CN202208707U - Process burner of water-coal-slurry gasification furnace - Google Patents
Process burner of water-coal-slurry gasification furnace Download PDFInfo
- Publication number
- CN202208707U CN202208707U CN2011203567631U CN201120356763U CN202208707U CN 202208707 U CN202208707 U CN 202208707U CN 2011203567631 U CN2011203567631 U CN 2011203567631U CN 201120356763 U CN201120356763 U CN 201120356763U CN 202208707 U CN202208707 U CN 202208707U
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- shower nozzle
- oxygen
- coal slurry
- process burner
- coal
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Abstract
The utility model relates to a process burner of a water-coal-slurry gasification furnace, which comprises an outer nozzle for supplying oxygen to be circulated, and a middle nozzle arranged in the outer nozzle and used for supplying water coal slurry to be circulated, wherein the middle nozzle is provided with an oxygen guide part communicated with an outer nozzle chamber and used for guiding oxygen in the outer nozzle cavity into a middle nozzle cavity, the oxygen guide part is formed by a plurality of guide holes and a buffer ring, the guide holes are communicated with the outer nozzle cavity and the buffer ring, and the buffer ring is communicated with the middle nozzle cavity. Through the design of the structure, partial oxygen in the outer nozzle is guided into the middle nozzle cavity, thus an oxygen layer is formed near the inner wall of the middle nozzle, the functions of preventing the water coal slurry flowing through the middle nozzle from being in direct contact with the inner wall of the middle nozzle cavity and further achieving the purpose of reducing abrasion of the water coal slurry to the inner wall (inner cavity) of the middle nozzle cavity are obtained, so that the maintenance period due to the abrasion of the middle nozzle cavity is prolonged, investment and operation costs are reduced, and especially operation cost is remarkably reduced.
Description
Technical field
The utility model relates to a kind of coal slurry gasifier process burner.
Background technology
The vapourizing furnace process burner head construction that generally adopts at present is as shown in Figure 1, and the factor that the design demand of burner is considered has following:
(1) structure formation: be concentric three sleeve pipes; Be outer shower nozzle (outer oxygen pipe) 1, middle shower nozzle (coal water slurry pipe) 2 and interior shower nozzle (central oxygen pipe) 3 from outside to inside successively; The outlet of burner central oxygen pipe 3 is designed to the reducing form; Purpose is that central oxygen is quickened, and its end face has certain retraction amount with respect to burner end standard face simultaneously, forms the pre-mixing chamber 4 of a coal water slurry and central oxygen like this; The export pipeline of coal water slurry also is designed to the reducing form, makes the coal water slurry that gets into pre-mixing chamber 4 possess certain speed.In pre-mixing chamber 4, utilize central oxygen that coal water slurry is diluted and acceleration just, improve the rheological property of coal water slurry, its objective is in order to guarantee the atomizing effect of coal water slurry after leaving burner.The retraction amount of the outer oxygen mouth of pipe is bigger, and purpose provides the more oxygen of high flow rate, makes the coal water slurry mixture through pre-mixing chamber 4 carry out good atomizing, so that in vapourizing furnace, reach good gasification result.
(2) circulation passage: no matter be central oxygen, or the circulation area of coal water slurry and outer oxygen, all need satisfy the traffic requirement of medium separately.Under the situation that supply pressure allows, strive reaching good mixing and atomizing effect.But the ratio of central oxygen has certain restriction, is generally 5%～25% of total oxygen demand, and all the other are all as outer oxygen.The central oxygen amount can not be too little, not so do not reach dilution and booster action to coal slurry.The central oxygen amount can not be too big, and on the one hand, too conference increases too much the mixture velocity in pre-mixing district 4, causes the wearing and tearing in central oxygen pipe 3 exits to increase the weight of, and reduces the continuous work-ing life of burner; On the other hand, when the central oxygen amount increases, the axial velocity component of burner outlet material is increased; Radial velocity component reduces, and consequently makes the flame of whole burner outlet become elongated, can't mate with the inner profile of vapourizing furnace; Cause larger-diameter pulverized coal particle to shorten at the gasification residing time in furnace, the carbon content in the slag increases, and causes that gasification efficiency reduces; And, can make flame fling furnace bottom, influence the work of furnace bottom chilling ring.
(3) flow velocity: the exit velocity of central oxygen is generally 150～180m/s, and the coal slurry exit velocity is generally 2～4m/s, and pre-mixing chamber outlet mean flow rate is generally 12～20m/s, and the exit velocity of outer oxygen is generally 160～200m/s.
According to the production practical situation of the experience of being engaged in the development of coal slurry gasifier process burner for many years and industriallization operation, it is that cooling water coil 5 damages that the damage mode of coal slurry gasifier process burner mainly contains three kinds; Middle shower nozzle 2 physics abrasion; Heat, chemistry, stress make outer shower nozzle 1 impaired.
