CN104611065A - Double-swirling pulverized coal spray nozzle for dry powder gasifier - Google Patents
Double-swirling pulverized coal spray nozzle for dry powder gasifier Download PDFInfo
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- CN104611065A CN104611065A CN201510018660.7A CN201510018660A CN104611065A CN 104611065 A CN104611065 A CN 104611065A CN 201510018660 A CN201510018660 A CN 201510018660A CN 104611065 A CN104611065 A CN 104611065A
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Abstract
The invention discloses a double-swirling pulverized coal spray nozzle for a dry powder gasifier. The double-swirling pulverized coal spray nozzle for the dry powder gasifier comprises a fuel gas pipe, a gasifying agent pipe, a first swirler, a second swirler and a pulverized coal pipe, wherein a fuel gas channel is formed in the fuel gas pipe, and a lower end port of the fuel gas channel is a fuel gas outlet; the fuel gas pipe is sleeved with the gasifying agent pipe, a gasifying agent channel is formed between the gasifying agent pipe and the fuel gas pipe, and a lower end port of the gasifying agent channel is a gasifying agent outlet; the first swirler is arranged in the gasifying agent channel; the second swirler is arranged outside the gasifying agent pipe in a sleeving manner, a swirling cavity is formed between the second swirler and the gasifying agent pipe, and first pulverized coal inlets are formed in the wall of the swirling cavity; the pulverized coal pipe is arranged outside the gasifying agent pipe in a sleeving manner, a pulverized coal channel is formed between the pulverized coal pipe and the gasifying agent pipe, an upper end port of the pulverized coal channel is a second pulverized coal inlet, and a lower end port of the pulverized coal channel is a pulverized coal outlet. The double-swirling pulverized coal spray nozzle for the dry powder gasifier has the advantages of simple structure, good mixing effect and the like.
Description
Technical field
The present invention relates to a kind of dry powder gasification furnace double-cyclone coal nozzle.
Background technology
Utilizing Coal Gasification Technology coal to be converted into synthetic gas is the effective way that high-efficiency cleaning utilizes coal.Vapourizing furnace is the core cell of Coal Gasification Technology.Coal dust cannot mix with vaporized chemical by the nozzle of existing vapourizing furnace well.
Summary of the invention
The application makes the discovery of the following fact and problem and understanding based on contriver:
The nozzle of vapourizing furnace decides the mixing of coal dust and vaporized chemical.The existing nozzle for vapourizing furnace sprays coal dust and vaporized chemical in the mode of coaxial jet, thus it is not good to cause coal dust to mix with vaporized chemical.And part of fuel forms short circuit, is directly sprayed outside vapourizing furnace, reduces the transformation efficiency of fuel.In addition, the swirl strength of the air-flow of existing nozzle ejection is lower, thus causes furnace wall dross unfavorable.
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention proposes a kind of dry powder gasification furnace double-cyclone coal nozzle with the advantage of good mixing effect.
Dry powder gasification furnace double-cyclone coal nozzle according to the embodiment of the present invention comprises: fuel gas pipe, has fuel gas passageway in described fuel gas pipe, and the wall of described fuel gas passageway is provided with fuel gas inlet, and the lower port of described fuel gas passageway is fuel gas outlet; Vaporized chemical pipe, described vaporized chemical pipe box is located at the outside of described fuel gas pipe, form vaporized chemical passage between described vaporized chemical pipe and described fuel gas pipe, the wall of described vaporized chemical passage is provided with vaporized chemical import, and the lower port of described vaporized chemical passage is gasification agent outlets; First swirler, described first swirler to be located in described vaporized chemical passage and contiguous described gasification agent outlets; Second swirler, described second swirler is set in the outside of described vaporized chemical pipe, forms eddy flow chamber between described second swirler and described vaporized chemical pipe, and the wall in described eddy flow chamber is provided with the first coal dust import; And coal pipe, described coal pipe is set in the outside of described vaporized chemical pipe, coal dust channel is formed between described coal pipe and described vaporized chemical pipe, the upper port of described coal dust channel is the second coal dust import, the lower port of described coal dust channel is discharge, and the upper end of wherein said coal dust channel extend in described eddy flow chamber so that described second coal dust import is communicated with described eddy flow chamber.
