CN101520172A - Energy-saving reclaiming process for residual heat of fume in boiler - Google Patents
Energy-saving reclaiming process for residual heat of fume in boiler Download PDFInfo
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- CN101520172A CN101520172A CN200910048782A CN200910048782A CN101520172A CN 101520172 A CN101520172 A CN 101520172A CN 200910048782 A CN200910048782 A CN 200910048782A CN 200910048782 A CN200910048782 A CN 200910048782A CN 101520172 A CN101520172 A CN 101520172A
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Abstract
The invention discloses an energy-saving reclaiming process for residual heat of fume in a boiler. The process is characterized in that a thermotube feedwater heat exchanger prying seat consisting of a thermotube feedwater heat exchanger and a draught fan is arranged at the rear part of a steam injection boiler of a movable oil field; the fume process comprises that: fume passes through a convection section of the steam injection boiler and is introduced to the side of a flue of the feedwater heat exchanger through a fume hose; the fume is subjected to cooling and heat exchange, sent to a chimney and discharged through the draught fan; the water heating process comprises that: firstly, softened water enters the thermotube feedwater heat exchanger and is heated; secondly, after being heated, the softened water enters a deoxidizer and is deoxidized; and finally, after being deoxidized, the softened water is sent to a plunger pump of the boiler. The energy-saving reclaiming process has the advantages that: the thermotube feedwater heat exchanger prying seat separately consisting of the thermotube feedwater heat exchanger and the draught fan is arranged so as to be favorable for the moving convenience of the movable boiler. The process reduces the temperature of the fume through the heat exchanger to heat the softened water, saves the precious energy, improves the temperature of the softened water and is favorable for the deoxidation of the softened water.
Description
Technical field
The present invention relates to a kind of by heat pipe to the waste heat recovery of water-to-water heat exchanger to high-temperature flue gas, behind the heating soft water, and then the energy-saving reclaiming process for residual heat of fume in boiler of deoxygenation.
Background technology
According to the characteristic of uphole steam generator as can be known, the heat loss of uphole steam generator is mainly heat loss due to exhaust gas, boiler radiation loss and non-complete combustion of fuel heat loss, heat loss due to exhaust gas portion maximum.Traditional flow process is: movable oil field boiler flue gas directly discharges, and exhaust gas temperature is than higher, and the exhaust gas heat loss is bigger.Soft water is heating not, comes to enter the oxygen-eliminating device deoxygenation after the water softening, and the soft water after the deoxygenation directly enters boiler, and the shortcoming of this flow process is cigarette Wen Taigao, and is not energy-conservation.And the water temperature during deoxygenation is lower, makes that the deoxygenation index is not fine.When moving especially in the winter time, have only 3～5 ℃ because of coming coolant-temperature gage, deaerating effect descends, and making chemistry add dose increases.Heat exchange of heat pipe is a kind of heat exchanger that grows up along with the development of hot pipe technique in recent years.Heat transfer technology of heat pipe is advanced person, the efficient heat transfer technology that has grown up since the sixties in the world.Heat pipe generally is made up of shell and internal work liquid (working medium).Shell is steel, evacuated sealing shell, and working medium is the liquid through specially treated.The heat pipe bringing-up section absorbs the hot fluid heat, and heat is passed to intraductal working medium by heat pipe wall, and working medium heat absorption back evaporation and boiling change steam into.Steam rises to heat release section under the effect of small pressure reduction, the cooling effect of managed outer cold fluid, and the steam condensation is also outwards emitted the latent heat of vaporization, and cold fluid acquires heating.Because inside heat pipe is evacuated, working medium is very easily evaporated and boiling, and the heat pipe starting rapidly.Heat exchange of heat pipe is a kind of heat exchanger that utilizes the adopting heat pipes for heat transfer element to be made.It can come the adjustable pipe wall temperature by the means such as size of adjusting heat-pipe elements evaporator section and condensation segment appearance expansion heat-transfer area, makes it to be higher than flue gas dew point or avoids maximum corrosion region, and is very effective to the cold end corrosion that prevents boiler tail, long-pending stifled ash.
Because of its tube wall temperature higher, favourable to preventing cold end corrosion and caking property knot ash, in recycling, comparatively fast promoted low temperature exhaust heat, so device that useful heat pipe reclaims in the uphole steam generator flue gas waste heat recovery, but still do not utilize residual heat from boiler fume to come thermoplastic water so far, deoxygenation after heating up enters the such water heating procedure of boiler again.
Summary of the invention
The present invention need solve the directly water temperature technical problem relatively poor than end deaerating effect the when heat loss brought of discharging and soft water deoxygenation of movable oil field boiler flue gas, provides a kind of residual heat from boiler fume energy-conservation recovery new technology for this reason.
Technical scheme of the present invention is: a kind of energy-saving reclaiming process for residual heat of fume in boiler, be characterized in, set up a heat pipe of forming for water-to-water heat exchanger and air-introduced machine by heat pipe at the rear portion of movable uphole steam generator and prize seat to water-to-water heat exchanger, make flue gas flow be: flue gas is introduced to water-to-water heat exchanger flue side by the flue gas flexible pipe behind the injection boiler convection section, deliver to smoke stack emission by air-introduced machine after the cooling heat exchange, the water heating procedure is: demineralized water enters heat pipe earlier and surveys heating for water-to-water heat exchanger water, enter the oxygen-eliminating device deoxygenation after the intensification, after deoxygenation, send into the boiler plunger displacement pump again.
Consider the original-pack blower fan design wind pressure of movable injection boiler burner surplus deficiency, for guaranteeing boiler combustion, prevent that the radiant section furnace pressure is too high, and overcome heat pipe feedwater heat exchanger body resistance and smokejack resistance, fume afterheat utilizes system should set up air-introduced machine.Based on the requirement of movable injection boiler convenient removal, design is placed on one with air-introduced machine for water-to-water heat exchanger heat pipe simultaneously, is made into special-purpose UTILIZATION OF VESIDUAL HEAT IN sled seat.
Energy-saving reclaiming process for residual heat of fume in boiler beneficial effect of the present invention is: increase the heat pipe of being made up of water-to-water heat exchanger and air-introduced machine separately and prize seat to water-to-water heat exchanger, help the convenience of movable boiler removal of home.Reduce cigarette temperature heating soft water by heat exchanger, promptly saved the valuable energy and improved the soft water temperature again, help the soft water deoxygenation.
Description of drawings
Fig. 1 is the energy-saving reclaiming process for residual heat of fume in boiler flow chart.
The specific embodiment
By shown in Figure 1, the heat pipe of setting up at the rear portion of movable uphole steam generator forms for water-to-water heat exchanger 1 and air-introduced machine 5 to water-to-water heat exchanger sled seat by heat pipe, flue gas flow as shown in the figure, flue gas is introduced flue side to water-to-water heat exchanger 1 by the flue gas flexible pipe behind the injection boiler convection section, delivers to smoke stack emission by air-introduced machine 5 after the cooling heat exchange.The water heating procedure is: come water through demineralizer 3 softening laggard water side heating of giving water-to-water heat exchanger 1 to heat pipe, enter oxygen-eliminating device 2 deoxygenations after the intensification, send into boiler plunger displacement pump 4 again after deoxygenation.The benefit of this flow process is the water temperature when having improved deoxygenation when reclaiming heat energy, makes that the deoxygenation index is better.When moving especially in the winter time, have only 3～5 ℃ because of coming coolant-temperature gage, deaerating effect descends, and making chemistry add dose increases.And this flow scheme design has just in time remedied the deficiency of former deaerating type of cycles.
With the 9.2t/h injection boiler is example, presses the 7000m3 exhaust gas volumn and calculates, and supposes that exhaust gas temperature drops to 180 ℃ by 250 ℃, and fume afterheat utilizes heat can reach 185KW.The operation water yield is the 9t/h measuring and calculating, and getting 20 ℃ of boiler feed water specific heat capacities is 4.175kJ/KgK, and all the 185KW fume afterheat can make the boiler feed water temperature raise 18 ℃.The temperature of soft water is up to 20 ℃ summer, and summer, the boiler feed water temperature was raised to 38 ℃, and inlet water temperature is no more than 60 ℃, and plunger displacement pump need not be transformed and can normally move.
