CN105822374A - Sealing system applied to organic Rankine cycle - Google Patents
Sealing system applied to organic Rankine cycle Download PDFInfo
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- CN105822374A CN105822374A CN201610346486.3A CN201610346486A CN105822374A CN 105822374 A CN105822374 A CN 105822374A CN 201610346486 A CN201610346486 A CN 201610346486A CN 105822374 A CN105822374 A CN 105822374A
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- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 44
- 238000002955 isolation Methods 0.000 claims abstract description 11
- 230000009467 reduction Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000001179 sorption measurement Methods 0.000 claims description 46
- 230000008929 regeneration Effects 0.000 claims description 13
- 238000011069 regeneration method Methods 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 43
- 239000012530 fluid Substances 0.000 description 12
- 239000002918 waste heat Substances 0.000 description 7
- 238000010248 power generation Methods 0.000 description 5
- 239000003463 adsorbent Substances 0.000 description 4
- 239000002440 industrial waste Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/06—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using mixtures of different fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
本发明所设计的应用于有机朗肯循环的密封系统，包括蒸发器、膨胀机、发电机、第一冷凝器、工质泵，其特征是蒸发器、膨胀机、第一冷凝器、工质泵依次组成闭环循环，膨胀机通过减速箱与发电机链接，且膨胀机和减速箱之间依次设有前置密封、干气密封和后置密封，前置密封上设有工艺气进气口，后置密封上设有隔离气进气口，干气密封上设有泄漏气引出管道，泄漏气引出管道的另一端与回收装置连接，回收装置的冷凝液出口与第一冷凝器连接。这种结构的特点是利用前置密封、后置密封以及干气密封达到良好的密封效果。
The sealing system applied to the organic Rankine cycle designed by the present invention includes an evaporator, an expander, a generator, a first condenser, and a working medium pump, and is characterized in that the evaporator, the expander, the first condenser, and the working medium The pumps form a closed-loop cycle in turn, and the expander is connected to the generator through the reduction box, and the front seal, the dry gas seal and the rear seal are arranged in sequence between the expander and the reduction box, and the process gas inlet is provided on the front seal , the rear seal is provided with an isolation gas inlet, and the dry gas seal is provided with a leakage gas outlet pipe, the other end of the leakage gas outlet pipe is connected to the recovery device, and the condensate outlet of the recovery device is connected to the first condenser. The characteristic of this structure is to use front seal, rear seal and dry gas seal to achieve good sealing effect.
Description
技术领域 technical field
本发明涉及余热发电技术领域，尤其涉及一种应用于有机朗肯循环的密封系统。 The invention relates to the technical field of waste heat power generation, in particular to a sealing system applied to an organic Rankine cycle.
背景技术 Background technique
节能减排、提高能源利用率是我国能源发展战略的重要内容。我国工业余热资源丰富，回收利用工业余热是节能减排工作的重点。传统的利用余热蒸汽驱动蒸汽轮机发电的方法适用于高、中温余热的回收利用，对于各工业领域存在的大量低温余热资源缺乏有效的技术手段进行回收发电。 Energy conservation, emission reduction and improvement of energy utilization are important contents of my country's energy development strategy. my country is rich in industrial waste heat resources, and recycling industrial waste heat is the focus of energy conservation and emission reduction work. The traditional method of using waste heat steam to drive a steam turbine to generate electricity is suitable for the recovery and utilization of high and medium temperature waste heat. There is no effective technical means for recycling and power generation of a large number of low-temperature waste heat resources in various industrial fields.
基于有机介质的低温工业余热发电技术属于热功转换技术，如有机工质朗肯循环（简称ORC）、Kalina循环，ORC是以低沸点有机物为工质的朗肯循环，可回收不同温度范围的低温热能，采用这种发电方式对低温范围内余热利用有显著优点，系统冷端基本维持正压，无需设置系统冷端真空维持系统，系统工作压力低，减小透平尺寸和管材消耗，有机工质基本都是等熵工质或干流体，无需过热处理，不会在有水滴、高速情况下对透平机械的叶片造成冲击损害。从技术发展看，低温有机朗肯循环技术是利用低温工业余热、地热和太阳能的经济有效方案。 The low-temperature industrial waste heat power generation technology based on organic media belongs to thermal power conversion technology, such as organic working fluid Rankine cycle (ORC for short) and Kalina cycle. Low-temperature thermal energy, the use of this power generation method has significant advantages for the utilization of waste heat in the low-temperature range. The cold end of the system basically maintains a positive pressure, and there is no need to install a vacuum maintenance system at the cold end of the system. The working pressure of the system is low, and the turbine size and pipe consumption are reduced. Organic The working medium is basically isentropic working medium or dry fluid, without overheating treatment, and will not cause impact damage to the blades of the turbomachinery under the condition of water droplets and high speed. From the perspective of technological development, low-temperature organic Rankine cycle technology is an economical and effective solution for utilizing low-temperature industrial waste heat, geothermal and solar energy.
