TW201319499A - System for improving utilization grade of waste heat of flue gas - Google Patents
System for improving utilization grade of waste heat of flue gas Download PDFInfo
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- TW201319499A TW201319499A TW101134044A TW101134044A TW201319499A TW 201319499 A TW201319499 A TW 201319499A TW 101134044 A TW101134044 A TW 101134044A TW 101134044 A TW101134044 A TW 101134044A TW 201319499 A TW201319499 A TW 201319499A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
Description
本發明係關於鍋爐排煙之餘熱回收利用，特別係關於一種提高煙氣餘熱利用品質之系統。 The invention relates to waste heat recovery and utilization of boiler exhaust gas, in particular to a system for improving the utilization quality of flue gas waste heat.
鍋爐排放之煙氣中含有酸性氣體，煙溫高時酸性氣體會以氣態之形式流經鍋爐各受熱面直至於脫硫塔中被除去。當煙溫低於某一溫度時，酸性氣體會與煙氣中之水蒸氣結合成硫酸而腐蝕換熱設備。低溫腐蝕通常出現在空氣預熱器之冷端以及給水溫度低之省煤器中。當受熱面之溫度低於煙氣之酸露點時，煙氣中之水蒸氣及煤燃燒後所生成之三氧化硫(僅為硫之燃料產物之很少一部分)結合成之硫酸會凝結在受熱面上，嚴重腐蝕受熱面。為避免鍋爐尾部受熱面之酸露腐蝕，通常鍋爐排煙溫度設計較高，新鍋爐140℃左右，操作一段時間後往往會高達160℃，此部分煙氣之直接排放造成了很大之能源浪費。 The flue gas emitted by the boiler contains acid gas. When the flue gas temperature is high, the acid gas flows through the heated surfaces of the boiler in a gaseous state until it is removed in the desulfurization tower. When the temperature of the smoke is lower than a certain temperature, the acid gas combines with the water vapor in the flue gas to form sulfuric acid to corrode the heat exchange equipment. Low temperature corrosion typically occurs in the cold end of the air preheater and in the economizer where the feed water temperature is low. When the temperature of the heated surface is lower than the acid dew point of the flue gas, the water vapor in the flue gas and the sulfur trioxide formed by the combustion of the coal (only a small part of the sulfur fuel product) are combined to form a sulfuric acid which will condense in the heat. On the surface, the surface is severely corroded. In order to avoid acid dew corrosion on the heating surface of the boiler tail, the boiler exhaust gas temperature is usually designed to be high. The new boiler is about 140 °C. After operation for a period of time, it tends to be as high as 160 °C. The direct discharge of this part of the flue gas causes a great waste of energy. .
限於煙氣自身之熱能品質較低，現有對此部分煙氣餘熱回收主要為熱管換熱器，單純地將此部分煙氣餘熱用來加熱鍋爐之給風或給水。熱管換熱器係依靠自身內部工作液體相變來實現傳熱之元件。熱管可分為蒸發段、冷凝段兩個部分，當熱源在蒸發段對其供熱時，工質自熱源吸熱汽化變為蒸汽，蒸汽在壓差之作用下沿中間通道高速流向另一端，蒸汽在冷凝段向冷源放出潛熱後冷凝成液體；工質在蒸發段蒸發時，其氣液交界面下凹，形成許多彎月形液 面，產生毛細壓力，液態工質在管芯毛細壓力及重力等之回流動力作用下又返回蒸發段，繼續吸熱蒸發，如此循環往復，工質之蒸發及冷凝便將熱量不斷地自熱端傳遞至冷端。由於熱管係利用工質之相變換熱來傳遞熱量，因此熱管具有很大的傳熱能力及傳熱效率，加之設備本身製造工藝簡單，因此在中小型工業鍋爐上用途較廣。中國實用新型專利CN201107005Y公開一種帶中低壓蒸發器之複合相變換熱器，通過複合相變換熱器吸收空氣預熱器後方之煙氣餘熱來加熱鍋爐給風。 The heat energy of the flue gas itself is low, and the waste heat recovery of the flue gas is mainly a heat pipe heat exchanger, and the waste heat of the flue gas is simply used to heat the feed or feed water of the boiler. A heat pipe heat exchanger is a component that relies on its internal working liquid phase change to achieve heat transfer. The heat pipe can be divided into two parts: the evaporation section and the condensation section. When the heat source supplies heat to the evaporation section, the working fluid is heated and vaporized by the heat source to become steam, and the steam flows along the intermediate channel to the other end under the action of the pressure difference, and the steam After the latent heat is released from the condensing section to the cold source, it is condensed into a liquid; when the working medium evaporates in the evaporation section, the gas-liquid interface is concave, forming many meniscus liquids. The surface generates capillary pressure, and the liquid working fluid returns to the evaporation section under the returning force of the capillary capillary pressure and gravity, and continues to absorb heat and evaporate. Thus, the circulation and reciprocation of the working medium will continuously transfer heat to the hot end. To the cold end. Since the heat pipe uses the phase change heat of the working fluid to transfer heat, the heat pipe has a large heat transfer capacity and heat transfer efficiency, and the manufacturing process of the device itself is simple, so it is widely used in small and medium industrial boilers. The Chinese utility model patent CN201107005Y discloses a composite phase change heat exchanger with a medium and low pressure evaporator, which absorbs the waste heat of the flue gas behind the air preheater through a composite phase change heat device to heat the boiler feed air.