There is according to the dry powder gasification furnace double-cyclone coal nozzle of the embodiment of the present invention advantage of good mixing effect.
In addition, dry powder gasification furnace double-cyclone coal nozzle according to the above embodiment of the present invention can also have following additional technical characteristic:
According to one embodiment of present invention, the diameter of the bottom of described fuel gas pipe reduces from top to bottom, the diameter of the bottom of described vaporized chemical pipe reduces from top to bottom, the diameter of the bottom of described coal pipe reduces from top to bottom, and wherein said first swirler is positioned at the top of the described bottom of described vaporized chemical pipe.
According to one embodiment of present invention, the lower edge of described vaporized chemical pipe is positioned at the below on the lower edge of described fuel gas pipe, and the lower edge of described coal pipe is positioned at the below on the lower edge of described vaporized chemical pipe.
According to one embodiment of present invention, the upper end of described fuel gas pipe is closed by the first closure plate, the upper end of described vaporized chemical pipe is closed by the second closure plate, the top of wherein said fuel gas pipe and described fuel gas inlet stretch out from the upper end of described vaporized chemical pipe, and top and the described vaporized chemical import of described vaporized chemical pipe are stretched out from the upper end of described second swirler.
According to one embodiment of present invention, described second swirler comprises: body, and described body is set in the outside of described vaporized chemical pipe, forms described eddy flow chamber between described body and described vaporized chemical pipe, and described body is provided with described first coal dust import; Cover plate, described cover plate is established on the body and is covered described eddy flow chamber, and top and the described vaporized chemical import of described vaporized chemical pipe protrude upward described cover plate; Coal dust inlet pipe, described coal dust inlet pipe is tangentially connected to described first coal dust ingress so that coal dust tangentially enters in described eddy flow chamber; With eddy flow block, described eddy flow block is located in described eddy flow chamber, and described eddy flow block is provided with tangential guide groove, and described tangential guide groove is tangentially connected with described coal dust channel.
According to one embodiment of present invention, described dry powder gasification furnace double-cyclone coal nozzle comprises lighter for ignition further, and described lighter for ignition passes described first closure plate and extend in described fuel gas passageway.
According to one embodiment of present invention, described lighter for ignition is lower to contiguous described fuel gas outlet.
According to one embodiment of present invention, described dry powder gasification furnace double-cyclone coal nozzle comprises cooling tube further, described cooling tube is set in the outside of described coal pipe, form cooling-water duct between described cooling tube and described coal pipe, the wall of described cooling-water duct is provided with water-in and water outlet.
According to one embodiment of present invention, described cooling tube comprises: interior cooling tube, described interior cooling tube is set in the outside of described coal pipe, forms inner cooling water passage between described interior cooling tube and described coal pipe, and the wall of described inner cooling water passage is provided with described water outlet; With outer cooling tube, described outer cooling tube is set in the outside of described interior cooling tube, outer cooling-water duct is formed between described outer cooling tube and described interior cooling tube, the wall of described outer cooling-water duct is provided with described water-in, the lower edge of wherein said outer cooling tube is connected with the lower edge of described coal pipe by the 3rd closure plate, and the lower edge of described interior cooling tube is positioned at the top of described 3rd closure plate.
According to one embodiment of present invention, described interior cooling tube comprises: linkage section, and the upper end of described linkage section is connected with the lower surface of described second swirler, and the lower end of described linkage section is connected with the first flange, and described linkage section is provided with described water outlet; And cooling section, the upper end of described cooling section is connected with the second flange with the upper end of described outer cooling tube, and described first flange is connected with described second flange.
According to one embodiment of present invention, described first swirler comprises multiple swirl vane, multiple described swirl vane is located on the periphery of described fuel gas pipe along the circumference of described fuel gas pipe equally spacedly, and the outer edge of each described swirl vane contacts with the inner peripheral surface of described vaporized chemical pipe.
Accompanying drawing explanation
Fig. 1 is the structural representation of the dry powder gasification furnace double-cyclone coal nozzle according to the embodiment of the present invention;
Fig. 2 is the structural representation of the eddy flow block of dry powder gasification furnace double-cyclone coal nozzle according to the embodiment of the present invention;
Fig. 3 is the sectional view of the dry powder gasification furnace double-cyclone coal nozzle according to the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings dry powder gasification furnace double-cyclone coal nozzle 10 according to the embodiment of the present invention is described.As shown in Figure 1, fuel gas pipe 101, vaporized chemical pipe 102, first swirler 103, second swirler 104 and coal pipe 105 is comprised according to the dry powder gasification furnace double-cyclone coal nozzle 10 of the embodiment of the present invention.
Have fuel gas passageway 1011 in fuel gas pipe 101, the wall of fuel gas passageway 1011 is provided with fuel gas inlet 1012, and the lower port of fuel gas passageway 1011 is fuel gas outlet 1013.Vaporized chemical pipe 102 is set in the outside of fuel gas pipe 101, vaporized chemical path 10 21 is formed between vaporized chemical pipe 102 and fuel gas pipe 101, the wall of vaporized chemical path 10 21 is provided with vaporized chemical import 1022, and the lower port of vaporized chemical path 10 21 is gasification agent outlets 1023.
First swirler 103 is located in vaporized chemical path 10 21, and the contiguous gasification agent outlets 1023 of the first swirler 103.Second swirler 104 is set in the outside of vaporized chemical pipe 102, forms eddy flow chamber 1041 between the second swirler 104 and vaporized chemical pipe 102, and the wall in eddy flow chamber 1041 is provided with the first coal dust import 1042.Coal pipe 105 is set in the outside of vaporized chemical pipe 102, forms coal dust channel 1051 between coal pipe 105 and vaporized chemical pipe 102, and the upper port of coal dust channel 1051 is the second coal dust import 1052, and the lower port of coal dust channel 1051 is discharge 1053.Wherein, the upper end of coal dust channel 1051 extend in eddy flow chamber 1041 so that the second coal dust import 1052 is communicated with eddy flow chamber 1041.
Dry powder gasification furnace double-cyclone coal nozzle 10 according to the embodiment of the present invention passes through the first swirler 103 arranging contiguous gasification agent outlets 1023 in vaporized chemical path 10 21, thus vaporized chemical can be made after the first swirler 103 to produce tangential velocity, to make vaporized chemical accelerate ejection after gasification agent outlets 1023.Dry powder gasification furnace double-cyclone coal nozzle 10 according to the embodiment of the present invention passes through to arrange second swirler 104 with the first coal dust import 1042, thus the coal dust entered in the second swirler 104 can be made to be reinforced rotation, and then coal dust is sprayed by rotation by discharge 1053.That is, can be double-cyclone Combined type powder coal gasification nozzle according to the dry powder gasification furnace double-cyclone coal nozzle 10 of the embodiment of the present invention.
The rotational flow coal dust sprayed by discharge 1053 forms two strands of eddy flows with the cyclone gas agent sprayed by gasification agent outlets 1023, and then it is staggered to form double-cyclone, thus greatly can strengthen mixing of coal dust and vaporized chemical, vaporized chemical and coal dust are mixed rapidly, effectively improve the residence time of coal dust in vapourizing furnace and the transformation efficiency of coal dust, effectively shorten the length of flame, reduce the length-to-diameter ratio of dry powder gasification furnace double-cyclone coal nozzle 10, reduce the manufacturing cost of dry powder gasification furnace double-cyclone coal nozzle 10, improve the performance of vapourizing furnace.
And; the slag of molten state can get rid of on the furnace wall of vapourizing furnace by the strong rotational gas flow produced by rotational flow coal dust and cyclone gas agent, thus decreases the content of the flying dust in synthetic gas, is convenient to the dross protection of furnace wall; improve the processing property of vapourizing furnace, alleviate the burden of synthetic gas cleaning system.
Therefore, according to the dry powder gasification furnace double-cyclone coal nozzle 10 of the embodiment of the present invention, there is the advantages such as structure is simple, good mixing effect.
As shown in Figure 1 (dotted line in Fig. 1 represents the part that each parts are blocked), fuel gas pipe 101, vaporized chemical pipe 102, coal pipe 105, first swirler 103, second swirler 104, lighter for ignition 106 and cooling tube 107 is comprised according to the dry powder gasification furnace double-cyclone coal nozzle 10 of some embodiments of the present invention.
Have fuel gas passageway 1011 in fuel gas pipe 101, the wall of fuel gas passageway 1011 is provided with fuel gas inlet 1012, and the lower port of fuel gas passageway 1011 is fuel gas outlet 1013.That is, the open at its lower end of fuel gas passageway 1011, to form fuel gas outlet 1013.Fuel gas inlet 1012 can be located on the perisporium of fuel gas passageway 1011, also can be located on the roof of fuel gas passageway 1011.Particularly, fuel gas inlet 1012 can through along the vertical direction the first closure plate 1014.
Fuel gas is injected in vapourizing furnace by fuel gas passageway 1011.Particularly, fuel gas can be Sweet natural gas or other inflammable gass.
As shown in Figure 1, the diameter of the bottom of fuel gas pipe 101 reduces from top to bottom, and namely the lower tilt ground of the wall of fuel gas passageway 1011 inwardly shrinks, to form contraction flow region, thus can improve the jet velocity of fuel gas.Wherein, above-below direction is as shown in the arrow A in Fig. 1.
The upper end of fuel gas pipe 101 is closed by the first closure plate 1014, and fuel gas inlet 1012 can be close to the upper end of fuel gas pipe 101.
As shown in Figure 1, in one embodiment of the invention, lighter for ignition 106 can pass the first closure plate 1014, and lighter for ignition 106 extend in fuel gas passageway 1011.When lighting a fire, lighter for ignition 106 produces localized hyperthermia, and pilot fuel gas, completes ignition function.Dry powder gasification furnace double-cyclone coal nozzle 10 is integrated with the function of ignition burner and technique nozzle thus, thus can reduce the nozzle quantity of vapourizing furnace.Advantageously, lighter for ignition 106 is lower to contiguous fuel gas outlet 1013.
Vaporized chemical pipe 102 is set in the outside of fuel gas pipe 101, forms vaporized chemical path 10 21 between vaporized chemical pipe 102 and fuel gas pipe 101.The wall of vaporized chemical path 10 21 is provided with vaporized chemical import 1022, and the lower port of vaporized chemical path 10 21 is gasification agent outlets 1023.Vaporized chemical import 1022 can be located on the perisporium of vaporized chemical path 10 21, can also be located on the roof of vaporized chemical path 10 21.Particularly, vaporized chemical import 1022 can through along the vertical direction the second closure plate 1024.In other words, the open at its lower end of vaporized chemical path 10 21, to form gasification agent outlets 1023.Vaporized chemical can be injected in vapourizing furnace by vaporized chemical path 10 21 when dry powder gasification furnace double-cyclone coal nozzle 10 is lighted a fire and goes into operation.
Particularly, vaporized chemical can be pure oxygen, oxygen rich gas or air.
As shown in Figure 1, the diameter of the bottom of vaporized chemical pipe 102 reduces from top to bottom, and namely the lower tilt ground of the wall of vaporized chemical path 10 21 inwardly shrinks, to form contraction flow region, thus can improve the jet velocity of vaporized chemical.The lower edge of vaporized chemical pipe 102 is positioned at the below on the lower edge of fuel gas pipe 101, and namely the lower edge of vaporized chemical path 10 21 is positioned at the below on the lower edge of fuel gas passageway 1011.
The upper end of vaporized chemical pipe 102 is closed by the second closure plate 1024, and vaporized chemical import 1022 can the upper end of adjacent gas agent pipe 102.Wherein, the top of fuel gas pipe 101 and fuel gas inlet 1012 stretch out from the upper end of vaporized chemical pipe 102.That is, the top of fuel gas pipe 101 can be upward through the second closure plate 1024, and fuel gas inlet 1012 can be positioned at the top of the second closure plate 1024.
As shown in Figure 1, in a concrete example of the present invention, fuel gas pipe 101 is provided with the first web plate 1015, first web plate 1015 and is connected with the second closure plate 1024.More easily, firmly fuel gas pipe 101 and vaporized chemical pipe 102 can be installed together thus.
First swirler 103 is located in vaporized chemical path 10 21, and the contiguous gasification agent outlets 1023 of the first swirler 103.Advantageously, the first swirler 103 is positioned at the top of the contraction flow region of vaporized chemical path 10 21, and the contraction flow region of the first swirler 103 adjacent gas agent path 10 21.Vaporized chemical produces tangential velocity after the first swirler 103, then accelerates ejection after the contraction flow region of vaporized chemical path 10 21.
