CN102537920A - Flash evaporator for improving waste steam utilization efficiency in cement industry - Google Patents

Flash evaporator for improving waste steam utilization efficiency in cement industry Download PDF

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Publication number
CN102537920A
CN102537920A CN2012100512551A CN201210051255A CN102537920A CN 102537920 A CN102537920 A CN 102537920A CN 2012100512551 A CN2012100512551 A CN 2012100512551A CN 201210051255 A CN201210051255 A CN 201210051255A CN 102537920 A CN102537920 A CN 102537920A
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CN
China
Prior art keywords
hot water
manhole
outlet
steam
tank body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012100512551A
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Chinese (zh)
Inventor
叶金辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOUKABEN NEW ENERGY SCIENCE AND TECHNOLOGY DEVELOPMENT(SHANGHAI)CO LTD
Original Assignee
LOUKABEN NEW ENERGY SCIENCE AND TECHNOLOGY DEVELOPMENT(SHANGHAI)CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by LOUKABEN NEW ENERGY SCIENCE AND TECHNOLOGY DEVELOPMENT(SHANGHAI)CO LTD filed Critical LOUKABEN NEW ENERGY SCIENCE AND TECHNOLOGY DEVELOPMENT(SHANGHAI)CO LTD
Priority to CN2012100512551A priority Critical patent/CN102537920A/en
Publication of CN102537920A publication Critical patent/CN102537920A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a flash evaporator for waste heat generation in a cement kiln, which is characterized in that the flash evaporator includes a tank body, and a hot water inlet, a steam outlet, a hot water outlet, a remote transmission pressure gauge joint, a safety valve joint, a level gauge joint, a pressure gauge joint, a manhole, a steam exhaust outlet and a drainage outlet that are arranged on the tank body. Under-saturated water is transmitted into the flash evaporator in the system under a certain pressure for capacity expansion and pressure reduction, according to energy conservation, the high-pressure hot water can flash evaporates a large amount of secondary low-pressure saturated steam under low pressure, which are separated through steam-water separation to serve as air supply so as to enter the multi-parameter turbine. The device can stabilize the generating system and improve the generating capability.