而在某些大的電站鍋爐或熱電聯產鍋爐上，低壓省煤器技術應用更加廣泛，低壓省煤器安裝於鍋爐尾部煙道中，利用汽輪機回熱系統中之低壓加熱器水側之凝結水而非高壓給水來冷卻煙氣，其換熱條件類似於省煤器，但水側之壓力遠遠低於省煤器之壓力，故稱其低壓省煤器。低壓省煤器之安裝使得汽輪機換熱系統得到一份外來熱量，節省了一部分抽汽，很好地回收排煙熱損失，提高了全廠之熱效率。 On some large power station boilers or cogeneration boilers, the low-pressure economizer technology is more widely used. The low-pressure economizer is installed in the flue of the boiler tail, and the condensate on the water side of the low-pressure heater in the steam turbine regenerative system is utilized. Instead of high-pressure feed water to cool the flue gas, the heat exchange conditions are similar to those of the economizer, but the pressure on the water side is much lower than that of the economizer, so it is called the low-pressure economizer. The installation of the low-pressure economizer allows the steam turbine heat exchange system to obtain a piece of external heat, which saves a part of the extraction steam, recovers the heat loss of the exhaust gas well, and improves the thermal efficiency of the whole plant.
然而以上種種均係基於用戶有此種低溫熱能需求才能進行改造，由於煙氣溫度相對較低，其熱能品質有時無法滿足有些用戶之用熱要求，特別係需要用餘熱產生蒸汽之用戶，因此以上技術並不能完全解決鍋爐尾部煙氣餘熱回收利用之問題。 However, all of the above are based on the user's low-temperature thermal energy requirements. Because the temperature of the flue gas is relatively low, the thermal energy quality sometimes cannot meet the heat requirements of some users, especially those who need to generate steam with waste heat. The above technology does not completely solve the problem of waste heat recovery and utilization in the boiler tail.
本發明所要解決之問題為提供一種提高煙氣餘熱利用品 質之系統，克服先前技術中存在之上述問題。 The problem to be solved by the present invention is to provide a waste heat utilization product for improving flue gas. The quality system overcomes the above problems in the prior art.
本發明之一種提高煙氣餘熱利用品質之系統，包括設於鍋爐煙道尾部之空氣預熱器，亦包括煙氣餘熱利用裝置及進風預熱裝置，進風預熱裝置包括相連之吸熱段及放熱段，煙氣餘熱利用裝置及進風預熱裝置之吸熱段前後排列於鍋爐煙道內且位於該空氣預熱器之後方，該放熱段置於空氣預熱器之進風通道中。 The invention relates to a system for improving the utilization quality of flue gas waste heat, comprising an air preheater disposed at the tail of the boiler flue, and a flue gas waste heat utilization device and an inlet air preheating device, wherein the inlet air preheating device comprises a connected heat absorption section And the heat release section, the heat absorption section of the flue gas waste heat utilization device and the air inlet preheating device are arranged in the boiler flue before and after the air preheater, and the heat release section is placed in the air inlet passage of the air preheater.
本發明亦包括控制系統，該吸熱段上設有溫度感測器，該空氣預熱器進風通道之旁路管道中設有風門調節閥，溫度感測器及風門調節閥與控制系統相連。 The invention also includes a control system, the temperature sensing section is provided with a temperature sensor, a damper regulating valve is arranged in the bypass duct of the air preheater inlet passage, and the temperature sensor and the damper regulating valve are connected with the control system.