Claims (1)
1. energy-saving reclaiming process for residual heat of fume in boiler, it is characterized in that, set up a heat pipe of forming for water-to-water heat exchanger and air-introduced machine by heat pipe at the rear portion of movable uphole steam generator and prize seat to water-to-water heat exchanger, make flue gas flow be: flue gas is introduced to water-to-water heat exchanger flue side by the flue gas flexible pipe behind the injection boiler convection section, delivers to smoke stack emission by air-introduced machine after the cooling heat exchange; The water heating procedure is: demineralized water enters heat pipe earlier and heats to water-to-water heat exchanger, enters the oxygen-eliminating device deoxygenation after the intensification, sends into the boiler plunger displacement pump after deoxygenation again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048782A CN101520172A (en) | 2009-04-03 | 2009-04-03 | Energy-saving reclaiming process for residual heat of fume in boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910048782A CN101520172A (en) | 2009-04-03 | 2009-04-03 | Energy-saving reclaiming process for residual heat of fume in boiler |
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| CN101520172A true CN101520172A (en) | 2009-09-02 |
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| CN200910048782A Pending CN101520172A (en) | 2009-04-03 | 2009-04-03 | Energy-saving reclaiming process for residual heat of fume in boiler |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234163A (en) * | 2010-04-27 | 2011-11-09 | 上海晟煜科贸有限公司 | System of heating sewage by using circulating fluidized bed boiler |
| CN102519129A (en) * | 2011-12-14 | 2012-06-27 | 西安交通大学 | Chemical pool water heating system by aid of flue gas waste heat recovery and method |
| CN102563610A (en) * | 2011-10-24 | 2012-07-11 | 上海上电电力工程有限公司 | Energy saving system for boiler |
| CN102777886A (en) * | 2012-08-13 | 2012-11-14 | 中国中元国际工程公司 | Flue gas waste heat recovery device and method for gas-fired boiler |
| CN102997218A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Economizing device for boiler |
| CN103047640A (en) * | 2012-12-26 | 2013-04-17 | 淮安万邦香料工业有限公司 | Boiler with heat exchanging device |
| CN104930494A (en) * | 2015-07-29 | 2015-09-23 | 中能世华(北京)节能科技有限公司 | Heat pipe waste heat recovery energy-saving device |
| CN105570872A (en) * | 2016-02-29 | 2016-05-11 | 裴渐强 | Compound heat pipe type smoke deep cooling deaerator |
| CN109029040A (en) * | 2018-07-13 | 2018-12-18 | 北京欧美中科学技术研究院 | A kind of fired oilfield gas injection boiler flue gas comprehensive utilization device |
| CN114850207A (en) * | 2022-03-27 | 2022-08-05 | 森特士兴集团股份有限公司 | In-situ hot water reinforced microorganism coupling soil remediation system |
-
2009
- 2009-04-03 CN CN200910048782A patent/CN101520172A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234163A (en) * | 2010-04-27 | 2011-11-09 | 上海晟煜科贸有限公司 | System of heating sewage by using circulating fluidized bed boiler |
| CN102563610A (en) * | 2011-10-24 | 2012-07-11 | 上海上电电力工程有限公司 | Energy saving system for boiler |
| CN102519129A (en) * | 2011-12-14 | 2012-06-27 | 西安交通大学 | Chemical pool water heating system by aid of flue gas waste heat recovery and method |
| CN102777886A (en) * | 2012-08-13 | 2012-11-14 | 中国中元国际工程公司 | Flue gas waste heat recovery device and method for gas-fired boiler |
| CN102777886B (en) * | 2012-08-13 | 2014-07-16 | 中国中元国际工程公司 | Flue gas waste heat recovery device and method for gas-fired boiler |
| CN102997218A (en) * | 2012-08-21 | 2013-03-27 | 江苏百瑞吉新材料有限公司 | Economizing device for boiler |
| CN103047640A (en) * | 2012-12-26 | 2013-04-17 | 淮安万邦香料工业有限公司 | Boiler with heat exchanging device |
| CN104930494A (en) * | 2015-07-29 | 2015-09-23 | 中能世华(北京)节能科技有限公司 | Heat pipe waste heat recovery energy-saving device |
| CN105570872A (en) * | 2016-02-29 | 2016-05-11 | 裴渐强 | Compound heat pipe type smoke deep cooling deaerator |
| CN105570872B (en) * | 2016-02-29 | 2017-06-30 | 裴渐强 | A kind of compound thermal tubular type flue gas deep cooling oxygen-eliminating device |
| CN109029040A (en) * | 2018-07-13 | 2018-12-18 | 北京欧美中科学技术研究院 | A kind of fired oilfield gas injection boiler flue gas comprehensive utilization device |
| CN114850207A (en) * | 2022-03-27 | 2022-08-05 | 森特士兴集团股份有限公司 | In-situ hot water reinforced microorganism coupling soil remediation system |
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Open date: 20090902 |