to claim 1 or 5 described HTHP air-heating furnaces, it is characterized in that: be equipped with deflection plate (12) in the shell side of said high temperature section pressure-air heater (3), middle-temperature section pressure-air heater (4) and low-temperature zone pressure-air heater (5).
7. HTHP air-heating furnace according to claim 1; It is characterized in that: the hull outside of said high temperature section pressure-air heater (3), middle-temperature section pressure-air heater (4) and low-temperature zone pressure-air heater (5) is equipped with heat-insulation layer (9), and the material of said heat-insulation layer (9) is an alumina silicate fiber felt.
8. HTHP air-heating furnace according to claim 1; It is characterized in that: the high-temperature flue gas exit of said adiabatic combustion stove (2) is provided with flue gas recycled mixing chamber (17); Said chimney (8) is provided with flue gas recirculation interface (7), and said flue gas recirculation interface (7) and said flue gas recycled mixing chamber (17) are connected through the flue gas recirculation tube connector.
9. HTHP air-heating furnace according to claim 1 is characterized in that: also be provided with manhole (19) on the said adiabatic combustion stove (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100616777A CN102607168A (en) | 2012-03-09 | 2012-03-09 | High-temperature high-pressure air heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100616777A CN102607168A (en) | 2012-03-09 | 2012-03-09 | High-temperature high-pressure air heating furnace |
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| CN102607168A true CN102607168A (en) | 2012-07-25 |
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| CN2012100616777A Pending CN102607168A (en) | 2012-03-09 | 2012-03-09 | High-temperature high-pressure air heating furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865567A (en) * | 2012-10-09 | 2013-01-09 | 大连科林能源工程技术开发有限公司 | Integrated gasification combined cycle (IGCC) process gas waste heat boiler |
| CN115149030A (en) * | 2022-08-09 | 2022-10-04 | 广东佛燃科技有限公司 | Gas electric heating device for solid oxide galvanic pile test |
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| RU2347991C1 (en) * | 2007-07-26 | 2009-02-27 | Олег Савельевич Кочетов | Impulse 6 type installation for drying and heat treatment of catalysts |
| CN101408308A (en) * | 2008-11-24 | 2009-04-15 | 宁波怡诺能源科技有限公司 | Coal-burning boiler |
| CN201615598U (en) * | 2009-03-23 | 2010-10-27 | 李秉公 | Horizontal type coal-fired hot blast furnace |
| CN201909551U (en) * | 2011-02-22 | 2011-07-27 | 刘智泉 | Flue gas waste heat-recycling high-efficient heat treatment furnace |
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2012
- 2012-03-09 CN CN2012100616777A patent/CN102607168A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2152182Y (en) * | 1993-02-03 | 1994-01-05 | 刘仁勇 | Tube changeable combined hot wind furnace |
| RU2218525C2 (en) * | 2001-03-19 | 2003-12-10 | Чащин Владимир Петрович | Chamber-type fire air-heater |
| CN2473533Y (en) * | 2001-03-20 | 2002-01-23 | 于绍文 | Strong wind warm blast furnace |
| RU2347991C1 (en) * | 2007-07-26 | 2009-02-27 | Олег Савельевич Кочетов | Impulse 6 type installation for drying and heat treatment of catalysts |
| CN101408308A (en) * | 2008-11-24 | 2009-04-15 | 宁波怡诺能源科技有限公司 | Coal-burning boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865567A (en) * | 2012-10-09 | 2013-01-09 | 大连科林能源工程技术开发有限公司 | Integrated gasification combined cycle (IGCC) process gas waste heat boiler |
| CN102865567B (en) * | 2012-10-09 | 2014-07-16 | 大连科林能源工程技术开发有限公司 | Integrated gasification combined cycle (IGCC) process gas waste heat boiler |
| CN115149030A (en) * | 2022-08-09 | 2022-10-04 | 广东佛燃科技有限公司 | Gas electric heating device for solid oxide galvanic pile test |
| CN115149030B (en) * | 2022-08-09 | 2023-05-02 | 广东佛燃科技有限公司 | Gas electric heating device for solid oxide electric pile test |
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Application publication date: 20120725 |