本發明亦包括控制系統，該吸熱段上設有溫度感測器，在該煙氣餘熱利用裝置之進口管道上設有流量調節閥，溫度感測器及流量調節閥與控制系統相連。 The invention also includes a control system, wherein the heat absorption section is provided with a temperature sensor, and a flow regulating valve is arranged on the inlet pipe of the flue gas waste heat utilization device, and the temperature sensor and the flow regulating valve are connected with the control system.
本發明之鍋爐煙道內亦設有除塵脫硫裝置，該吸熱段設於除塵脫硫裝置之前。 The boiler flue of the present invention is also provided with a dust removal and desulfurization device, and the heat absorption section is arranged before the dust removal and desulfurization device.
本發明之煙氣餘熱利用裝置為餘熱蒸發器、導熱油加熱器或熱水加熱器。 The flue gas waste heat utilization device of the present invention is a waste heat evaporator, a heat transfer oil heater or a hot water heater.
藉由以上技術方案，本發明之提高煙氣餘熱利用品質之系統，藉由加裝在進風通道中之進風預熱裝置之放熱段，使進空氣預熱器之一二次風溫度升高，從而使空氣與煙氣溫差減小，換熱量減小，空氣預熱器出口處溫度升高，一般可升高30℃左右。空氣預熱器進口風溫升高後，雖然空氣預熱器換熱量減少，但空氣預熱器出口風溫並未降低，因此該系統在不影響鍋爐出力之情況下，降低排煙溫度， 同時提高空氣預熱器後方之煙氣餘熱利用品質，且安全回收該部分煙氣餘熱。回收之煙氣餘熱部分加熱鍋爐之給風，利用品味得到提高之煙氣餘熱可用來產生低壓飽和蒸汽，也可用來加熱熱水或加熱導熱油，同時保證各個設備不受酸露腐蝕影響，提高了煙氣餘熱利用率。 According to the above technical solution, the system for improving the utilization quality of flue gas waste heat of the present invention increases the temperature of the secondary air of one of the inlet air preheaters by the heat release section of the air inlet preheating device installed in the air inlet passage. High, so that the air and smoke temperature difference is reduced, the heat exchange amount is reduced, and the temperature at the outlet of the air preheater is increased, generally increasing by about 30 °C. After the air temperature of the air preheater is increased, although the heat exchange capacity of the air preheater is reduced, the air temperature at the outlet of the air preheater is not reduced, so the system reduces the exhaust gas temperature without affecting the output of the boiler. At the same time, the utilization quality of flue gas residual heat behind the air preheater is improved, and the residual heat of the flue gas is safely recovered. The waste heat of the recovered flue gas partially heats the feed air of the boiler, and the waste heat of the flue gas which is improved in taste can be used to generate low-pressure saturated steam, and can also be used for heating hot water or heating the heat-conducting oil, and at the same time ensuring that each equipment is not affected by acid dew corrosion, thereby improving The utilization rate of flue gas waste heat.
如圖1所示，本發明之一種提高煙氣餘熱利用品質系統之一實施例，其包括設於鍋爐煙道尾部之空氣預熱器2，亦包括煙氣餘熱利用裝置3及進風預熱裝置，進風預熱裝置包括相連之吸熱段4及放熱段7，煙氣餘熱利用裝置3及進風預熱裝置之吸熱段前後排列於鍋爐煙道1內且位於空氣預熱器2之後方，其中放熱段7置於空氣預熱器之進風通道8中。 As shown in FIG. 1 , an embodiment of the present invention for improving the flue gas waste heat utilization quality system includes an air preheater 2 disposed at the tail of the boiler flue, and includes a flue gas waste heat utilization device 3 and an intake air preheating. The device, the inlet air preheating device comprises a connected heat absorption section 4 and a heat release section 7, and the heat absorption section of the flue gas waste heat utilization device 3 and the inlet air preheating device are arranged in the boiler flue 1 before and after the air preheater 2 , wherein the heat release section 7 is placed in the air inlet passage 8 of the air preheater.
本發明藉由進風預熱裝置吸熱段4吸收部分煙氣餘熱，並將此部分餘熱藉由放熱段7用於加熱鍋爐一二次風，一二次風溫度升高後，使得空氣預熱器2內煙與風之傳熱溫差減小，傳熱量變小，因此空氣預熱器2出口處之煙溫能提高至180℃左右，可使煙氣餘熱利用裝置3進口煙溫提高30℃左右，提高了進煙氣餘熱利用裝置3之煙氣溫度，即提高了其利用品質。煙氣餘熱利用裝置3位於空氣預熱器2與吸熱段4之間，吸收自空氣預熱器2出來之提高了利用品質之煙氣餘熱。 The invention absorbs part of flue gas residual heat by the heat absorption section 4 of the air preheating device, and uses the heat release part 7 to heat the boiler to a secondary air, and the air is preheated after the temperature of the secondary air rises. The heat transfer temperature difference between the smoke and the wind in the device 2 is reduced, and the heat transfer amount is reduced. Therefore, the temperature of the smoke at the outlet of the air preheater 2 can be increased to about 180 ° C, so that the temperature of the flue gas waste heat utilization device 3 can be increased by 30 ° C. Left and right, the flue gas temperature of the flue gas waste heat utilization device 3 is increased, that is, the utilization quality is improved. The flue gas waste heat utilization device 3 is located between the air preheater 2 and the heat absorption section 4, and is absorbed from the air preheater 2 to improve the waste heat of the utilization flue gas.
為避免各個設備受到酸露腐蝕，本發明亦包括控制系統，空氣預熱器之進風通道8之旁路中設有風門調節閥6， 在吸熱段4上設有溫度感測器5，溫度感測器5及風門調節閥6與控制系統相連。控制系統接收溫度感測器5測得之吸熱段上之壁溫，根據壁溫之高低即時地調節風門調節閥6，以此調節空氣預熱器之進風風量，確保各個設備不受酸露腐蝕。 In order to avoid the acid corrosion of each device, the present invention also includes a control system, and a damper regulating valve 6 is disposed in the bypass of the air inlet passage 8 of the air preheater. A temperature sensor 5 is provided on the heat absorption section 4, and the temperature sensor 5 and the damper regulating valve 6 are connected to the control system. The control system receives the wall temperature on the endothermic section measured by the temperature sensor 5, and instantly adjusts the damper regulating valve 6 according to the height of the wall temperature, thereby adjusting the air volume of the air preheater to ensure that each device is not exposed to acid dew. corrosion.
在鍋爐煙道1內亦設有除塵脫硫裝置，吸熱段4設於除塵脫硫裝置之前，煙氣經過除塵脫硫裝置後流入煙囪排出。 A dust removal and desulfurization device is also arranged in the boiler flue 1, and the heat absorption section 4 is arranged before the dust removal and desulfurization device, and the flue gas flows into the chimney after passing through the dust removal and desulfurization device.
空氣預熱器出口煙溫一般在150℃左右，此煙溫不能被吸收用來產生低壓飽和蒸汽，本發明在空氣預熱器後方之鍋爐煙道中加設煙氣餘熱利用裝置及進風預熱裝置，煙氣之餘熱經進風預熱裝置之吸熱段吸熱，藉由放熱段7在空氣預熱器進風通道中將熱量傳遞給進入空氣預熱器之冷風，冷風吸收熱量後風溫提高，使得空氣預熱器2內煙與風之傳熱溫差減小，傳熱量變小，因此空氣預熱器2出口處之煙溫能提高至180℃左右，使得煙氣餘熱利用裝置3進口煙溫提高了30℃左右，因此該煙溫可被吸收用於產生低壓飽和蒸汽，同時空氣預熱器傳熱量雖然減小，但由於空氣預熱器2進風溫度比原來溫度有所提高，空氣預熱器出口風溫並不會降低。 The air preheater outlet smoke temperature is generally around 150 ° C, the smoke temperature can not be absorbed to generate low pressure saturated steam, the invention adds a flue gas waste heat utilization device and the inlet air preheating in the boiler flue behind the air preheater The heat of the flue gas is absorbed by the heat absorption section of the air preheating device, and the heat is transferred to the cold air entering the air preheater through the heat release section 7 in the air inlet passage of the air preheater, and the air temperature is increased after the cold air absorbs the heat. Therefore, the heat transfer temperature difference between the smoke and the wind in the air preheater 2 is reduced, and the heat transfer amount is reduced, so that the temperature of the smoke at the outlet of the air preheater 2 can be increased to about 180 ° C, so that the flue gas waste heat utilization device 3 imports the smoke. The temperature is increased by about 30 °C, so the temperature of the smoke can be absorbed to generate low-pressure saturated steam, and although the heat transfer amount of the air preheater is reduced, the air temperature of the air preheater 2 is higher than the original temperature, and the air is increased. The preheater outlet air temperature does not decrease.
如圖2所示，本發明之提高煙氣餘熱利用品質系統之另一實施例，與上述實施例的不同之處在於控制系統之具體設計，在吸熱段4上設有溫度感測器5，在煙氣餘熱利用裝置3之進口管道上設有流量調節閥9，溫度感測器5及流量調節閥9與控制系統相連。控制系統接收溫度感測器5測得 之吸熱段上之壁溫，根據壁溫之高低即時地調節流量調節閥，以此調節煙氣餘熱利用裝置之流量來控制其吸收煙氣之溫度，確保各個設備不受酸露腐蝕。 As shown in FIG. 2, another embodiment of the system for improving the flue gas waste heat utilization quality of the present invention differs from the above embodiment in the specific design of the control system, and a temperature sensor 5 is disposed on the heat absorption section 4, A flow regulating valve 9 is disposed on the inlet pipe of the flue gas waste heat utilization device 3, and the temperature sensor 5 and the flow regulating valve 9 are connected to the control system. The control system receives the temperature sensor 5 measured The wall temperature on the heat absorption section adjusts the flow regulating valve instantaneously according to the height of the wall temperature, thereby adjusting the flow rate of the flue gas waste heat utilization device to control the temperature of the smoke absorption, and ensuring that each device is not corroded by acid dew.
本發明在鍋爐煙道1中加設煙氣餘熱利用裝置3，用來吸收提高了品質之煙氣餘熱，煙氣餘熱利用裝置3為煙氣餘熱蒸發器用來產生低壓飽和蒸汽。亦可按客戶要求上述煙氣餘熱利用裝置3為冷水加熱器或導熱油加熱器，來加熱熱水或者導熱油。溫度感測器5測量吸熱段4上之壁面溫度，當壁面溫度小於煙氣之酸露點溫度時，溫度感測器5將信號傳至控制系統，控制系統控制流量調節閥或風門調節閥，以此來調節吸熱段之壁溫，使其始終高於酸露點溫度，確保各個受熱面不受酸露腐蝕影響。 The invention adds a flue gas waste heat utilization device 3 in the boiler flue 1 for absorbing the flue gas residual heat with improved quality, and the flue gas waste heat utilization device 3 is a flue gas waste heat evaporator for generating low pressure saturated steam. The above-mentioned flue gas waste heat utilization device 3 may be a cold water heater or a heat transfer oil heater to heat the hot water or the heat transfer oil. The temperature sensor 5 measures the wall surface temperature on the heat absorption section 4. When the wall temperature is lower than the acid dew point temperature of the flue gas, the temperature sensor 5 transmits a signal to the control system, and the control system controls the flow regulating valve or the damper regulating valve to This adjusts the wall temperature of the endothermic section so that it is always above the acid dew point temperature, ensuring that each heated surface is not affected by acid dew corrosion.
1‧‧‧鍋爐煙道 1‧‧‧Boiler flue
2‧‧‧空氣預熱器 2‧‧‧Air preheater
3‧‧‧煙氣餘熱利用裝置 3‧‧‧Smoke waste heat utilization device
4‧‧‧吸熱段 4‧‧‧heating section
5‧‧‧溫度感測器 5‧‧‧temperature sensor
6‧‧‧風門調節閥 6‧‧‧ damper control valve
7‧‧‧放熱段 7‧‧‧heating section
8‧‧‧進風通道 8‧‧‧Inlet passage
9‧‧‧流量調節閥 9‧‧‧Flow regulating valve
圖1為本發明之提高煙氣餘熱利用品質之系統之一實施例結構圖。 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural view showing an embodiment of a system for improving the utilization of flue gas waste heat in the present invention.
圖2為本發明之提高煙氣餘熱利用品質之系統之另一實施例結構圖。 Fig. 2 is a structural view showing another embodiment of the system for improving the utilization of waste heat of the present invention.
