CN203454836U - Waste steam recovery system - Google Patents
Waste steam recovery system Download PDFInfo
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- CN203454836U CN203454836U CN201320544029.7U CN201320544029U CN203454836U CN 203454836 U CN203454836 U CN 203454836U CN 201320544029 U CN201320544029 U CN 201320544029U CN 203454836 U CN203454836 U CN 203454836U
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- steam
- steam recovery
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- pipeline
- recovery pump
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Abstract
The utility model belongs to the technical field of chemical engineering equipment and provides a waste steam recovery system which comprises a waste steam recovery pump and a pressure adjusting valve. A steam inlet assembly pipeline of the waste steam recovery pump is connected with a power plant steam pipe system. An expansion pipeline of the waste steam recovery pump is connected with the user end. A user end pipeline is connected with a flash tank. One pipeline of the flash tank is connected with a waste steam suction chamber of the waste steam recovery pump, and the other pipeline of the flash tank is connected with a condensate water recovery mechanism. The pressure adjusting valve is controlled by a controller connected with a pressure transmitter in a signal mode, wherein the pressure transmitter is used for detecting pipeline pressure between the waste steam recovery pump and the user end. The waste steam recovery system is simple in structure and reasonable in design. Under the circumstance that heat energy of power plant steam is not lost, the steam in steam condensate water can be recovered, the phenomenon that steam kinetic energy from a power plant due to pressure reduction of a pressure reduction valve in the prior art is wasted is avoided, and the economic benefit of more than 300 thousand yuan can be generated in one year under the condition of calculation of gas consumption of 50 tons each day.
Description
Technical field
The utility model belongs to chemical plant installations technical field, is specifically related to a kind of dead steam recovery system.
Background technology
At present, along with the enforcement dynamics of national energy-saving consumption reduction policy strengthens gradually, start to occur that steam exhaust recovering device is for reclaiming exhaust steam.Existing steam exhaust recovering device all be take oil-sealed rotary pump extraction exhaust steam as main, although this class retracting device has reclaimed exhaust steam, has the following disadvantages: 1, will consume a large amount of electric energy and drive vavuum pump; 2, the efficiency of oil-sealed rotary pump is more fixing, does not possess automatic regulation function, and the steam consumption large enterprise of fluctuating can not be used; 3, maintenance cost is larger.
Utility model content
The problem existing for prior art, the purpose of this utility model is that design provides a kind of technical scheme of dead steam recovery system.
Described a kind of dead steam recovery system, it is characterized in that comprising exhaust steam recovery pump and pressure-regulating valve, the steam inlet assembly pipeline of described exhaust steam recovery pump connects power plant's steam pipe system, the convergent divergent channel pipeline of described exhaust steam recovery pump connects user side, described user side pipeline connects flash tank, described flash tank one road pipeline connects the exhaust steam suction chamber of exhaust steam recovery pump, another road pipeline connects condensed water recycle mechanism, described pressure-regulating valve is controlled by controller, described controller signals connects the pressure transmitter for detection of loine pressure between exhaust steam recovery pump and user side.
Described a kind of dead steam recovery system, it is characterized in that described exhaust steam recovery pump comprises steam inlet assembly, exhaust steam suction chamber, expansion trunnion and the convergent divergent channel connecting successively, in described steam inlet assembly, be equipped with the regulating spool of pressure-regulating valve, described regulating spool lower end is equipped with Laval nozzle.
Described a kind of dead steam recovery system, is characterized in that described user side comprises material tank in parallel, coupling tank and baking oven.
Described a kind of dead steam recovery system, it is characterized in that described condensed water recycle mechanism comprises the fluid level transmitter being arranged on flash tank, the water pump and the Liquid level adjusting valve that are connected with flash tank successively pipeline, described fluid level transmitter signal connects controller, described controller control connection water pump and Liquid level adjusting valve.
Above-mentioned a kind of dead steam recovery system, simple in structure, reasonable in design, native system is not in the situation that lose the heat energy of power plant's steam, not only reclaimed the steam in steam condensate (SC), and avoid in prior art, by the pressure-reducing valve phenomenon that steam kinetic energy that power plant is come wastes that reduces pressure, with 50 tons of calculating of gas consumption every day, within 1 year, can producing the economic benefit of more than 300,000 yuan.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present utility model;
Fig. 2 is control principle drawing of the present utility model;
Fig. 3 is the structural representation of exhaust steam recovery pump in the utility model.
In figure: 1-material tank; 2-coupling tank; 3-baking oven; 4-flash tank; 5-fluid level transmitter; 6-water pump; 7-Liquid level adjusting valve; 8-exhaust steam recovery pump; 801-steam inlet assembly; 802-Laval nozzle; 803-exhaust steam suction chamber; 804-expands trunnion; 805-convergent divergent channel; 9-pressure-regulating valve; 901-regulating spool; 10-pressure transmitter; 11-power plant steam pipe system; 12-user side; 13-controller.
The specific embodiment
Below in conjunction with Figure of description, further illustrate the utility model.
As shown in the figure, a kind of dead steam recovery system comprises exhaust steam recovery pump 8 and pressure-regulating valve 9, and exhaust steam recovery pump 8 and pressure-regulating valve 9 can be structure as a whole, and can be also Split connection structure.Exhaust steam recovery pump 8 comprises steam inlet assembly 801, exhaust steam suction chamber 803, expansion trunnion 804 and the convergent divergent channel 805 connecting successively, in steam inlet assembly 801, be equipped with the regulating spool 901 of pressure-regulating valve 9, regulating spool 901 lower ends are equipped with Laval nozzle 802, and Laval nozzle 802 runs through and is arranged on steam inlet assembly 801 and exhaust steam suction chamber 803.
The operation principle of exhaust steam recovery pump 8 is as follows: under adiabatci condition, the regulating spool 901 that steam inlet assembly is 801 li is controlled working steam and is passed through Laval nozzle 802 with certain flow, pressure energy is converted into kinetic energy, with supersonic speed, enter diffusion trunnion 804, the suction chamber of exhaust steam simultaneously 803 pressure drops, form vacuum exhaust steam are sucked; Exhaust steam enters diffusion trunnion 804 with working steam, working steam bumps, mixes in diffusion trunnion 804 with exhaust steam, carry out energy exchange, complete mixing, Speed Reduction is subsonic speed, subsonic air-flow further reduces in diffuser pipe 805 flowing velocities, and pressure increases gradually, reaches the required pressure of explained hereafter.
Flash tank 4 one road pipelines connect the exhaust steam suction chamber 803 of exhaust steam recovery pumps 8, carry out steam and are recycled, and another road pipeline connects condensed water recycle mechanism, the condensed water that recovery can not flash distillation.Condensed water recycle mechanism comprises fluid level transmitter 5, water pump 6 and Liquid level adjusting valve 7, wherein fluid level transmitter 5 is arranged in flash tank 4, water pump 6 and Liquid level adjusting valve 7 successively pipeline are connected on flash tank 4, fluid level transmitter 5 signals connect controller 13, controller 13 control connection water pumps 6 and Liquid level adjusting valve 7.Adopt after above-mentioned condensed water recycle mechanism, make level stability in flash tank 4 in best flash distillation scope.
During use, the 0.6Mpa steam of sending out from power plant's steam pipe system 11 enters exhaust steam recovery pump 8 from steam inlet assembly 801, at the regulating spool 901 of 801 li of steam inlet assemblies, control working steam and pass through Laval nozzle 802 with certain flow, pressure energy is converted into kinetic energy, with supersonic speed, enter diffusion trunnion 804, the suction chamber of exhaust steam simultaneously 803 pressure drops, form vacuum exhaust steam are sucked; Exhaust steam enters diffusion trunnion 804 with working steam, working steam bumps, mixes in diffusion trunnion 804 with exhaust steam, carry out energy exchange, complete mixing, Speed Reduction is subsonic speed, and subsonic air-flow further reduces in diffuser pipe 805 flowing velocities, and pressure increases gradually, reach the required 0.1MPa～0.4 Mpa steam of explained hereafter, then for user side 12, heating.
The condensed water obtaining after heating enters flash tank 4 and carries out flash distillation, and the steam that in flash tank 4, flash distillation obtains enters the steam acting in conjunction that exhaust steam recovery pump 8 He Cong power plant steam pipe systems 11 enter and recycles, and condensed water that can not flash distillation enters condensed water recycle mechanism.
Meanwhile, the steam pressure between exhaust steam recovery pump 8 and user side 12 in pipeline detects through pressure transmitter 10, and pressure signal is sent to controller 13, and controller 13 is sent to pressure-regulating valve 9 by pressure inverted signal, makes loine pressure control setting value.Concrete control is as follows: according to pressure, control steam flow, when consumption is large, under controller 13 is controlled, the exhaust capacity of pressure-regulating valve 9 automatic adjustment height exhaust steam recovery pumps 8, pressure in pipeline is constant all the time, has avoided transmitting the problem that data lagging influence is produced; When consumption is little, under controller 13 is controlled, pressure-regulating valve 9 is turned down the exhaust capacity of exhaust steam recovery pump 8 automatically, and the pressure in pipeline is constant all the time, can not exist superpressure dangerous.
The liquid level of flash tank 4 detects through fluid level transmitter 5, and liquid level signal is sent to controller 13, and controller 13 is sent to water pump 6 and Liquid level adjusting valve 7 by liquid level inverted signal, makes liquid level all-the-time stable in flash tank 4 in best flash distillation scope.
Every day approximately 50 tons of the steam consumptions of take in actual production are example, set up the laggard row economic benefit calculation of native system: every day, actual production was 19 hours: gas consumption 50 ÷ 19=2.63t/h per hour.User side 12 initial steam pressure 0.35MPa, draining back pressure is got 0.3MPa, flash tank 4 force value are got after 0.10MPa(steam exhaust recovering device suction double evaporation-cooling vapour) its flash steam amount is: the difference ÷ latent heat of vaporization=0.053 of liquid enthalpy, 2.63 t/h * 5.3%=139t/h.Add the steam leaking in drain valve hydrophobic process, actual recovered efficiency doubles.Steam price is assumed to be 200 yuan/ton, every day recovered steam economic benefit be: 0.139 ton/hour * 2 * 19 hours/day * 200 yuan/ton=1056 yuan/day; Annual production heating was calculated according to 300 days, 1056 yuan/day * 300 days=31.68 ten thousand yuan/year.As can be seen here, the economic benefit of this steam exhaust recovering device is considerable.
Shown in the above and figure is only preferred embodiment of the present utility model.It should be pointed out that for the person of ordinary skill of the art, not departing under the prerequisite of the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.
Claims (4)
1. a dead steam recovery system, it is characterized in that comprising exhaust steam recovery pump (8) and pressure-regulating valve (9), steam inlet assembly (801) pipeline of described exhaust steam recovery pump (8) connects power plant's steam pipe system (11), convergent divergent channel (805) pipeline of described exhaust steam recovery pump (8) connects user side (12), described user side (12) pipeline connects flash tank (4), described flash tank (4) one road pipelines connect the exhaust steam suction chamber (803) of exhaust steam recovery pump (8), another road pipeline connects condensed water recycle mechanism, described pressure-regulating valve (9) is controlled by controller (13), described controller (13) signal connects the pressure transmitter (10) for detection of loine pressure between exhaust steam recovery pump (8) and user side (12).
2. a kind of dead steam recovery system as claimed in claim 1, it is characterized in that described exhaust steam recovery pump (8) comprises steam inlet assembly (801), exhaust steam suction chamber (803), expansion trunnion (804) and the convergent divergent channel (805) connecting successively, in described steam inlet assembly (801), be equipped with the regulating spool (901) of pressure-regulating valve (9), described regulating spool (901) lower end is equipped with Laval nozzle (802).
3. a kind of dead steam recovery system as claimed in claim 1, is characterized in that described user side (12) comprises material tank (1) in parallel, coupling tank (2) and baking oven (3).
4. a kind of dead steam recovery system as claimed in claim 1, it is characterized in that described condensed water recycle mechanism comprise the fluid level transmitter (5) that is arranged on flash tank (4), with flash tank (4) water pump (6) that pipeline is connected successively and Liquid level adjusting valve (7), described fluid level transmitter (5) signal connects controller (13), described controller (13) control connection water pump (6) and Liquid level adjusting valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320544029.7U CN203454836U (en) | 2013-09-03 | 2013-09-03 | Waste steam recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320544029.7U CN203454836U (en) | 2013-09-03 | 2013-09-03 | Waste steam recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203454836U true CN203454836U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320544029.7U Expired - Fee Related CN203454836U (en) | 2013-09-03 | 2013-09-03 | Waste steam recovery system |
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| Country | Link |
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| CN (1) | CN203454836U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471416A (en) * | 2013-09-03 | 2013-12-25 | 嘉兴科隆化工有限公司 | Exhaust steam recovery system |
| CN103925585A (en) * | 2014-05-01 | 2014-07-16 | 苟仲武 | Steam dead steam regeneration device and working method |
-
2013
- 2013-09-03 CN CN201320544029.7U patent/CN203454836U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471416A (en) * | 2013-09-03 | 2013-12-25 | 嘉兴科隆化工有限公司 | Exhaust steam recovery system |
| CN103471416B (en) * | 2013-09-03 | 2015-08-19 | 嘉兴科隆化工有限公司 | A kind of dead steam recovery system |
| CN103925585A (en) * | 2014-05-01 | 2014-07-16 | 苟仲武 | Steam dead steam regeneration device and working method |
| CN103925585B (en) * | 2014-05-01 | 2015-10-21 | 苟仲武 | A kind of steam regenerating unit and method of work |
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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: 20140226 Termination date: 20150903 |
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| EXPY | Termination of patent right or utility model |