CN205048166U - Prevent that denitration pyrolysis oven urea spray gun and pipe blockage from washing pipeline - Google Patents
Prevent that denitration pyrolysis oven urea spray gun and pipe blockage from washing pipeline Download PDFInfo
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- CN205048166U CN205048166U CN201520812931.1U CN201520812931U CN205048166U CN 205048166 U CN205048166 U CN 205048166U CN 201520812931 U CN201520812931 U CN 201520812931U CN 205048166 U CN205048166 U CN 205048166U
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- stop valve
- denitration
- spray gun
- hot water
- pipeline
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Abstract
The utility model provides a prevent that denitration pyrolysis oven urea spray gun and pipe blockage from washing pipeline, is including parallel fire -fighting water pipe way and the hot water pipeline that links to each other with denitration pyrolysis oven sparge water pipeline, the hot water pipeline subtract warm water from fuel companion heat and draw, fuel companion heat subtracts the condensate water after warm water comes from the steam turbine acting, be provided with first stop valve between fire -fighting water pipe way and the denitration pyrolysis oven sparge water pipeline, be provided with the second stop valve between hot water pipeline and the denitration pyrolysis oven sparge water pipeline. Fuel companion heat subtracts warm water and through third stop valve intercommunication hot water pipeline, still is connected with the air -vent valve after first stop valve and the second stop valve respectively. The utility model discloses can thoroughly solve the deNOx systems reactor outlet NOX concentration that arouses because of the spray gun jam and exceed standard, guarantee unit safety, economy, move steadily.
Description
Technical field
The utility model relates to a kind of power station denitration pyrolyzing furnace auxiliary device, is specifically related to one and prevents denitration pyrolyzing furnace urea spray gun and line clogging flushing line.
Background technique
The denitration pyrolyzing furnace spray gun sparge water of selective catalytic reduction (SCR) denitrification apparatus is usually from fire water.Under normal circumstances, by pressurized air, the urea liquid in spray gun is atomized, makes it in pyrolyzing furnace, fully be decomposed into NH
3when spray gun is out of service, need to rinse urea liquid pipeline and spray gun inside, because the temperature of fire water is lower, cannot rinse well thoroughly, the residual easy crystallization of urea liquid is attached on tube wall, and when again dropping into spray gun, urea crystals comes off, easily cause the spray nozzle clogging of spray gun, and then cause urea liquid to flow backward to compressed air line, make urea liquid cannot or only have part can enter in pyrolyzing furnace and decompose, thus affect NH
3formation, affect denitration efficiency, cause the NO of denitrating system reactor outlet
xconcentration over-standard, has a strong impact on the operation of the economic environmental protection of unit safety.
Model utility content
The purpose of this utility model is for above-mentioned the problems of the prior art, provides one to prevent denitration pyrolyzing furnace urea spray gun and line clogging flushing line, and the structure of this flushing line is simple, effectively can improve denitration efficiency.
To achieve these goals, the technical solution adopted in the utility model is: comprise the fire water pipeline and hot water pipe that walk abreast and be connected with denitration pyrolyzing furnace flushing pipe, described hot water pipe accompanies hot cooling water to draw from fuel oil, and fuel oil accompanies hot cooling water from the water of condensation after steam turbine acting; Be provided with the first stop valve between described fire water pipeline and denitration pyrolyzing furnace flushing pipe, between hot water pipe and denitration pyrolyzing furnace flushing pipe, be provided with the second stop valve.
Described fuel oil accompanies hot cooling water to be communicated with hot water pipe through the 3rd stop valve.
The first described stop valve, the second stop valve and the 3rd stop valve are hand stop valve.
Described hot water pipe is provided with pressure gauge and thermometer.
Also pressure regulator valve is connected to after the first described stop valve and the second stop valve.
Described pressure regulator valve is hand stop valve.
Described fuel oil accompanies the pressure of hot cooling water to be 2.5MPa, and temperature is 180 DEG C.
The pressure of described denitration pyrolyzing furnace flushing pipe interior flushing water is greater than 0.8MPa.
Compared with prior art, the utility model, by installing hot water pipe additional, can effectively prevent denitration pyrolyzing furnace urea spray gun and line clogging, and former fire water flushing line retains, and can use in the summer that temperature is higher.Hot water pipe accompanies hot cooling water to draw from fuel oil, be because this cooling water is that medium temperature, pressure are proper from the condensation jellyfish pipe after steam turbine acting, and mounting distance is near, easy construction.In addition, arrange stop valve respectively at fire water pipeline with between hot water pipe and denitration pyrolyzing furnace flushing pipe, facilitate every bar branch road to control separately, the utility model can thoroughly solve because spray gun blocks the denitrating system reactor outlet NO caused
xconcentration over-standard, ensures unit safety, economy, stably runs.
Further, the utility model fuel oil accompanies hot cooling water to be communicated with hot water pipe through the 3rd stop valve, fuel oil can be regulated to accompany the pressure of hot cooling water, make the hydraulic pressure of denitration pyrolyzing furnace flushing pipe reach requirement by the 3rd stop valve.
Further, also pressure regulator valve is connected to after the utility model first stop valve and the second stop valve, first stop valve, the second stop valve and pressure regulator valve are hand stop valve, adopt twice hand stop valve can effectively prevent pipeline from leaking on the one hand, also better can control source pressure on the other hand.
Accompanying drawing explanation
Fig. 1 pipeline structure schematic diagram of the present utility model;
In accompanying drawing: 1. denitration pyrolyzing furnace flushing pipe; 2. fire water pipeline; 3. hot water pipe; 4. the first stop valve; 5. the second stop valve; 6. the 3rd stop valve; 7. pressure regulator valve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, the utility model structurally comprises the fire water pipeline 2 and hot water pipe 3 that walk abreast and be connected with denitration pyrolyzing furnace flushing pipe 1, hot water pipe 3 accompanies hot cooling water to draw from fuel oil, first stop valve 4 is set between fire water pipeline 2 and denitration pyrolyzing furnace flushing pipe 1, arrange the second stop valve 5 between hot water pipe 3 and denitration pyrolyzing furnace flushing pipe 1, fuel oil accompanies hot cooling water to be communicated with hot water pipe 3 through the 3rd stop valve 6.Also be connected to pressure regulator valve 7 after first stop valve 4 and the second stop valve 5, pressure regulator valve 7 is hand stop valve, and the first stop valve 4, second stop valve 5 and the 3rd stop valve 6 are also hand stop valve.Hot water pipe 3 is provided with pressure gauge and thermometer, fuel oil accompanies the pressure of hot cooling water to be 2.5MPa, and temperature is 180 DEG C, and the pressure of denitration pyrolyzing furnace flushing pipe 1 interior flushing water is greater than 0.8MPa.
Fuel oil accompanies hot cooling water to draw from the condensation jellyfish pipe after steam turbine acting.
The utility model hot water pipe is about about 120m, and need adopt φ 38 seamless steel pipe 120m with 10,90 ° of elbows, manually welding stop valve 3, stop valve adopts DN32 or PN3.0, heatproof 250 DEG C.In erection process, accompany hot cooling water to draw by front 14.1 meters of water of condensation to the fuel oils of Boiler Furnace, prolong by after steel platform to stove on the right side of stove, enter denitration layer and pyrolyzing furnace and rinse jellyfish manifold and lead to.Occur for preventing pipeline leak and well control source pressure, fire water pipeline 2 all installs twice hand stop valve with the outlet of hot water pipe 3, and denitration pyrolyzing furnace installs one hand stop valve before rinsing jellyfish pipe.
The utility model can solve the problem of urea liquid at pipeline and spray gun intercrystalline, thoroughly solves because spray gun blocks the denitrating system reactor outlet NO caused
xconcentration over-standard, make unit can safely, economic, stable operation.
Claims (6)
1. one kind prevents denitration pyrolyzing furnace urea spray gun and line clogging flushing line, it is characterized in that: comprise the fire water pipeline (2) and hot water pipe (3) that walk abreast and be connected with denitration pyrolyzing furnace flushing pipe (1), described hot water pipe (3) accompanies hot cooling water to draw from fuel oil, and fuel oil accompanies hot cooling water from the water of condensation after steam turbine acting; Be provided with the first stop valve (4) between described fire water pipeline (2) and denitration pyrolyzing furnace flushing pipe (1), between hot water pipe (3) and denitration pyrolyzing furnace flushing pipe (1), be provided with the second stop valve (5).
2. according to claim 1ly prevent denitration pyrolyzing furnace urea spray gun and line clogging flushing line, it is characterized in that: described fuel oil accompanies hot cooling water to be communicated with hot water pipe (3) through the 3rd stop valve (6).
3. according to claim 2ly prevent denitration pyrolyzing furnace urea spray gun and line clogging flushing line, it is characterized in that: described the first stop valve (4), the second stop valve (5) and the 3rd stop valve (6) are hand stop valve.
4. according to claim 2ly prevent denitration pyrolyzing furnace urea spray gun and line clogging flushing line, it is characterized in that: described hot water pipe (3) is provided with pressure gauge and thermometer.
5. according to claim 1ly prevent denitration pyrolyzing furnace urea spray gun and line clogging flushing line, it is characterized in that: after described the first stop valve (4) and the second stop valve (5), be also connected to pressure regulator valve (7).
6. according to claim 4ly prevent denitration pyrolyzing furnace urea spray gun and line clogging flushing line, it is characterized in that: described pressure regulator valve (7) is hand stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812931.1U CN205048166U (en) | 2015-10-19 | 2015-10-19 | Prevent that denitration pyrolysis oven urea spray gun and pipe blockage from washing pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520812931.1U CN205048166U (en) | 2015-10-19 | 2015-10-19 | Prevent that denitration pyrolysis oven urea spray gun and pipe blockage from washing pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205048166U true CN205048166U (en) | 2016-02-24 |
Family
ID=55341742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520812931.1U Active CN205048166U (en) | 2015-10-19 | 2015-10-19 | Prevent that denitration pyrolysis oven urea spray gun and pipe blockage from washing pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205048166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876276A (en) * | 2017-12-13 | 2018-04-06 | 中冶焦耐(大连)工程技术有限公司 | A kind of primary cooler flusher |
| CN108758342A (en) * | 2018-08-17 | 2018-11-06 | 华能国际电力股份有限公司玉环电厂 | The flushing line of pyrolysis oven in a kind of denitrating system |
-
2015
- 2015-10-19 CN CN201520812931.1U patent/CN205048166U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876276A (en) * | 2017-12-13 | 2018-04-06 | 中冶焦耐(大连)工程技术有限公司 | A kind of primary cooler flusher |
| CN107876276B (en) * | 2017-12-13 | 2024-03-19 | 中冶焦耐(大连)工程技术有限公司 | Primary cooler sprinkler |
| CN108758342A (en) * | 2018-08-17 | 2018-11-06 | 华能国际电力股份有限公司玉环电厂 | The flushing line of pyrolysis oven in a kind of denitrating system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |