CN203285545U - Zero-duty fuel operation system for gas turbine - Google Patents
Zero-duty fuel operation system for gas turbine Download PDFInfo
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- CN203285545U CN203285545U CN2013203068454U CN201320306845U CN203285545U CN 203285545 U CN203285545 U CN 203285545U CN 2013203068454 U CN2013203068454 U CN 2013203068454U CN 201320306845 U CN201320306845 U CN 201320306845U CN 203285545 U CN203285545 U CN 203285545U
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- gas
- coke
- blast furnace
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Abstract
The utility model relates to a zero-duty fuel operation system for a gas turbine. An object of the utility model is to provide a system which can effectively prevent the problems of pipe blockage and nozzle blockage and has the characteristics of simple structure, convenient use and relatively low operation cost. A technical solution is that the zero-duty fuel operation system for the gas turbine comprises a plurality of combustors connected with a coke oven gas supply pipe; and the coke oven gas supply pipe is successively provided with a duty coke oven gas isolation valve and a duty coke oven gas flow control valve. The zero-duty fuel operation system also is provided with a blast-furnace gas replacement pipeline, a low pressure nitrogen purging pipeline and a high pressure nitrogen isolation pipeline.
Description
Technical field
The utility model relates to the gas turbine technology field, and being specifically related to a kind of gas turbine that makes no longer needs the system of fuel on duty under normal operation.
Background technique
Gas turbine acts as a fuel with the low combustion value furnace gas that steel mill's blast furnace produces, promote turbine blade after burning, the generating of driving generator, the high-temperature tail gas of discharging can be used for heating waste heat nest stove, the Steam Actuation gas-turbine that produces generates electricity again, heat energy being carried out secondary recovery, form a CCPP combined cycle, is a kind of outstanding product of efficient, energy-saving and environmental protection.In the gas turbine working procedure, extinguish in order to ensure flame combustion chamber is unlikely, used the coke-stove gas of higher calorific value as fuel on duty.But, because the impurity of coke-stove gas own is more, be difficult to the characteristics such as purification, add the actual conditions such as flow is less, and conveyance conduit is thinner, line clogging often occurred, the problems such as spray nozzle clogging in using kind.
The model utility content
The purpose of this utility model is to overcome the deficiency that the above-mentioned background technology exists, a kind of gas turbine null value class operating fuel system is provided, this system should be able to prevent the problem of line clogging, spray nozzle clogging effectively, and has characteristics simple in structure, easy to use, that operating cost is lower.
The utility model proposes following technological scheme:
Gas turbine null value class operating fuel system, comprise the firing chamber that several are connected with the coke-stove gas steam line, sequentially be provided with coke-stove gas separating valve on duty, coke-stove gas flow control valve on duty on described coke-stove gas steam line, it is characterized in that: described operational system also is provided with blast furnace gas displacement pipeline, low-pressure nitrogen scavenging pipeline and high pressure nitrogen isolation pipeline;
Described blast furnace gas displacement pipeline is provided with displacement blast furnace gas steam supply valve and the first safety check, displacement blast furnace gas steam supply valve is connected with the blast furnace gas steam line, be provided with the blast furnace gas shut-off valve on the coke-stove gas steam line, the first safety check is connected with the coke-stove gas steam line between described blast furnace gas shut-off valve, firing chamber;
Sequentially be provided with displacement blast furnace gas nitrogen purge valve and the second safety check on described low-pressure nitrogen scavenging pipeline, described displacement blast furnace gas nitrogen purge valve is connected with the low pressure nitrogen source of the gas, and the second safety check is connected with the blast furnace gas displacement pipeline between displacement blast furnace gas steam supply valve and the first safety check;
Sequentially be provided with displacement blast furnace gas nitrogen-sealed valve and the 3rd safety check on described high pressure nitrogen isolation pipeline, described displacement blast furnace gas nitrogen-sealed valve is connected with the elevated pressure nitrogen source of the gas, and the 3rd safety check is connected with the coke-stove gas steam line between coke-stove gas flow control valve on duty, displacement blast furnace gas shut-off valve.
Described operational system also is provided with coke oven gas discharge pipeline on duty, this coke oven gas discharge pipeline on duty is provided with coke oven gas discharge valve on duty, and described coke oven gas discharge valve is connected with the coke-stove gas steam line between coke-stove gas separating valve on duty, coke-stove gas flow control valve on duty.
Described coke-stove gas steam line is provided with coke oven gas compressor.
Working principle of the present utility model is:
A. switch to null value class pattern:
1) close coke-stove gas separating valve on duty, stop carrying to firing chamber coke-stove gas on duty;
2) open displacement blast furnace gas steam supply valve, to the firing chamber conveying blast furnace;
3) close displacement blast furnace gas shut-off valve, make blast furnace gas enter firing chamber, substitute coke-stove gas on duty and burn;
4) open coke oven gas discharge valve on duty, with coke oven gas discharge on duty remaining in pipeline;
5) open displacement blast furnace gas nitrogen-sealed valve, the input high pressure nitrogen, purge remaining coke-stove gas on duty, and make pipeline internal air pressure between coke-stove gas separating valve on duty and displacement blast furnace gas shut-off valve greater than the air pressure of coke-stove gas and the air pressure of blast furnace gas, prevent from revealing accidents caused;
6) complete after purging and close displacement blast furnace gas nitrogen-sealed valve, coke-stove gas flow control valve on duty, coke oven gas discharge valve on duty.
B. shut down sweeping process
1) close displacement blast furnace gas steam supply valve, stop conveying blast furnace;
2) open displacement blast furnace gas nitrogen purge valve, the input low-pressure nitrogen, purge in pipeline and the remaining blast furnace gas in firing chamber;
3) complete after purging and close displacement blast furnace gas nitrogen purge valve;
4) orderly closedown.
The beneficial effects of the utility model are: the utility model redesigns gas turbine fuel system on duty, again planned the dispensing relation of low calorie fuels and fuel on duty on the basis of existing equipment, in the utility model, fuel on duty only is used for the gas turbine igniting, after smooth combustion, former coke-stove gas for fuel on duty is replaced with blast furnace gas, thereby solved the blockage problem of coke oven gas pipe and nozzle, improve the reliability of gas turbine operation, also reduced fuel cost; Compare with original system, the utility model has increased blast furnace gas displacement pipeline, low-pressure nitrogen scavenging pipeline and high pressure nitrogen isolation pipeline newly, original equipment is not changed substantially, greatly facilitate the transformation and upgrade of old unit, also for switching back operating fuel pattern on duty, get ready, so that some in particular cases switches back fuel work state on duty temporarily.
Description of drawings
Fig. 1 is the pipeline configuration schematic diagram of existing gas turbine operating fuel system on duty.
Fig. 2 is pipeline configuration schematic diagram of the present utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 2, gas turbine null value described in the utility model class operating fuel system, comprise that several firing chamber 6(that are connected with coke-stove gas steam line L2 have 8 firing chambers usually), sequentially be provided with coke-stove gas separating valve 4 on duty, coke-stove gas flow control valve 5 on duty on described coke-stove gas steam line, described operational system also is provided with blast furnace gas displacement pipeline L5, low-pressure nitrogen scavenging pipeline L4 and high pressure nitrogen isolation pipeline L6.
Described blast furnace gas displacement pipeline is provided with displacement blast furnace gas steam supply valve 9 and the first safety check 10, displacement blast furnace gas steam supply valve is connected with blast furnace gas steam line 13, be connected with the coke-stove gas steam line between described blast furnace gas shut-off valve, firing chamber being provided with blast furnace gas shut-off valve 8, the first safety check on the coke-stove gas steam line.
Sequentially be provided with displacement blast furnace gas nitrogen purge valve 11 and the second safety check 12 on described low-pressure nitrogen scavenging pipeline, described displacement blast furnace gas nitrogen purge valve is connected with low pressure nitrogen source of the gas 17, and the second safety check is connected with the blast furnace gas displacement pipeline between displacement blast furnace gas steam supply valve and the first safety check.
Sequentially be provided with displacement blast furnace gas nitrogen-sealed valve 14 and the 3rd safety check 15 on described high pressure nitrogen isolation pipeline, described displacement blast furnace gas nitrogen-sealed valve is connected with elevated pressure nitrogen source of the gas 16, and the 3rd safety check is connected with the coke-stove gas steam line between coke-stove gas flow control valve on duty, displacement blast furnace gas shut-off valve.
Described operational system also is provided with coke oven gas discharge pipeline L3 on duty, this coke oven gas discharge pipeline on duty is provided with coke oven gas discharge valve 7 on duty, and described coke oven gas discharge valve is connected with the coke-stove gas steam line between coke-stove gas separating valve on duty, coke-stove gas flow control valve on duty.
Described coke-stove gas steam line is provided with coke oven gas compressor 2, and decoking device 1 and oil gas separator 3 can also be set as required.
Also has the female pipe of coke-stove gas air feed L1 in figure.
Claims (3)
1. gas turbine null value class operating fuel system, comprise the firing chamber (6) that several are connected with coke-stove gas steam line (L2), sequentially be provided with coke-stove gas separating valve on duty (4), coke-stove gas flow control valve on duty (5) on described coke-stove gas steam line, it is characterized in that: described operational system also is provided with blast furnace gas displacement pipeline (L5), low-pressure nitrogen scavenging pipeline (L4) and high pressure nitrogen isolation pipeline (L6);
Described blast furnace gas displacement pipeline is provided with displacement blast furnace gas steam supply valve (9) and the first safety check (10), displacement blast furnace gas steam supply valve is connected with blast furnace gas steam line (13), be provided with blast furnace gas shut-off valve (8) on the coke-stove gas steam line, the first safety check is connected with the coke-stove gas steam line between described blast furnace gas shut-off valve, firing chamber;
Sequentially be provided with displacement blast furnace gas nitrogen purge valve (11) and the second safety check (12) on described low-pressure nitrogen scavenging pipeline, described displacement blast furnace gas nitrogen purge valve is connected with low pressure nitrogen source of the gas (17), and the second safety check is connected with the blast furnace gas displacement pipeline between displacement blast furnace gas steam supply valve and the first safety check;
Sequentially be provided with displacement blast furnace gas nitrogen-sealed valve (14) and the 3rd safety check (15) on described high pressure nitrogen isolation pipeline, described displacement blast furnace gas nitrogen-sealed valve is connected with elevated pressure nitrogen source of the gas (16), and the 3rd safety check is connected with the coke-stove gas steam line between coke-stove gas flow control valve on duty, displacement blast furnace gas shut-off valve.
2. gas turbine null value according to claim 1 class operating fuel system, it is characterized in that: described operational system also is provided with coke oven gas discharge pipeline on duty (L3), this coke oven gas discharge pipeline on duty is provided with coke oven gas discharge valve on duty (7), and described coke oven gas discharge valve is connected with the coke-stove gas steam line between coke-stove gas separating valve on duty, coke-stove gas flow control valve on duty.
3. gas turbine null value according to claim 1 and 2 class operating fuel system, it is characterized in that: described coke-stove gas steam line is provided with coke oven gas compressor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203068454U CN203285545U (en) | 2013-05-30 | 2013-05-30 | Zero-duty fuel operation system for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203068454U CN203285545U (en) | 2013-05-30 | 2013-05-30 | Zero-duty fuel operation system for gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285545U true CN203285545U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203068454U Expired - Fee Related CN203285545U (en) | 2013-05-30 | 2013-05-30 | Zero-duty fuel operation system for gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203285545U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742270A (en) * | 2014-01-28 | 2014-04-23 | 重庆中节能三峰能源有限公司 | Purging pipeline monitoring method of combustor |
| CN103775214A (en) * | 2014-01-28 | 2014-05-07 | 中节能工业节能有限公司 | Monitoring device for scavenging line of gas turbine |
| CN104989954A (en) * | 2015-07-08 | 2015-10-21 | 内蒙古包钢钢联股份有限公司 | Device and method used for cleaning jam of coking coal flow adjusting valve of CCPP set |
| CN107740933A (en) * | 2017-11-16 | 2018-02-27 | 大连派思燃气***股份有限公司 | Storage device for gas turbine fuel gas |
| CN109578145A (en) * | 2018-11-15 | 2019-04-05 | 重庆千信能源环保有限公司 | A kind of GE combustion engine starting method |
-
2013
- 2013-05-30 CN CN2013203068454U patent/CN203285545U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742270A (en) * | 2014-01-28 | 2014-04-23 | 重庆中节能三峰能源有限公司 | Purging pipeline monitoring method of combustor |
| CN103775214A (en) * | 2014-01-28 | 2014-05-07 | 中节能工业节能有限公司 | Monitoring device for scavenging line of gas turbine |
| CN104989954A (en) * | 2015-07-08 | 2015-10-21 | 内蒙古包钢钢联股份有限公司 | Device and method used for cleaning jam of coking coal flow adjusting valve of CCPP set |
| CN104989954B (en) * | 2015-07-08 | 2019-03-29 | 内蒙古包钢钢联股份有限公司 | For clearing up the device and method of CCPP unit coking coal flow tune valve bite |
| CN107740933A (en) * | 2017-11-16 | 2018-02-27 | 大连派思燃气***股份有限公司 | Storage device for gas turbine fuel gas |
| CN109578145A (en) * | 2018-11-15 | 2019-04-05 | 重庆千信能源环保有限公司 | A kind of GE combustion engine starting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |