CN202881207U - Pulverized coal dense-phase transporting system - Google Patents
Pulverized coal dense-phase transporting system Download PDFInfo
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- CN202881207U CN202881207U CN201220444764.6U CN201220444764U CN202881207U CN 202881207 U CN202881207 U CN 202881207U CN 201220444764 U CN201220444764 U CN 201220444764U CN 202881207 U CN202881207 U CN 202881207U
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- coal dust
- pulverized coal
- pipeline
- filter housing
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Abstract
The utility model relates to a pulverized coal dense-phase transporting system, aiming at solving the problem of frequent shut down of a gasifier due to serious fluctuation of pulverized coal flow of the prior art; the pulverized coal dense-phase transporting system comprises a charging tank, a pulverized coal pipeline and a gasifier nozzle, wherein the inlet end of the pulverized coal pipeline stretches into the charging tank, and the outlet end of the pulverized coal pipeline is connected with the gasifier nozzle; due to a filter arranged on the inlet end of the pulverized coal pipeline, large-particle materials are effectively prevented from entering into the pulverized coal pipeline, so that the mobile pulverized coal can enter into the pulverized coal pipeline in a more uniform manner; therefore, stability of the pulverized coal flow in the pulverized coal pipeline is improved, and stable operation of the gasifier is guaranteed.
Description
Technical field
The present invention relates to coal chemical technology, relate in particular to a kind of coal dust dense-phase transporting system, can guarantee the stability that coal dust is carried.
Background technology
GSP dry coal pressurized air flow bed gasification technology is to develop in recent years and drop into one of large-scale advanced gasification technology of new generation of commercialized running.Gasification technology similar with other compared, this gasification technology is because adopting gasification furnace roof dry powder to feed in raw material and the reaction chamber water wall structure, thereby at gasification furnace structure and technical process its distinctive feature is arranged, and having the oxygen consumption low, coal adapts to wide and cold gas efficiency advantages of higher.
In the GSP technology, by the coal dust dense-phase transporting system dry pulverized coal is delivered to the gasifier nozzle combustion gasification.Existing coal dust dense-phase transporting system as shown in Figure 1, comprise issuance of materials tank 1, three parallel coal dust pipelines 2 and gasifier nozzle 3, wherein the bottom of issuance of materials tank 1 adopt to be stirred fluidized plate 11 and is made powder fluidized, and the import of described coal dust pipeline 2 stretches in the issuance of materials tank 1, is positioned at fluidized plate 11 tops; The outlet of described coal dust pipeline 2 evenly is connected to gasifier nozzle 3, i.e. the outlet of three coal dust pipelines 2 evenly distributes on the circumference of these gasifier nozzle 3 ingress.
In this coal dust dense-phase transporting system, the conveying of coal dust is the top discharge mode, when the coal dust of issuance of materials tank is in fluidized state, take the pressure reduction between issuance of materials tank and vapourizing furnace as power, coal dust is sent into three coal dust pipelines, finally delivers to gasifier nozzle and reacts.But, because the import of coal dust pipeline is direct open design, when being mixed with the large particulate matters such as aggregate, iron filings, stone in the coal dust, can directly enter the coal dust pipeline, affect coal dust flow velocity and density, so that pulverized coal flow is fluctuated, when serious, even can stop up the coal dust pipeline, cause the chain jumping car of vapourizing furnace; In addition, the flow difference also can cause gasifier nozzle to occur partially burning between three coal dust pipelines, affects gasification reaction.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of coal dust dense-phase transporting system, to overcome prior art because the pulverized coal flow fluctuation causes vapourizing furnace frequently to jump the problem of car greatly, has improved the stability of dry pulverized coal feed flow.
For achieving the above object, the utility model is by the following technical solutions:
A kind of coal dust dense-phase transporting system, described system comprise issuance of materials tank, gentleization of coal dust pipeline stove burner, and the bottom of described issuance of materials tank is provided with the stirring fluidized plate; The entrance end of described coal dust pipeline stretches in the issuance of materials tank, is positioned at the fluidized plate top; The exit end of described coal dust pipeline is connected with gasifier nozzle; Wherein, described system also comprises strainer, and described strainer is arranged on the entrance end of coal dust pipeline.
Further, described strainer is comprised of filter housing and filter screen, and described filter screen is arranged on the lower end of filter housing, and the upper end of described filter housing is connected with the entrance end of pulverized coal channel.
Further, described filter housing increases from the upper end to lower end diameter.
Further, the lower end of described filter housing is 3:1-2:1 with the diameter ratio of upper end.
Further, the aperture of described filter screen is 2 ~ 10 times of coal dust median size.
Further, the outside of the edge of described filter housing upper and lower end is designed to arc.
As seen from the above technical solution, the coal dust dense-phase transporting system that the utility model provides, the inlet end of coal dust pipeline arranges strainer in the issuance of materials tank, enters the coal dust pipeline thereby effectively reduced the prevention large particulate matter, makes the fluidized coal dust enter more equably the coal dust pipeline.
The utility model has following outstanding beneficial effect compared with prior art:
1. improve the stability of pulverized coal flow in the coal dust pipeline.
2. when the coal dust pipeline has many, can reduce the difference in flow between each coal dust pipeline, make the coal dust disperse that draws burner more even, avoid gasifier nozzle partially to burn.
3. guarantee the steady running of vapourizing furnace, improved the operational efficiency of vapourizing furnace.
Description of drawings
Fig. 1 is the schematic diagram of coal dust dense-phase transporting system in the prior art;
The schematic diagram of the coal dust dense-phase transporting system that Fig. 2 provides for the utility model;
Fig. 3 is the schematic diagram of the shell of Fig. 2 middle filtrator;
Fig. 4 is the schematic diagram of the filter screen of Fig. 2 middle filtrator.
Embodiment
Below in conjunction with accompanying drawing the utility model is described, but therefore the utility model is not subject to any restriction.Need to prove, the following describes middle use word " on ", D score and synonym thereof refer to the direction in the accompanying drawing.
As shown in Figure 2, the coal dust dense-phase transporting system that provides of the utility model comprises: issuance of materials tank 1, three parallel coal dust pipelines 2, strainer 4 and gasifier nozzles 3.Link position relation between wherein said issuance of materials tank 1, coal dust pipeline 2 and the gasifier nozzle 3 is identical with coal dust dense-phase transporting system in the prior art shown in Figure 1, particularly, described issuance of materials tank 1 is provided with and stirs fluidized plate 11, the entrance end of described coal dust pipeline 2 stretches in the issuance of materials tank 1, is positioned at fluidized plate 11 tops; The exit end of described coal dust pipeline 2 is connected to gasifier nozzle 3.
Described strainer 4 is separately positioned on the entrance end of three coal dust pipelines 2, its can be this area commonly used, can stop that the large particulate matters such as aggregate in the coal dust, iron filings, stone enter any one in the multiple strainer of coal dust pipeline.
According to a kind of embodiment of the present utility model, as shown in Figure 3 and Figure 4, described strainer 4 is comprised of filter housing 41 and filter screen 42.The lower end of described filter housing 41 arranges filter screen 42, and the upper end connects pulverized coal channel 2, and for example, described filter screen 42 is arranged on the edge of the lower end 412 of filter housing 41, and its upper end 411 is docking together with the ingress of pulverized coal channel, and keeps being communicated with.Preferably, described filter housing 41 from the upper end 411 to the lower end 412 diameters progressively increase, for example be horn-like, its lower end 412 diameters are greater than upper end 411 diameters.
The upper end 411 of described filter housing is fixedly connected with the entrance end of coal dust pipeline 2 and is connected, and for example in the upper end 411 of filter housing internal thread is set, and at the outside screw that the import setting of coal dust pipeline 2 matches, the two is threaded connection fixing.
Described filter screen 42 is arranged on the lower end 412 of described strainer, and for example described filter screen 42 is bolted on the inwall of described lower end 412.In order to make described strainer 4 can not affect the normal conveying of coal dust, respective design need to be carried out according to the particle diameter of the coal dust of carrying in the aperture of described filter screen 42.Through applicant's experimental verification repeatedly, the aperture of described filter screen 42 is preferably designed for 2 ~ 10 times of coal dust median size, so that in the large particulate matters such as the aggregate in stopping coal dust, iron filings, stone, guarantees the normal conveying of coal dust.Wherein, the material of described filter screen 42 can be stainless steel metal wire or similar material.
Further preferably, the larger diameter end 412 of described filter housing is 3:1-2:1 with the diameter ratio of smaller diameter end 411.Even there is like this filter screen 42 to intercept, described larger diameter end 412 still can suck enough coal dusts, can not affect normal gasification and produce feed.
Preferably, the edge of described filter housing upper and lower end adopts the arc design, to reduce the wearing and tearing in edge and the coal dust contact process.For example, the outside at upper and lower end edge is designed to arc.
When gasifier operation, under the effect that the issuance of materials pot bottom stirs, coal dust is in fluidized state, rely on the pressure reduction between issuance of materials tank and the vapourizing furnace, coal dust enters the coal dust pipeline by strainer, outside the large particulate matters such as the aggregate in the coal dust, iron filings, stone then are blocked in, can not enter the coal dust pipeline, thereby so that the pulverized coal flow in three coal dust pipelines is can held stationary consistent, prevent that gasifier nozzle from burning partially.
One of ordinary skill in the art will appreciate that, more than just schematically introduced specific embodiment of the utility model.But; be appreciated that in open scope of the present utility model; can carry out many improvement, variation and modification; for example; when the coal dust pipeline is two; described strainer correspondingly is separately positioned on the entrance end of described two coal dust pipelines, and these improvement, variation and modification also all fall in the protection domain of the present utility model.
Claims (6)
1. coal dust dense-phase transporting system, described system comprises issuance of materials tank, gentleization of coal dust pipeline stove burner, the bottom of described issuance of materials tank is provided with the stirring fluidized plate; The entrance end of described coal dust pipeline stretches in the issuance of materials tank, is positioned at the fluidized plate top; The exit end of described coal dust pipeline is connected with gasifier nozzle; It is characterized in that, described system also comprises strainer, and described strainer is arranged on the entrance end of coal dust pipeline.
2. the system as claimed in claim 1 is characterized in that, described strainer is comprised of filter housing and filter screen, and described filter screen is arranged on the lower end of filter housing, and the upper end of described filter housing is connected with the entrance end of pulverized coal channel.
3. system as claimed in claim 2 is characterized in that, described filter housing increases from the upper end to lower end diameter.
4. system as claimed in claim 3 is characterized in that, the lower end of described filter housing is 3:1-2:1 with the diameter of upper end ratio.
5. system as claimed in claim 4 is characterized in that, the aperture of described filter screen is 2 ~ 10 times of coal dust median size.
6. system as claimed in claim 5 is characterized in that, the outside of the edge of described filter housing upper and lower end is designed to arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220444764.6U CN202881207U (en) | 2012-09-03 | 2012-09-03 | Pulverized coal dense-phase transporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220444764.6U CN202881207U (en) | 2012-09-03 | 2012-09-03 | Pulverized coal dense-phase transporting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202881207U true CN202881207U (en) | 2013-04-17 |
Family
ID=48072653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220444764.6U Expired - Lifetime CN202881207U (en) | 2012-09-03 | 2012-09-03 | Pulverized coal dense-phase transporting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202881207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962318A (en) * | 2015-07-09 | 2015-10-07 | 杨大水 | Gasifier coal powder filter and filter method thereof |
-
2012
- 2012-09-03 CN CN201220444764.6U patent/CN202881207U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962318A (en) * | 2015-07-09 | 2015-10-07 | 杨大水 | Gasifier coal powder filter and filter method thereof |
| CN104962318B (en) * | 2015-07-09 | 2017-10-13 | 杨大水 | Gasification furnace fine coal filter and its filter method |
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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: 20130417 |