ORC一般采用不同低沸点有机物（或者混合物）作为工质，很多有机工质都具有不同程度的大气臭氧破坏能力和温室效应，或存在毒性、易燃易爆性、对设备管道的腐蚀性等。工质的泄漏一方面对环保性和安全性造成危害，另一方面造成机组运行成本的增加，同时系统中如果混入不凝性气体，冷凝器丧失高效的冷凝能力，同时提高冷凝压力，冷凝器压力升高会降低膨胀机做功能力，可见密封系统在有机朗肯循环发电系统中有着至关重要的作用。 ORC generally uses different low-boiling organic substances (or mixtures) as working fluids. Many organic working fluids have varying degrees of atmospheric ozone destruction ability and greenhouse effect, or are toxic, flammable and explosive, and corrosive to equipment and pipelines. On the one hand, the leakage of working fluid will cause harm to environmental protection and safety, on the other hand, it will increase the operating cost of the unit. At the same time, if non-condensable gas is mixed in the system, the condenser will lose its efficient condensing ability, and at the same time increase the condensing pressure. The increase in pressure will reduce the working ability of the expander, so it can be seen that the sealing system plays a vital role in the organic Rankine cycle power generation system.
现有技术中，常用机械密封作为膨胀机的轴封，然而机械密封无法适应较高线速度的密封要求，同时由于机械密封存在工质气体与润滑油污染可能性，较高的密封功率消耗和密封寿命较短等缺陷，无法完全胜任有机朗肯循环的密封要求。 In the prior art, mechanical seals are commonly used as shaft seals for expanders. However, mechanical seals cannot meet the sealing requirements of higher linear speeds. At the same time, due to the possibility of working gas and lubricating oil contamination in mechanical seals, higher sealing power consumption and Due to defects such as short seal life, it cannot fully meet the sealing requirements of the organic Rankine cycle.
发明内容 Contents of the invention
为了解决上述问题，本发明提供了一种密封效果好，并能有效解决工质泄漏问题的应用于有机朗肯循环的密封系统。 In order to solve the above problems, the present invention provides a sealing system applied to an organic Rankine cycle, which has a good sealing effect and can effectively solve the problem of working medium leakage.
为了达到上述目的，本发明所设计的应用于有机朗肯循环的密封系统，包括蒸发器、膨胀机、发电机、第一冷凝器、工质泵，其特征是蒸发器、膨胀机、第一冷凝器、工质泵依次组成闭环循环，膨胀机通过减速箱与发电机链接，且膨胀机和减速箱之间依次设有前置密封、干气密封和后置密封，前置密封上设有工艺气进气口，后置密封上设有隔离气进气口，干气密封上设有泄漏气引出管道，泄漏气引出管道的另一端与回收装置连接，回收装置的冷凝液出口与第一冷凝器连接。这种结构的特点是利用前置密封、后置密封以及干气密封达到良好的密封效果。 In order to achieve the above object, the sealing system designed by the present invention and applied to the organic Rankine cycle includes an evaporator, an expander, a generator, a first condenser, and a working medium pump, and is characterized in that the evaporator, the expander, the first The condenser and the working medium pump form a closed-loop cycle in sequence. The expander is connected to the generator through the reduction box, and the front seal, the dry gas seal and the rear seal are arranged in sequence between the expander and the reduction box. The process gas inlet is provided with an isolation gas inlet on the rear seal, and a leak gas outlet pipe is provided on the dry gas seal. The other end of the leak gas outlet pipe is connected to the recovery device, and the condensate outlet of the recovery device is connected to the first Condenser connection. The characteristic of this structure is to use front seal, rear seal and dry gas seal to achieve good sealing effect.
为了延长密封部件的使用寿命，所述的前置密封和后置密封为非接触式密封结构。其中非接触密封结构可以是梳齿密封或迷宫密封，从而能够有效的增加使用寿命，并减少漏气量。 In order to prolong the service life of the sealing parts, the front seal and the rear seal are non-contact sealing structures. The non-contact sealing structure can be a comb seal or a labyrinth seal, which can effectively increase the service life and reduce air leakage.
更进一步的方案是，所述的回收装置由制冷循环结构、回收室和吸附循环结构组成，其中吸附循环结构设有两组相互并联；所述的回收室上设有泄漏气进口、冷凝液出口和隔离气出口，其中泄漏气进口与泄漏气引出管连接，冷凝液出口通过浮球阀与第一冷凝器连接，隔离气出口依次通过回收室排空阀、排空压缩机与吸附循环结构连接；所述的制冷循环结构由依次由第二冷凝器、膨胀阀、热交换器、温度传感器、制冷压缩机闭环组成，其中热交换器设置在回收室内部；所述的吸附循环结构包括吸附罐，在吸附罐上设有排空进气口、排空出气口和再生出气口，在吸附罐内设有热交换器，其中排空进气口通过排空前置阀与排空压缩机连接，排空出气口与排空电磁阀连接，再生出气口通过再生电磁阀与第一冷凝器连接。其中所述的回收室的冷凝液出口与第一冷凝器连接设有启动泵。所述的温度传感器通过控制芯片与回收室排空阀、前置电磁阀电连接。 A further solution is that the recovery device is composed of a refrigeration cycle structure, a recovery chamber and an adsorption cycle structure, wherein the adsorption cycle structure is provided with two groups connected in parallel; the recovery chamber is provided with a leakage gas inlet and a condensate outlet And the isolation gas outlet, wherein the leakage gas inlet is connected to the leakage gas outlet pipe, the condensate outlet is connected to the first condenser through the float valve, and the isolation gas outlet is connected to the adsorption cycle structure through the recovery chamber exhaust valve and the exhaust compressor in turn; The refrigeration cycle structure is sequentially composed of a second condenser, an expansion valve, a heat exchanger, a temperature sensor, and a closed-loop refrigeration compressor, wherein the heat exchanger is arranged inside the recovery chamber; the adsorption cycle structure includes an adsorption tank, The adsorption tank is provided with an exhaust inlet, an exhaust outlet and a regeneration outlet, and a heat exchanger is arranged inside the adsorption tank, wherein the exhaust inlet is connected to the exhaust compressor through the exhaust pre-valve. The exhaust air outlet is connected to the exhaust electromagnetic valve, and the regeneration air outlet is connected to the first condenser through the regeneration electromagnetic valve. Wherein the condensate outlet of the recovery chamber is connected with the first condenser and provided with a starting pump. The temperature sensor is electrically connected with the recovery chamber emptying valve and the front solenoid valve through the control chip.
通过回收装置能对泄漏气体进行进一步的处理，吸附循环结构能有效的吸附泄漏气中的有机工质，并输送回有机朗肯循环。同时并联的两组吸附循环结构能达到一备一用的效果，在一组吸附循环结构需要进行吸附再生时，另一组能直接并线使用。 The leakage gas can be further processed through the recovery device, and the adsorption cycle structure can effectively absorb the organic working fluid in the leakage gas and send it back to the organic Rankine cycle. Two sets of adsorption cycle structures connected in parallel at the same time can achieve the effect of one backup and one use. When one set of adsorption cycle structures needs to be adsorbed and regenerated, the other set can be directly used in parallel.
本发明所的得到的应用于有机朗肯循环的密封系统，整个循环系统使用了有效的非接触密封，具有密封好，泄漏少的特点。同时对泄漏气进行了回收再生，将泄漏气中带出的有机工质完全吸附回收，并回输到有机朗肯循环中。同时还具有一备一用两套吸附循环结构，使得再生的过程不影响有机朗肯循环的运行。进一步的，在回收装置内设有一系列的自动化处理，通过浮球阀控制回收室内冷凝液的回收，通过温度传感器自动控制吸附循环结构的启动，有效的达到节能效果。 The sealing system obtained by the present invention is applied to the organic Rankine cycle, and the whole cycle system uses effective non-contact sealing, which has the characteristics of good sealing and less leakage. At the same time, the leaked gas is recovered and regenerated, and the organic working fluid carried out in the leaked gas is completely absorbed and recovered, and returned to the organic Rankine cycle. At the same time, it also has two sets of adsorption cycle structures, one for standby and one for use, so that the regeneration process does not affect the operation of the organic Rankine cycle. Furthermore, a series of automatic processes are installed in the recovery device, the recovery of condensate in the recovery chamber is controlled by the float valve, and the start of the adsorption cycle structure is automatically controlled by the temperature sensor, effectively achieving energy saving effects.
