CN104560211A - Gasification furnace - Google Patents
Gasification furnace Download PDFInfo
- Publication number
- CN104560211A CN104560211A CN201510032686.7A CN201510032686A CN104560211A CN 104560211 A CN104560211 A CN 104560211A CN 201510032686 A CN201510032686 A CN 201510032686A CN 104560211 A CN104560211 A CN 104560211A
- Authority
- CN
- China
- Prior art keywords
- inner chamber
- oxygen carrier
- air distribution
- distribution plate
- vapourizing furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002309 gasification Methods 0.000 title abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000001301 oxygen Substances 0.000 claims abstract description 94
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 94
- 238000009826 distribution Methods 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 21
- 239000003245 coal Substances 0.000 claims abstract description 13
- 239000002817 coal dust Substances 0.000 claims description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000005516 engineering process Methods 0.000 claims description 12
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000003063 flame retardant Substances 0.000 claims description 11
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 30
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 125000004430 oxygen atom Chemical group O* 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/482—Gasifiers with stationary fluidised bed
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0973—Water
- C10J2300/0976—Water as steam
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses a gasification furnace which is used for preparing synthesis gas by virtue of a coal chemical bond oxygen carrier. The gasification furnace comprises a shell, an air distribution plate and a heating device, wherein the heating device is positioned inside the shell, the air distribution plate is positioned in the middle of the shell, an inner cavity of the shell is divided by the air distribution plate into a first inner cavity and a second inner cavity, the first inner cavity is communicated with a coal powder and oxygen carrier inlet pipe, a synthesis gas outlet pipe, an oxygen carrier outlet pipe and an oxygen carrier return pipe, the second inner cavity is communicated with a vapor inlet pipe, and the air distribution plate is provided with an air cap which is used for enabling vapor to flow into the second inner cavity from the first inner cavity. According to the gasification in the device, fuel does not need to be contacted with oxygen, oxygen atoms are transferred to the fuel through the oxygen carrier, so that the oxygen purifying process is avoided, the cost is efficiently saved, the burning process is not needed in the reaction, and energy is efficiently saved.
Description
Technical field
The present invention relates to gasification field, particularly relate to a kind of vapourizing furnace and coal gasification method.
Background technology
Gasification is a thermochemical process, with coal or coal tar for raw material, make vaporized chemical with oxygen (air, oxygen enrichment or pure oxygen), water vapour or hydrogen etc., by chemical reaction, the combustible portion in coal or coal tar is converted into the process of geseous fuel under the high temperature conditions.
Coal gasifying process is one of main path producing synthetic gas product, by gasification, solid-state coal is changed into the synthetic gas of gaseous state, simultaneously the byproduct such as byproduct steam, tar (indivedual gasification technology), lime-ash.Coal gasification process technology is divided into: fixed bed gasification technology, fluidized-bed gasification technology, entrained flow bed gasification technology three major types, various gasification technology all has its respective relative merits, all have certain requirement to the quality of feed coal, advance, the technology maturation degree of its technique are also variant.
Coal gasifier conventional in industry is normally by coal dust and oxygen (air, oxygen enrichment or pure oxygen) burning, generate the synthetic gas of gaseous state, the oxygen purity of usual participation reaction is higher, the synthetic gas generated more meets the requirements, in industrial production, if the oxygen that working concentration is lower participates in reaction, the concentration of carbon monoxide and hydrogen in the gas mixture of generation can be affected, in order to improve the concentration of carbon monoxide and hydrogen in synthetic gas, need air separation, extract the higher oxygen of concentration and participate in reaction, but the process cost of oxygen purification is high, and synthetic gas is when preparing, the process of burning can consume the more energy.