1‧‧‧鍋爐煙道 1‧‧‧Boiler flue
2‧‧‧空氣預熱器 2‧‧‧Air preheater
3‧‧‧煙氣餘熱利用裝置 3‧‧‧Smoke waste heat utilization device
4‧‧‧吸熱段 4‧‧‧heating section
5‧‧‧溫度感測器 5‧‧‧temperature sensor
6‧‧‧風門調節閥 6‧‧‧ damper control valve
7‧‧‧放熱段 7‧‧‧heating section
8‧‧‧進風通道 8‧‧‧Inlet passage
Claims (7)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102790491A CN102997262A (en) | 2011-09-19 | 2011-09-19 | System for improving utilization grade of flue gas afterheat |
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| Publication Number | Publication Date |
|---|---|
| TW201319499A true TW201319499A (en) | 2013-05-16 |
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| TW101134044A TW201319499A (en) | 2011-09-19 | 2012-09-17 | System for improving utilization grade of waste heat of flue gas |
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| Country | Link |
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| CN (1) | CN102997262A (en) |
| TW (1) | TW201319499A (en) |
| WO (1) | WO2013040977A1 (en) |
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| CN103344140B (en) * | 2013-06-26 | 2014-04-09 | 山东荷能节能环保科技有限公司 | Device and method for exhaust steam waste heat recovery and pollution abatement in aluminum oxide production |
| CN104728826A (en) * | 2015-03-19 | 2015-06-24 | 中国华能集团清洁能源技术研究院有限公司 | Constant temperature economizer |
| KR101682229B1 (en) * | 2016-07-11 | 2016-12-02 | 박인규 | Heat exchanger using waste heat |
| CN106764995A (en) * | 2016-12-13 | 2017-05-31 | 中海油节能环保服务有限公司 | A kind of heat pipe type waste heat reclaiming device |
| CN106765288B (en) * | 2017-03-03 | 2023-07-18 | 山西大学 | Graded heat exchange system of rotary air preheater of power station boiler |
| CN109882877B (en) * | 2018-04-14 | 2020-04-28 | 青岛科技大学 | Flue gas waste heat utilization and automatic pollutant control system |
| CN108443904A (en) * | 2018-04-19 | 2018-08-24 | 北京中矿赛力贝特节能科技有限公司 | A kind of power-plant flue gas based on heat pipe heat exchanging technology disappears white system |
| CN110925744B (en) * | 2019-12-11 | 2021-09-17 | 中国能源建设集团广东省电力设计研究院有限公司 | System for recycling bypass flue gas heat from heat conducting oil of cold flue gas recirculation unit and control method |
| CN110925745B (en) * | 2019-12-11 | 2021-09-17 | 中国能源建设集团广东省电力设计研究院有限公司 | Novel efficiency improving system of cold smoke recycling unit and control method |
| CN111238039A (en) * | 2020-03-17 | 2020-06-05 | 中国华能集团清洁能源技术研究院有限公司 | Boiler low-temperature corrosion prevention device with heat conduction oil for heat storage and working method |
| CN112555882B (en) * | 2020-11-25 | 2023-05-09 | 希斯芮环境设备工程(连云港)有限公司 | Energy-saving heat exchange device for chimney |
| CN112944902B (en) * | 2021-02-01 | 2023-05-30 | 湖北中超化工科技有限公司 | Sintering furnace convenient for recycling residual heat and utilization method thereof |
| CN114892287B (en) * | 2022-06-10 | 2023-05-23 | 浙江锦盛控股集团有限公司 | Production method and processing equipment of ultra-soft superfine denier nylon FDY porous yarn |
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| SU1359572A1 (en) * | 1985-12-09 | 1987-12-15 | Белорусское Отделение Всесоюзного Государственного Научно-Исследовательского И Проектно-Конструкторского Института Энергетической Промышленности | Air heater |
| CN1206473C (en) * | 2002-08-21 | 2005-06-15 | 杨本洛 | Mixed composite phase change heat exchanger |
| CN1920387A (en) * | 2006-09-05 | 2007-02-28 | 山东大学 | Low-pressure coal saver for boiler |
| CN201107005Y (en) * | 2007-09-28 | 2008-08-27 | 杨本洛 | Composite phase change heat exchanger with middle and low voltage evaporator |
| CN101398267A (en) * | 2007-09-28 | 2009-04-01 | 杨本洛 | Internal circulation composite phase change heat exchanger |
| CN101634457A (en) * | 2009-08-19 | 2010-01-27 | 深圳中兴科扬节能环保股份有限公司 | Flue-gas waste heat reclaiming system |
| CN202274500U (en) * | 2011-09-19 | 2012-06-13 | 上海康洪精密机械有限公司 | System for improving utilization grade of waste heat of flue gas |
-
2011
- 2011-09-19 CN CN2011102790491A patent/CN102997262A/en active Pending
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- 2012-08-27 WO PCT/CN2012/080624 patent/WO2013040977A1/en active Application Filing
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| CN102997262A (en) | 2013-03-27 |
| WO2013040977A1 (en) | 2013-03-28 |
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