The utility model content
The purpose of the utility model is through the improvement to existing coal slurry gasifier process burner, reduces the physical abrasion of centering nozzle cavity, strengthens its antiwear property, thereby reduces the number of times of shutdown maintenance and maintenance, and then reduces investment cost and working cost.
In order to achieve the above object; The utility model provides a kind of coal slurry gasifier process burner; The outer shower nozzle and the middle shower nozzle that is arranged on the water supply coal slurry circulation in this outer shower nozzle that comprise the oxygen supply air communication; It is characterized in that shower nozzle is provided with being used for the oxygen importing portion in the importing of the oxygen in the outer shower nozzle chamber shower nozzle chamber of communicating with outer shower nozzle chamber in this, this importing portion is made up of a plurality of entrance holes and buffering ring; A plurality of entrance holes are communicated with outer shower nozzle chamber and buffering ring, and buffering ring communicates with middle shower nozzle chamber.
Above-mentioned a plurality of entrance hole is 4～8.
Shower nozzle circumferentially evenly is provided with in above-mentioned a plurality of entrance holes edge.
Buffering ring is formed by the concave inward structure of each position of a plurality of entrance holes of next-door neighbour of middle shower nozzle.
The coal slurry gasifier process burner also comprises interior shower nozzle, and the outlet of interior shower nozzle is the reducing form.The end face of interior shower nozzle has certain retraction amount with respect to burner end standard face, thereby forms coal water slurry and from a pre-mixing chamber of the oxygen of interior shower nozzle.The outlet of middle shower nozzle is designed to the form of reducing.The outer periphery of outer shower nozzle is equipped with cooling water coil.
The beneficial effect of the utility model is: through this kind structure Design; Realized the partial oxygen conductance in the outer shower nozzle is gone in the middle shower nozzle chamber; Thereby near middle shower nozzle inwall, form an oxygen layer; Play stop flow through in the coal water slurry of shower nozzle contact with the direct of middle shower nozzle chamber inner wall, and then reach the effect of the wearing and tearing that reduce coal water slurry centering shower nozzle chamber inner wall (inner chamber), with prolong because of in the nozzle cavity maintenance intervals that weares and teares and cause; The reduction that reduces investment and working cost, especially working cost is particularly evident.
Description of drawings
Fig. 1 is existing coal slurry gasifier process burner diagrammatic cross-section.
Fig. 2 is improved coal slurry gasifier process burner diagrammatic cross-section.
Fig. 3 is the diagrammatic cross-section along the line X shown in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is carried out detailed description.
Referring to Fig. 2; The structure formation of improved coal slurry gasifier process burner is similarly concentric three sleeve pipes; Promptly be outer shower nozzle (outer oxygen pipe) 1, middle shower nozzle (coal water slurry pipe) 2 and interior shower nozzle (central oxygen pipe) 3 from outside to inside successively, in other words, outer shower nozzle is made up of outer oxygen pipe; Middle shower nozzle is made up of the coal water slurry pipe, and interior shower nozzle is made up of the central oxygen pipe.The outlet of interior shower nozzle (central oxygen pipe) 3 still is the reducing form; Purpose is that central oxygen is quickened; Its end face has certain retraction amount with respect to burner end standard face simultaneously; Form the pre-mixing chamber 4 of a coal water slurry and central oxygen like this, the export pipeline of coal water slurry (outlet of shower nozzle promptly) also is designed to the form of reducing, makes the coal water slurry that gets into pre-mixing chamber 4 possess certain speed.Outer shower nozzle (outer oxygen pipe) 1 periphery still is provided with cooling water coil 5.
Improvement to existing coal slurry gasifier process burner; Mainly be in order to reduce the physical abrasion of centering shower nozzle in the operational process (coal water slurry pipe) 2 inner chambers, to strengthen its antiwear property, thereby reduce the number of times of shutdown maintenance and maintenance; And then minimizing investment cost and working cost; For this reason, the utility model improves on the basis of existing coal slurry gasifier process burner, in shower nozzle (coal water slurry pipe) 2 in the importing of the oxygen in the outer shower nozzle (outer oxygen pipe) 1; So that near middle shower nozzle (coal water slurry pipe) 2 chamber inner walls, form an oxygen layer; Thereby stop the coal water slurry of the middle shower nozzle (coal water slurry pipe) 2 of flowing through to contact, and then reach the effect of the wearing and tearing that reduce coal water slurry centering shower nozzle (coal water slurry pipe) 2 chamber inner walls (inner chamber) with the direct of middle shower nozzle chamber inner wall, with prolong because of in shower nozzle (coal water slurry pipe) the 2 inner chambers maintenance intervals that weares and teares and cause; Reduce the reduction of investment and working cost, especially working cost.