Advantageously, as shown in Figure 3, first swirler 103 comprises multiple swirl vane 1031, and multiple swirl vane 1031 is located on the periphery of fuel gas pipe 101 along the circumference of fuel gas pipe 101 equally spacedly, and the outer edge of each swirl vane 1031 contacts with the inner peripheral surface of vaporized chemical pipe 102.
As shown in Figure 1, in an example of the present invention, the second swirler 104 comprises body 1043, cover plate 1044, coal dust inlet pipe 1045 and eddy flow block 1046.
Body 1043 is set in the outside of vaporized chemical pipe 102, forms eddy flow chamber 1041 between body 1043 and vaporized chemical pipe 102, and body 1043 is provided with the first coal dust import 1042.Cover plate 1044 is located on body 1043, and cover plate 1044 covers eddy flow chamber 1041.Top and the vaporized chemical import 1022 of vaporized chemical pipe 102 protrude upward cover plate 1044, and namely the top of vaporized chemical pipe 102 and vaporized chemical import 1022 are stretched out from the upper end of the second swirler 104.That is, vaporized chemical import 1022 can be positioned at the top of cover plate 1044.
Coal dust inlet pipe 1045 is tangentially connected to the first coal dust import 1042 place, so that coal dust tangentially enters in eddy flow chamber 1041.Advantageously, coal dust inlet pipe 1045 can be multiple, and the first coal dust import 1042 also can be multiple, multiple coal dust inlet pipe 1045 can be connected with multiple first coal dust import 1042 correspondingly, to make coal dust tangentially enter in eddy flow chamber 1041 more rapidly, equably.
Coal pipe 105 is set in the outside of vaporized chemical pipe 102, forms coal dust channel 1051 between coal pipe 105 and vaporized chemical pipe 102.The upper port of coal dust channel 1051 is the second coal dust import 1052, and the lower port of coal dust channel 1051 is discharge 1053.That is, the open upper end of coal dust channel 1051 is to form the second coal dust import 1052, and the open at its lower end of coal dust channel 1051 is to form discharge 1053.
The upper end of coal dust channel 1051 extend in eddy flow chamber 1041 so that the second coal dust import 1052 is communicated with eddy flow chamber 1041.Wherein, as shown in Figure 2, eddy flow block 1046 is located in eddy flow chamber 1041, and eddy flow block 1046 is provided with tangential guide groove 10461, and tangential guide groove 10461 is tangentially connected with coal dust channel 1051.That is, the coal dust in eddy flow chamber 1041 tangentially can enter in coal dust channel 1051 by tangential guide groove 10461, enters in vapourizing furnace finally by discharge 1053.
Advantageously, as shown in Figure 2, tangential guide groove 10461 can be multiple, and multiple tangential guide groove 10461 equally spaced can be arranged along the circumference of coal dust channel 1051.
As shown in Figure 1, the diameter of the bottom of coal pipe 105 reduces from top to bottom, and namely the lower tilt ground of the wall of coal dust channel 1051 inwardly shrinks, to form contraction flow region, thus can improve the jet velocity of coal dust.The lower edge of coal pipe 105 is positioned at the below on the lower edge of vaporized chemical pipe 102, and namely the lower edge of coal dust channel 1051 is positioned at the below on the lower edge of vaporized chemical path 10 21.
There is provided coal dust when dry powder gasification furnace double-cyclone coal nozzle 10 goes into operation, coal dust is carried by the carrier gas such as carbonic acid gas, nitrogen.Specifically, enter the coal dust in eddy flow chamber 1041 by the first coal dust import 1042 and enter in coal dust channel 1051 after the strengthening of eddy flow block 1046 rotates, and rotate ejection by discharge 1053.
As shown in Figure 1, in some embodiments of the invention, cooling tube 107 comprises interior cooling tube 1071 and outer cooling tube 1074.Interior cooling tube 1071 is set in the outside of coal pipe 105, forms inner cooling water path 10 72 between interior cooling tube 1071 and coal pipe 105, and the wall of inner cooling water path 10 72 is provided with water outlet 1073.Outer cooling tube 1074 is set in the outside of interior cooling tube 1071, forms outer cooling-water duct 1075 between outer cooling tube 1074 and interior cooling tube 1071, and the wall of outer cooling-water duct 1075 is provided with water-in 1076.
Wherein, the lower edge of outer cooling tube 1074 is connected with the lower edge of coal pipe 105 by the 3rd closure plate 1077.In other words, the lower end of outer cooling tube 1074 is closed by the 3rd closure plate 1077.The lower edge of interior cooling tube 1071 is positioned at the top of the 3rd closure plate 1077.That is, the lower edge of interior cooling tube 1071 is spaced apart in the vertical direction with the 3rd closure plate 1077, and the lower end of interior cooling tube 1071 is unlimited, to make inner cooling water path 10 72 and outer cooling-water duct 1075 communicate with each other.The upper end of interior cooling tube 1071 and the upper end of outer cooling tube 1074 can be closed by same closure plate, also can be closed by different closure plate.
Water coolant is entered in outer cooling-water duct 1075 by water-in 1076, and enters in inner cooling water path 10 72 from the gap between interior cooling tube 1071 and the 3rd closure plate 1077, finally discharges from water outlet 1073.Water coolant can be utilized thus to cool dry powder gasification furnace double-cyclone coal nozzle 10, reduce the temperature of dry powder gasification furnace double-cyclone coal nozzle 10, ensure that dry powder gasification furnace double-cyclone coal nozzle 10 runs continuously.
As shown in Figure 1, in a concrete example of the present invention, interior cooling tube 1071 comprises linkage section 10711 and cooling section 10712.The upper end of linkage section 10711 is connected with the lower surface of the second swirler 104, and the lower end of linkage section 10711 is connected with the first flange 1081, and linkage section 10711 is provided with water outlet 1073.Particularly, the upper end of linkage section 10711 is connected with the lower surface of body 1043, to utilize body 1043 to close the upper end of linkage section 10711.
The upper end of cooling section 10712 is connected with the second flange 1082 with the upper end of outer cooling tube 1074, and the first flange 1081 is connected with the second flange 1082.That is, utilize the second flange 1082 to be connected and close the upper end of outer cooling tube 1074.Linkage section 10711 and cooling section 10712 are linked together by the first flange 1081 and the second flange 1082.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (11)
1. a dry powder gasification furnace double-cyclone coal nozzle, is characterized in that, comprising:
Fuel gas pipe, has fuel gas passageway in described fuel gas pipe, and the wall of described fuel gas passageway is provided with fuel gas inlet, and the lower port of described fuel gas passageway is fuel gas outlet;
Vaporized chemical pipe, described vaporized chemical pipe box is located at the outside of described fuel gas pipe, form vaporized chemical passage between described vaporized chemical pipe and described fuel gas pipe, the wall of described vaporized chemical passage is provided with vaporized chemical import, and the lower port of described vaporized chemical passage is gasification agent outlets;
First swirler, described first swirler to be located in described vaporized chemical passage and contiguous described gasification agent outlets;
Second swirler, described second swirler is set in the outside of described vaporized chemical pipe, forms eddy flow chamber between described second swirler and described vaporized chemical pipe, and the wall in described eddy flow chamber is provided with the first coal dust import; With
Coal pipe, described coal pipe is set in the outside of described vaporized chemical pipe, coal dust channel is formed between described coal pipe and described vaporized chemical pipe, the upper port of described coal dust channel is the second coal dust import, the lower port of described coal dust channel is discharge, and the upper end of wherein said coal dust channel extend in described eddy flow chamber so that described second coal dust import is communicated with described eddy flow chamber.
2. dry powder gasification furnace double-cyclone coal nozzle according to claim 1, it is characterized in that, the diameter of the bottom of described fuel gas pipe reduces from top to bottom, the diameter of the bottom of described vaporized chemical pipe reduces from top to bottom, the diameter of the bottom of described coal pipe reduces from top to bottom, and wherein said first swirler is positioned at the top of the described bottom of described vaporized chemical pipe.
3. dry powder gasification furnace double-cyclone coal nozzle according to claim 1, is characterized in that, the lower edge of described vaporized chemical pipe is positioned at the below on the lower edge of described fuel gas pipe, and the lower edge of described coal pipe is positioned at the below on the lower edge of described vaporized chemical pipe.
4. dry powder gasification furnace double-cyclone coal nozzle according to claim 1, it is characterized in that, the upper end of described fuel gas pipe is closed by the first closure plate, the upper end of described vaporized chemical pipe is closed by the second closure plate, the top of wherein said fuel gas pipe and described fuel gas inlet stretch out from the upper end of described vaporized chemical pipe, and top and the described vaporized chemical import of described vaporized chemical pipe are stretched out from the upper end of described second swirler.
5. dry powder gasification furnace double-cyclone coal nozzle according to claim 1, is characterized in that, described second swirler comprises:
Body, described body is set in the outside of described vaporized chemical pipe, forms described eddy flow chamber between described body and described vaporized chemical pipe, and described body is provided with described first coal dust import;
Cover plate, described cover plate is established on the body and is covered described eddy flow chamber, and top and the described vaporized chemical import of described vaporized chemical pipe protrude upward described cover plate;
Coal dust inlet pipe, described coal dust inlet pipe is tangentially connected to described first coal dust ingress so that coal dust tangentially enters in described eddy flow chamber; With
Eddy flow block, described eddy flow block is located in described eddy flow chamber, and described eddy flow block is provided with tangential guide groove, and described tangential guide groove is tangentially connected with described coal dust channel.
6. the double-cyclone coal nozzle of the dry powder gasification furnace according to any one of claim 1-5, is characterized in that, comprise lighter for ignition further, and described lighter for ignition passes described first closure plate and extend in described fuel gas passageway.
7. dry powder gasification furnace double-cyclone coal nozzle according to claim 6, is characterized in that, the lower of described lighter for ignition exports along contiguous described fuel gas.
8. the double-cyclone coal nozzle of the dry powder gasification furnace according to any one of claim 1-5, it is characterized in that, comprise cooling tube further, described cooling tube is set in the outside of described coal pipe, form cooling-water duct between described cooling tube and described coal pipe, the wall of described cooling-water duct is provided with water-in and water outlet.
9. dry powder gasification furnace double-cyclone coal nozzle according to claim 8, it is characterized in that, described cooling tube comprises:
Interior cooling tube, described interior cooling tube is set in the outside of described coal pipe, forms inner cooling water passage between described interior cooling tube and described coal pipe, and the wall of described inner cooling water passage is provided with described water outlet; With
Outer cooling tube, described outer cooling tube is set in the outside of described interior cooling tube, outer cooling-water duct is formed between described outer cooling tube and described interior cooling tube, the wall of described outer cooling-water duct is provided with described water-in, the lower edge of wherein said outer cooling tube is connected with the lower edge of described coal pipe by the 3rd closure plate, and the lower edge of described interior cooling tube is positioned at the top of described 3rd closure plate.
10. dry powder gasification furnace double-cyclone coal nozzle according to claim 9, is characterized in that, described interior cooling tube comprises:
Linkage section, the upper end of described linkage section is connected with the lower surface of described second swirler, and the lower end of described linkage section is connected with the first flange, and described linkage section is provided with described water outlet; With
Cooling section, the upper end of described cooling section is connected with the second flange with the upper end of described outer cooling tube, and described first flange is connected with described second flange.
11. dry powder gasification furnace double-cyclone coal nozzles according to claim 1, it is characterized in that, described first swirler comprises multiple swirl vane, multiple described swirl vane is located on the periphery of described fuel gas pipe along the circumference of described fuel gas pipe equally spacedly, and the outer edge of each described swirl vane contacts with the inner peripheral surface of described vaporized chemical pipe.
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| CN201510018660.7A CN104611065B (en) | 2015-01-14 | 2015-01-14 | Double-swirling pulverized coal spray nozzle for dry powder gasifier |
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| CN105219436A (en) * | 2015-10-30 | 2016-01-06 | 新奥科技发展有限公司 | A kind of supercritical water gasification nozzle, apparatus and method |
| CN106753575A (en) * | 2016-12-30 | 2017-05-31 | 神华集团有限责任公司 | Gasification nozzle |
| CN111306538A (en) * | 2020-03-16 | 2020-06-19 | 清华大学 | Small-size cyclone pulverized coal burner for laboratory |
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| CN111306538A (en) * | 2020-03-16 | 2020-06-19 | 清华大学 | Small-size cyclone pulverized coal burner for laboratory |
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| CN104611065B (en) | 2017-02-22 |
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