Therefore, how effectively reducing cost prepared by synthetic gas, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of vapourizing furnace, this device effectively reduces cost prepared by synthetic gas.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of vapourizing furnace, synthetic gas technology is prepared for coal chemistry chain oxygen carrier, comprise housing, air distribution plate and heating unit, described heating unit is positioned at the inside of described housing, described air distribution plate is positioned at the mid-way of described housing and the inner chamber of described housing is divided into the first inner chamber and the second inner chamber, described first inner chamber and coal dust and oxygen carrier inlet tube, syngas outlet pipe, oxygen carrier outlet pipe is communicated with oxygen carrier revert pipe, described second inner chamber is communicated with steam entry pipe, described air distribution plate is provided with water vapour can be made to flow into the blast cap of described second inner chamber by described first inner chamber.
Preferably, the inwall of described housing is provided with flame retardant coating, and the inwall of described flame retardant coating is provided with silica glass inwall, and described heating unit embeds the inside of described flame retardant coating, and the edge of described air distribution plate embeds in described silica glass inwall.
Preferably, described first inner chamber is provided with the first baffle plate for changing coal dust and oxygen carrier flow direction and second baffle, and described first baffle plate is fixedly mounted on described silica glass inwall, and described second baffle is fixedly mounted on described air distribution plate.
Preferably, described first baffle plate is silica glass baffle plate, and described second baffle is high temperature steel baffle plate.
Preferably, described blast cap is cylindric, the circumferential direction of described blast cap is provided with through hole, the bearing of trend of described through hole becomes 80 ° to 85 ° angles with the axis direction of described blast cap, described through hole is provided with 1-3 layer along the axis direction of described blast cap, the number of every layer of described through hole is 3, and the circumference of every layer of described through hole all along described blast cap is evenly distributed, and the aperture of described through hole is 4mm to 6mm.
Preferably, the axis direction of described coal dust and oxygen carrier inlet tube becomes 50 ° to 70 ° angles with the axis direction of described housing, and the axis direction of described oxygen carrier outlet pipe becomes 35 ° to 55 ° angles with the axis direction of described housing.
Preferably, described air distribution plate is connected with the scum pipe for making dust granule discharge described first inner chamber.
Preferably, described heating unit is globars heating unit, and described heating unit is column, and the axis direction of described heating unit is parallel with the axis direction of described housing.
Preferably, described housing comprises the upper casing and lower casing that are connected by flange, and described upper casing and described lower casing all have U-type groove, the U-type groove of described upper casing and described air distribution plate form described first inner chamber, and the U-type groove of described lower casing and described air distribution plate form described second inner chamber.
Preferably, described air distribution plate is also provided with refractory mortar near the side of described first inner chamber.
Vapourizing furnace provided by the present invention, comprise housing, air distribution plate and heating unit, described heating unit is positioned at the inside of described housing, described air distribution plate is positioned at the mid-way of described housing and the inner chamber of described housing is divided into the first inner chamber and the second inner chamber, described first inner chamber and coal dust and oxygen carrier inlet tube, syngas outlet pipe, oxygen carrier outlet pipe are communicated with oxygen carrier revert pipe, described second inner chamber is communicated with steam entry pipe, described air distribution plate is provided with water vapour can be made to flow into the blast cap of described second inner chamber by described first inner chamber.Coal dust and oxygen carrier enter described first inner chamber of this vapourizing furnace through described coal dust and oxygen carrier inlet tube, water vapour enters the second inner chamber of this vapourizing furnace through described steam entry pipe, water vapour continues through described blast cap and flows into described first inner chamber, coal dust, oxygen carrier and water vapour are in described first inner chamber mixing, heating unit is the heating of this device, oxygen carrier and coal dust are under the rheomorphism of water vapour, carry out gasification reaction, Sauerstoffatom in air is supplied to coal dust by oxygen carrier, the oxygen carrier losing Sauerstoffatom is flowed out by oxygen carrier outlet pipe, again Sauerstoffatom is obtained with air reaction, again enter described first inner chamber by oxygen carrier revert pipe, gasification reaction in this vapourizing furnace generates with H
2, CO is the synthetic gas of main component.The gasification reaction carried out in this device, Sauerstoffatom, without the need to contacting, is passed to fuel by oxygen carrier by fuel and oxygen, avoids the process of oxygen purification, can be effectively cost-saving, and meanwhile, this reaction, without the need to combustion processes, has effectively saved the energy.
In a preferred embodiment, the first part of described housing is provided with the first baffle plate and second baffle, and described first baffle plate is fixedly mounted on described silica glass inwall, and described second baffle is fixedly mounted on described air distribution plate.After coal dust and oxygen carrier enter described first inner chamber by described coal dust and oxygen carrier inlet tube, be arranged so that coal dust and the oxygen carrier of described first baffle plate and described second baffle can the flowings of fluidized baffling, sufficient and water vapour reacts, and the gasification reaction avoiding coal dust, oxygen carrier and water vapour is insufficient.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of vapourizing furnace provided by the present invention;
Fig. 2 is the A-A of vapourizing furnace shown in Fig. 1 schematic cross-section;
Fig. 3 is the schematic top plan view of vapourizing furnace shown in Fig. 1;
Fig. 4 is the air distributor structure schematic diagram of a kind of embodiment of vapourizing furnace shown in Fig. 1;
Fig. 5 is the cap structure schematic diagram of a kind of embodiment of vapourizing furnace shown in Fig. 1;
Fig. 6 is the vertical view of the cap structure of a kind of embodiment of vapourizing furnace described in Fig. 1.
Embodiment
Core of the present invention is to provide a kind of vapourizing furnace, can effectively reduce cost prepared by synthetic gas.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of vapourizing furnace provided by the present invention.
In a kind of embodiment, this vapourizing furnace comprises housing 1, air distribution plate 9 and heating unit 11.Air distribution plate 9 is positioned at the mid-way of housing 1 and the inner chamber of housing 1 is divided into the first inner chamber 4 and the second inner chamber 10, first inner chamber 4 and coal dust and oxygen carrier inlet tube 12, syngas outlet pipe 14, oxygen carrier outlet pipe 15 are communicated with oxygen carrier revert pipe 16, and the second inner chamber 10 is communicated with steam entry pipe 13.Air distribution plate 9 is provided with blast cap 7, blast cap 7 is provided with and water vapour can be made to flow into the through hole of the second inner chamber 10 by the first inner chamber 4.Heating unit 11 is positioned at the inside of housing 1, and heating unit 11 can provide heat for the reaction in housing 1.Housing 1 is usually in horizontal cylindrical, use carbon steel material is made, in addition, in order to ensure that oxygen carrier and coal dust can react fully, and utilize the internal space of this vapourizing furnace fully, coal dust and oxygen carrier inlet tube 12 lay respectively at this vapourizing furnace both sides in the axial direction with oxygen carrier outlet pipe 15.
When this gasifier system is for synthetic gas, coal dust and oxygen carrier enter the first inner chamber 4 of this vapourizing furnace through coal dust and oxygen carrier inlet tube 12, i.e. reaction chamber, water vapour sends into the second inner chamber 10 of vapourizing furnace through steam entry pipe 13, i.e. air compartment, the through hole of the blast cap 7 that water vapour connects on air distribution plate 9 sends into the reaction chamber of this vapourizing furnace.Oxygen carrier and coal dust flow under the rheomorphism of water vapour in the first inner chamber 4, and carry out gasification reaction, and coal dust, oxygen carrier and water vapour generation oxygen carrier gasification reaction generate with H
2, CO is the synthetic gas of main component.Reacted oxygen carrier and part coal ash send into lower procedure through oxygen carrier outlet pipe 15, and crude synthesis gas is then overflowed by syngas outlet pipe 14.
Lose the oxygen carrier of Sauerstoffatom by after oxygen carrier outlet pipe 15 outflow, react with the Sauerstoffatom in air and again obtain Sauerstoffatom, again the oxygen carrier obtaining Sauerstoffatom comes back to the reaction chamber of this vapourizing furnace by oxygen carrier revert pipe 16, continue as coal dust and provide Sauerstoffatom.
Namely oxygen carrier can transmit oxygen, the heat that oxidizing reaction generates can be delivered to reduction reactor again.Oxygen carrier comprises metal oxygen carrier and nonmetal oxygen carrier, the complex metal oxides that metal oxygen carrier mainly contains Ni, Fe, Co, Mn, Cu, Cd etc. and forms, and nonmetal oxygen carrier mainly contains CaSO
4, BaSO
4, SrSO
4deng vitriol oxygen carrier.
The inwall of housing 1 can also be provided with flame retardant coating 2, heating unit 11 embeds the inside of flame retardant coating 2, the inwall of flame retardant coating 2 can also be provided with silica glass inwall 3, and the edge of air distribution plate 9 embeds in silica glass inwall 3, and the gap refractory mortar between air distribution plate 9 and silica glass inwall 3 seals.Silica glass inwall 3 offers aperture, and the pressure of furnace gas is acted on flame retardant coating 2, avoids silica glass inwall 3 to bear pressure in vapourizing furnace and damaged.
As shown in Figure 4, air distribution plate 9 can also be provided with refractory mortar 18 near the side of the first inner chamber 4, and refractory mortar 18 can effective protecting cloth aerofoil 9, avoids air distribution plate 9 to suffer damage in high temperature environments.
The first plate washer 61 and second baffle 62 can also be provided with in first inner chamber 4 of this vapourizing furnace.First baffle plate 61 is fixedly mounted on silica glass inwall 3, and second baffle 62 is fixedly mounted on air distribution plate 9.First baffle plate 61 is one-body molded with silica glass inwall 3, and be silica glass material, second baffle 62 is high temperature steel material, and the number of the first baffle plate 61 and the second plate washer 61 is two, and the first baffle plate 61 is all generally perpendicular to air distribution plate with second baffle 62.After coal dust and oxygen carrier flow into reaction chamber, can under the effect of the first baffle plate 61 and second baffle 62, baffling flows, and adds oxygen carrier and the residence time of coal dust in vapourizing furnace.Here it should be noted that, the quantity of the first baffle plate 61 and second baffle 62 can set as required, is not limited to the quantity provided in the present embodiment.
As shown in Figure 5 and Figure 6, the blast cap 7 that air distribution plate 9 connects can in cylindric, the circumferential direction of blast cap 7 is provided with through hole, the bearing of trend of through hole becomes 80 ° to 85 ° angles with the axis direction of blast cap 7, through hole is provided with 1 to 3 layer (such as 2 layers) along the axis direction of blast cap 7, and the number of every layer of through hole is 3, and the circumference of every layer of through hole all along blast cap 7 is evenly distributed, namely same level through hole angle is 120 °, and through-hole aperture is 4-6mm.Height residing for through hole generally can higher than the height of the refractory mortar 18 on air distribution plate 9, therefore the bearing of trend of through hole is designed to become 80 ° to 85 ° angles with the axis direction of blast cap 7, can ensure that direction when stream of water vapor goes out blast cap 7 is for being tilted to down, can react with the coal dust and oxygen carrier being positioned at below lead to the hole site, oxygen carrier and coal dust is avoided to react insufficient, can effective save energy, and then save cost.Through hole is provided with multilayer along the axis direction of blast cap 7 can ensure the in liberal supply of water vapour, the number of every layer of through hole be three and evenly distributed along the circumference of blast cap be in order to avoid the positional symmetry of through hole causes air-flow to be detained.Certainly, other can ensure also can in number of openings that water vapour flows out smoothly, position and aperture.