For this reason, on middle shower nozzle (coal water slurry pipe) 2, set up an importing portion, this importing portion is made up of with buffering ring 7 a plurality of entrance holes 6, and buffering ring is formed by the concave inward structure of each position of a plurality of entrance holes of next-door neighbour of middle shower nozzle.Each entrance hole 6 is communicated with outer shower nozzle (outer oxygen pipe) 1 chamber and buffering ring 7, and buffering ring 7 communicates with middle shower nozzle (coal water slurry pipe) 2 chambers.So; Just realize the partial oxygen conductance in the outer shower nozzle (outer oxygen pipe) 1 is gone in the chamber of middle shower nozzle (coal water slurry pipe) 2; Thereby near the chamber inner wall of middle shower nozzle (coal water slurry pipe) 2, form an oxygen layer; Reach and stop the coal water slurry of the middle shower nozzle (coal water slurry pipe) 2 of flowing through to contact, and then reach the effect of the wearing and tearing of reduction coal water slurry centering shower nozzle (coal water slurry pipe) 2 chamber inner walls (inner chamber) with middle shower nozzle (coal water slurry pipe) the direct of 2 chamber inner walls.
In order to ensure the import volume of oxygen, it is 4～8 that a plurality of entrance holes 6 preferably are provided with, and along in shower nozzle (coal water slurry pipe) 2 circumferentially evenly be provided with best.As shown in Figure 3, shower nozzle (coal water slurry pipe) 2 circumferentially evenly is provided with in 4 exemplary entrance holes edges.
Although the various embodiments of the utility model are described in context through embodiment, the utility model is not limited in this.Therefore, it is the restriction of the utility model scope that above description should be used as, and the scope of the utility model is limited appended claim.It will be appreciated by those skilled in the art that under the situation of the spirit that does not deviate from the utility model and can make various changes and change to the utility model, it all will fall within the protection domain of the utility model.
Claims (8)
1. coal slurry gasifier process burner; The outer shower nozzle and the middle shower nozzle that is arranged on the water supply coal slurry circulation in the said outer shower nozzle that comprise the oxygen supply air communication; It is characterized in that: shower nozzle is provided with being used for the oxygen importing portion in the importing of the oxygen in the said outer shower nozzle chamber shower nozzle chamber of communicating with outer shower nozzle chamber in said; Said oxygen importing portion is made up of a plurality of entrance holes and buffering ring; Said a plurality of entrance hole is communicated with said outer shower nozzle chamber and said buffering ring, and said buffering ring communicates with said middle shower nozzle chamber.
2. coal slurry gasifier process burner according to claim 1 is characterized in that: said a plurality of entrance holes are 4～8.
3. coal slurry gasifier process burner according to claim 1 and 2 is characterized in that: said a plurality of entrance holes circumferentially evenly are provided with along said middle shower nozzle.
4. coal slurry gasifier process burner according to claim 1 is characterized in that: said buffering ring is formed by the concave inward structure of each position of the said a plurality of entrance holes of next-door neighbour of shower nozzle in said.
5. according to each described coal slurry gasifier process burner in the claim 1,2 and 4, it is characterized in that: said coal slurry gasifier process burner also comprises interior shower nozzle, and the outlet of said interior shower nozzle is the reducing form.
6. coal slurry gasifier process burner according to claim 5 is characterized in that: the end face of shower nozzle has certain retraction amount with respect to burner end standard face in said, thereby forms coal water slurry and from a pre-mixing chamber of the oxygen of shower nozzle in said.
7. according to each described coal slurry gasifier process burner in the claim 1,2 and 4, it is characterized in that: the outlet of shower nozzle is designed to the reducing form in said.
8. according to each described coal slurry gasifier process burner in the claim 1,2 and 4, it is characterized in that: the outer periphery of said outer shower nozzle is equipped with cooling water coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203567631U CN202208707U (en) | 2011-09-21 | 2011-09-21 | Process burner of water-coal-slurry gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203567631U CN202208707U (en) | 2011-09-21 | 2011-09-21 | Process burner of water-coal-slurry gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202208707U true CN202208707U (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203567631U Expired - Lifetime CN202208707U (en) | 2011-09-21 | 2011-09-21 | Process burner of water-coal-slurry gasification furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202208707U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107418633A (en) * | 2017-07-19 | 2017-12-01 | 新奥科技发展有限公司 | A kind of nozzle, gasification furnace and catalysis gasification method |
| CN109810729A (en) * | 2019-03-01 | 2019-05-28 | 中国东方电气集团有限公司 | A kind of integrated water/oil/coke/coal slurry process burner with air film protection |
-
2011
- 2011-09-21 CN CN2011203567631U patent/CN202208707U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107418633A (en) * | 2017-07-19 | 2017-12-01 | 新奥科技发展有限公司 | A kind of nozzle, gasification furnace and catalysis gasification method |
| CN107418633B (en) * | 2017-07-19 | 2020-10-27 | 新奥科技发展有限公司 | Nozzle, gasification furnace and catalytic gasification method |
| CN109810729A (en) * | 2019-03-01 | 2019-05-28 | 中国东方电气集团有限公司 | A kind of integrated water/oil/coke/coal slurry process burner with air film protection |
| CN109810729B (en) * | 2019-03-01 | 2019-10-15 | 中国东方电气集团有限公司 | A kind of integrated water/oil/coke/coal slurry process burner with air film protection |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120502 |