Description

A kind of flash vessel that is used for cement industry raising exhaust gas utilization efficient
Technical field
The present invention relates to the flasher in a kind of cement afterheat generation, especially can improve the flash vessel of exhaust gas utilization efficient.
Background technology
As everyone knows, energy savings is a set longtime policy of China, and wherein afterheat utilization is the most actively and effectively means, in many fields of the existing industry of China, afterheat utilization in the production process is all drawn attention.A large amount of novel process equipment and production line have been dropped in the cement industry transformation in recent years, supporting pure middle and low temperature cement afterheat generation system.In practical application, because technical process, the parameter major part of technology waste heat flue gas is to be in fluctuation status.And but fluctuating range often exceeds the self-regulation scope of conventional afterheat generating system design, makes the afterheat generating system can not stable operation.The fluctuating range that has even big to making compelled off-the-line of common afterheat generating system and blowing out, the economic benefit of waste heat recovery can't guarantee.Conventional single compression technology system is not owing to have flash vessel and loop, and the exhaust-heat boiler flue gas outlet temperature is not fully utilized for the low grade residual heat flue gas heat of mainly being made up of hot-air generally more than 170 ℃, and system's generating efficiency is lower.And when stove waste heat supply temperature and flow increase suddenly, have no the heat that mode can absorbing redundant, and the feed-water heater that is arranged in afterbody can be vaporized, and boiler drum level is uncontrollable, influences the normal operation of electricity generation system.
Summary of the invention
In order to reduce the waste of thermal source; Make the stable operation of afterheat generating system ability; The present invention has designed a kind of flash vessel that the cement afterheat generation industry improves exhaust gas utilization efficient that is used for; This device can make full use of thermal source, and can adapt to and regulate fluctuating widely of flue gas, makes the operation of afterheat generating system normal and stable.
The technical solution adopted for the present invention to solve the technical problems is: flash vessel of the present invention comprises tank body, is arranged on hot water inlet, steam (vapor) outlet, hot water outlet, teletransmission pressure gauge connection, relief valve connection, interface of the level gauge, pressure gauge connection, manhole, steam drain, discharging hole on the tank body.This flash vessel adopts stand-type cylinder pot type structure; Hot water inlet is located at tank body one middle side part, gos deep into tank interior with cylindrical pipe, and equidistant from distance is offered four discharge openings in the pipeline bottom; Manhole then is located at the middle and upper part of opposite side; Tank body center of top position has relief valve connection, and relief valve connection one side is a steam (vapor) outlet, and opposite side is an exhaust outlet; Tank base has hot water outlet and discharging hole; With the manhole place at grade and belong to diametric angle with manhole and become a side of 45 degree to be provided with the teletransmission pressure gauge connection, become at grade and with hot water inlet the opposite side of 30 degree angles to be provided with pressure gauge connection with the manhole place, be provided with two interface of the level gauge in the middle and lower part of tube wall with manhole opposite side in angle of 45 degrees.
Flash vessel operation principle of the present invention is: the undersaturation water under the certain pressure is sent into the flash vessel in the system; Carry out the dilatation step-down; Because the conservation of energy, high-pressure water heating under low pressure can flash off a large amount of secondary low-voltage saturated vapors, separates the back gets into multi-parameter as tonifying Qi steam turbine through carbonated drink; The stable electric generation system improves generating capacity.After introducing flash system, on the basis of conventional power generation usage technology, increase flash distillation and regulated indirect steam entering steam turbine power generation, improved the generated output of waste heat system.Adopt the multiple electricity about 10% of the general comparable routine techniques of this technology, also reduced the outlet temperature of boiler waste gas simultaneously, can be reduced to below 90 ℃.
The invention has the beneficial effects as follows, improve the utilization ratio of cement kiln flue gas, the fluctuation of active adjustment flue gas guarantees the operation of afterheat generating system normal and stable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the flash vessel internal view.
Fig. 2 is the flash vessel vertical view.
 
1. hot water inlets among the figure, 2. steam (vapor) outlet, 3. hot water outlet, 4. teletransmission pressure gauge connection,
5. relief valve connection, 6.a, b interface of the level gauge, 7. pressure gauge connection, 8. steam drain,
9. manhole, 10. discharging hole.
The specific embodiment
In Fig. 1 and Fig. 2, flash vessel of the present invention is made up of hot water inlet 1, steam (vapor) outlet 2, hot water outlet 3, teletransmission pressure gauge connection 4, relief valve connection 5, interface of the level gauge 6a, b, pressure gauge connection 7, steam drain 8, manhole 9, discharging hole 10.This flash vessel adopts stand-type cylinder pot type structure; Hot water inlet 1 is located at tank body one middle side part, gos deep into tank interior with cylindrical pipe, and equidistant from distance is offered four discharge openings in the pipeline bottom; 9 middle and upper parts that are located at opposite side of manhole; Tank body center of top position has relief valve connection 5, and relief valve connection 5 one sides are steam (vapor) outlets 2, and opposite side is an exhaust outlet 8; Tank base has hot water outlet 3 and discharging hole 10; Become a side of 45 degree to be provided with teletransmission pressure gauge connection 4 at grade and with the diametric angle in manhole 9 places with manhole 9 places, be provided with pressure gauge connection 7 at grade and with the opposite side of 1 one-tenth 30 degree of hot water inlet angle, be provided with two interface of the level gauge 6 in the middle and lower part of tube wall with manhole 9 opposite side in angle of 45 degrees with manhole 9 places.
During work; Feedwater is after feed pump gets into waste heat boiler; The hot water that produces satisfies the main feedwater of waste heat boiler and the water consumption of flash vessel simultaneously, and a part of hot water that gets into waste gas residual heat boiler generates superheated steam after the waste gas heat exchange, insert the main air intake of steam turbine.Another part HTHP undersaturation hot water gets into flash vessel, produces a certain amount of low-pressure saturated steam, gets into the low pressure filling mouth of steam turbine, and main steam and low-pressure steam do work in steam turbine, and pushing turbine rotates, and produces electric energy jointly.Flash vessel separates a large amount of saturation waters that produce and gets into oxygen-eliminating device, after deoxygenation, supplies with boiler by feed pump with the condensed water that steam turbine is discharged, and forms a complete thermodynamic cycle.

Claims (2)

1. one kind is used for the flash vessel that cement industry improves exhaust gas utilization efficient, it is characterized in that this flash vessel comprises tank body, is arranged on hot water inlet, steam (vapor) outlet, hot water outlet, teletransmission pressure gauge connection, relief valve connection, interface of the level gauge, pressure gauge connection, manhole, steam drain, discharging hole on the tank body.
2. a kind of flash vessel that cement industry improves exhaust gas utilization efficient that is used for according to claim 1; It is characterized in that: said flash vessel adopts stand-type cylinder pot type structure; Said hot water inlet is located at tank body one middle side part, gos deep into tank interior with cylindrical pipe, and equidistant from distance is offered four discharge openings in the pipeline bottom; Manhole then is located at the middle and upper part of opposite side; Tank body center of top position is provided with relief valve connection, and relief valve connection one side is a steam (vapor) outlet, and opposite side is an exhaust outlet; Tank base has hot water outlet and discharging hole; With the manhole place at grade and belong to diametric angle with manhole and become a side of 45 degree to be provided with the teletransmission pressure gauge connection, become at grade and with hot water inlet the opposite side of 30 degree angles to be provided with pressure gauge connection with the manhole place, be provided with two interface of the level gauge in the middle and lower part of tube wall with manhole opposite side in angle of 45 degrees.
CN2012100512551A 2012-03-01 2012-03-01 Flash evaporator for improving waste steam utilization efficiency in cement industry Pending CN102537920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100512551A CN102537920A (en) 2012-03-01 2012-03-01 Flash evaporator for improving waste steam utilization efficiency in cement industry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012100512551A CN102537920A (en) 2012-03-01 2012-03-01 Flash evaporator for improving waste steam utilization efficiency in cement industry

Publications (1)

Publication Number Publication Date
CN102537920A true CN102537920A (en) 2012-07-04

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Application Number Title Priority Date Filing Date
CN2012100512551A Pending CN102537920A (en) 2012-03-01 2012-03-01 Flash evaporator for improving waste steam utilization efficiency in cement industry

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103185331A (en) * 2012-08-06 2013-07-03 哈尔滨工大金涛科技股份有限公司 Medium-high temperature waste water heat energy recovery method and device
CN103277787A (en) * 2013-05-24 2013-09-04 苏州市中衡压力容器制造有限公司 Horizontally-arranged periodic blow-down flash tank
CN107289433A (en) * 2017-07-21 2017-10-24 广州恒足节能科技有限公司 A kind of flash tank for producing dry saturated steam

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103185331A (en) * 2012-08-06 2013-07-03 哈尔滨工大金涛科技股份有限公司 Medium-high temperature waste water heat energy recovery method and device
CN103277787A (en) * 2013-05-24 2013-09-04 苏州市中衡压力容器制造有限公司 Horizontally-arranged periodic blow-down flash tank
CN107289433A (en) * 2017-07-21 2017-10-24 广州恒足节能科技有限公司 A kind of flash tank for producing dry saturated steam
CN107289433B (en) * 2017-07-21 2023-06-23 广州恒足节能科技有限公司 Flash tank for generating dry saturated steam

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Application publication date: 20120704