The axis direction of coal dust and oxygen carrier inlet tube 12 and the axis direction of housing 1 can become 50 ° to 70 ° angles, and the axis direction of oxygen carrier outlet pipe 15 becomes 35 ° to 55 ° angles with the axis direction of housing 1.Above-mentioned setting, after can ensureing that coal dust and oxygen carrier enter reaction chamber, while the flowing of guarantee vertical direction, can also flow towards horizontal direction, oxygen carrier outlet pipe 15 is also designed to there is certain angle with the axis direction of housing 1, to ensure that oxygen carrier and coal dust can flow out smoothly, in addition, because oxygen carrier and coal dust are solid, in order to avoid oxygen carrier and coal dust are hoarded in oxygen carrier outlet pipe 15, the direction perpendicular to air distribution plate is changed into, i.e. vertical direction after oxygen carrier outlet pipe 15 can be made to tilt to extend to the middle horizontal plane of vapourizing furnace.Above-mentioned level refers to the direction with the axis being parallel of housing 1, and vertical direction refers to the direction with the axes normal of housing 1.
Air distribution plate 9 can also be connected with scum pipe 17.Scum pipe 17 is positioned at one end of the first inner chamber 4 should be concordant with refractory mortar 18, or lower than refractory mortar 18.In gasification reaction process, part oxygen carrier and coal dust can be reunited, and the oxygen carrier after reunion and coal dust discharge vapourizing furnace through scum pipe 17, avoid residue to hoard.
In order to ensure the wearing quality of the pipeline that this vapourizing furnace connects, pipeline and reaction zone connected component adopt silica glass pipeline, the pipeline be not directly connected with reaction zone is high temperature steel pipeline, two segment pipe socket joints connect, gap-fill refractory mortar seals, and above-mentioned indication pipeline comprises coal dust and oxygen carrier inlet tube 12, oxygen carrier revert pipe 16, syngas outlet pipe 14, oxygen carrier outlet pipe 15 and scum pipe 17.
As shown in Figure 2, heating unit 11 is can be globars, and heating unit 11 is in column, and the axis direction of heating unit 11 is parallel with the axis direction of housing 1.Because the gasification reaction in gas stove carries out in reaction chamber, therefore heating unit 11 is only embedded in the flame retardant coating 2 of the first cavity 4, and the length direction of globars is parallel with the axis direction of housing 1.Above-mentioned setting is the homogeneous heating in order to ensure in housing 1 in the axial direction.Certainly, the number of globars can be multiple, and multiple globars is circular arc arrangement, even to ensure in reaction chamber heats everywhere.
As shown in Figure 3, housing 1 comprises the upper casing and lower casing that are connected by flange, and upper casing and lower casing all have U-type groove, and the U-type groove of upper casing and air distribution plate 9 form the first inner chamber 4, and the U-type groove of lower casing and air distribution plate 9 form the second inner chamber 10.Flange joint can ensure stopping property and the security of housing 1.In addition, the cross section of the end socket 8 at the two ends of housing 1 can be circular or oval, end socket that is circular or oval cross section is withstand voltage effective, in addition, with bolts between upper cover and two portions end socket of lower cover, and pad is set between two portions end socket, to ensure the sealing effectiveness of housing and withstand voltage effect.The upper cover of above-mentioned indication is when this vapourizing furnace is normally placed, and housing 1 is positioned at the part of air distribution plate 9 and gravity direction opposite side, and lower cover refers to that housing 1 is positioned at the part of air distribution plate 9 and gravity direction phase the same side.
Vapourizing furnace provided by the present invention is a kind of vapourizing furnace preparing synthetic gas technology for coal chemistry chain oxygen carrier, and be a kind of fluidized-bed reactor, in reactor, material is in fluidized state.The gasification reaction carried out in this device, Sauerstoffatom, without the need to contacting, is passed to fuel by oxygen carrier by fuel and oxygen, avoids the process of oxygen purification, can be effectively cost-saving, and meanwhile, this reaction, without the need to combustion processes, has effectively saved the energy.
Operating pressure in this vapourizing furnace is 0.1-0.3MPa, and reaction chamber working temperature is 900-1200 DEG C, the following reaction of main generation:
CaSO
4+C→CaS+CO
H
2O+C→H
2+CO
H
2O+CO→H
2+CO
2
CO
2+CaO→CaCO
3
CaO+H
2S→CaS+H
2O
CaO+COS→CaS+CO
2
Above vapourizing furnace provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (10)
1. a vapourizing furnace, synthetic gas technology is prepared for coal chemistry chain oxygen carrier, it is characterized in that, comprise housing (1), air distribution plate (9) and heating unit (11), described heating unit (11) is positioned at the inside of described housing (1), described air distribution plate (9) is positioned at the mid-way of described housing (1) and the inner chamber of described housing (1) is divided into the first inner chamber (4) and the second inner chamber (10), described first inner chamber (4) and coal dust and oxygen carrier inlet tube (12), syngas outlet pipe (14), oxygen carrier outlet pipe (15) is communicated with oxygen carrier revert pipe (16), described second inner chamber (10) is communicated with steam entry pipe (13), described air distribution plate (9) is provided with water vapour can be made to flow into the blast cap (7) of described second inner chamber (10) by described first inner chamber (4).
2. vapourizing furnace according to claim 1, it is characterized in that, the inwall of described housing (1) is provided with flame retardant coating (2), the inwall of described flame retardant coating (2) is provided with silica glass inwall (3), described heating unit (11) embeds the inside of described flame retardant coating (2), and the edge of described air distribution plate (9) embeds in described silica glass inwall (3).
3. vapourizing furnace according to claim 2, it is characterized in that, described first inner chamber (4) is provided with the first baffle plate (61) for changing coal dust and oxygen carrier flow direction and second baffle (62), described first baffle plate (61) is fixedly mounted on described silica glass inwall (3), and described second baffle (62) is fixedly mounted on described air distribution plate (9).
4. vapourizing furnace according to claim 3, is characterized in that, described first baffle plate (61) is silica glass baffle plate, and described second baffle (62) is high temperature steel baffle plate.
5. vapourizing furnace according to claim 1, it is characterized in that, described blast cap (7) is in cylindric, the circumferential direction of described blast cap (7) is provided with through hole, the bearing of trend of described through hole becomes 80 ° to 85 ° angles with the axis direction of described blast cap (7), described through hole is provided with 1-3 layer along the axis direction of described blast cap (7), the number of every layer of described through hole is 3, and the circumference of every layer of described through hole all along described blast cap (7) is evenly distributed, the aperture of described through hole is 4mm to 6mm.
6. vapourizing furnace according to claim 1, it is characterized in that, the axis direction of described coal dust and oxygen carrier inlet tube (12) becomes 50 ° to 70 ° angles with the axis direction of described housing (1), and the axis direction of described oxygen carrier outlet pipe (15) becomes 35 ° to 55 ° angles with the axis direction of described housing (1).
7. vapourizing furnace according to claim 1, is characterized in that, described air distribution plate (9) is connected with the scum pipe (17) for making dust granule discharge described first inner chamber (4).
8. vapourizing furnace according to claim 1, it is characterized in that, described heating unit (11) is globars heating unit, described heating unit (11) is in column, and the axis direction of described heating unit (11) is parallel with the axis direction of described housing (1).
9. vapourizing furnace according to claim 1, it is characterized in that, described housing (1) comprises the upper casing and lower casing that are connected by flange, and described upper casing and described lower casing all have U-type groove, the U-type groove of described upper casing and described air distribution plate (9) form described first inner chamber (4), and the U-type groove of described lower casing and described air distribution plate (9) form described second inner chamber (10).
10. vapourizing furnace according to claim 1, is characterized in that, described air distribution plate (9) is also provided with refractory mortar (18) near the side of described first inner chamber (4).
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| CN107435951A (en) * | 2017-09-13 | 2017-12-05 | 兖矿集团有限公司 | A kind of energy-saving environment protection fire coal cooking and heating furnace and cooking heating method and purposes |
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