附图说明 Description of drawings
图1是有机朗肯循环密封系统示意图。 Figure 1 is a schematic diagram of an organic Rankine cycle sealing system.
图2是回收装置示意图。 Figure 2 is a schematic diagram of the recovery device.
具体实施方式 detailed description
下面通过实施例结合附图对本发明作进一步的描述。 The present invention will be further described below with reference to the accompanying drawings.
实施例1。Example 1.
如图1、图2所示，本实施例描述的一种应用于有机朗肯循环的密封系统，包括蒸发器A、膨胀机B、发电机E、第一冷凝器I、工质泵J和回收装置H，所述的膨胀机B和发电机J通过减速箱D相连，膨胀机B和减速箱D之间布置有前置密封F、干气密封C和后置密封G，前置密封F和后置密封G为梳齿密封或迷宫密封等非接触式密封，干气密封为单端面密封，可选择双端面或串联式的，进一步减少泄漏量。在前置密封F通入工艺气，在后置密封G通入隔离气体如氮气，经干气密封C后的泄漏气通过泄漏气引出管K引入到回收装置H中，回收装置H处理后有机工质冷凝液回到第一冷凝器I中。 As shown in Fig. 1 and Fig. 2, a sealing system applied to an organic Rankine cycle described in this embodiment includes an evaporator A, an expander B, a generator E, a first condenser I, a working medium pump J and The recovery device H, the expander B and the generator J are connected through a reduction box D, and a front seal F, a dry gas seal C and a rear seal G are arranged between the expander B and the reduction box D, and the front seal F And the rear seal G is a non-contact seal such as a comb seal or a labyrinth seal. The dry gas seal is a single-end seal, and double-end or tandem seals can be selected to further reduce leakage. The process gas is fed into the front seal F, and the isolation gas such as nitrogen is fed into the rear seal G. The leakage gas after the dry gas seal C is introduced into the recovery device H through the leakage gas outlet pipe K, and the organic The working medium condensate returns in the first condenser I.
所述的回收装置H包括回收室7、制冷循环结构和吸附循环结构组成，其中吸附循环结构有两组相互并联。所述的回收室7上设有泄漏气进口、冷凝液出口和隔离气出口，其中泄漏气进口与泄漏气引出管连接，冷凝液出口通过浮球阀8以及启动泵17与第一冷凝器I连接，隔离气出口依次通过回收室排空阀6、排空压缩机5与吸附循环结构连接。 The recovery device H includes a recovery chamber 7, a refrigeration cycle structure and an adsorption cycle structure, wherein two groups of the adsorption cycle structures are connected in parallel. The recovery chamber 7 is provided with a leakage gas inlet, a condensate outlet and an isolation gas outlet, wherein the leakage gas inlet is connected to the leakage gas outlet pipe, and the condensate outlet is connected to the first condenser 1 through a float valve 8 and a starting pump 17 , the isolated gas outlet is connected to the adsorption cycle structure through the recovery chamber exhaust valve 6 and the exhaust compressor 5 in sequence.
制冷循环由制冷压缩机10、膨胀阀9、第二冷凝器11和温度传感器16组成，热交换器设置在回收室7内构成蒸发室，制冷压缩机10启动运行后，降低进入回收室7中泄漏气的温度和压力，泄漏气中的有机工质被冷凝成液态并滴落到回收室7的底部，而泄漏气中的隔离气由于沸点较低，在回收室7中不断积累。回收室7中装有浮球阀8，当冷凝液积累一定液位时，启动泵17将液体抽送到第一冷凝器I中。当回收室中的隔离气量大到开始影响回收室7中换热器的有效传热面积时，温度传感器16所感应的温度开始下降，当达到设定值时，回收室排空阀6打开，排空压缩机5将回收室中的隔离气抽取出来输送到吸附循环结构中，随着回收室7中的隔离气不断减少，温度传感器16所感应的温度上升，当达到设定值时，回收室排空阀6关闭，排空压缩机5停止运行。 The refrigeration cycle is composed of a refrigeration compressor 10, an expansion valve 9, a second condenser 11 and a temperature sensor 16. The heat exchanger is arranged in the recovery chamber 7 to form an evaporation chamber. After the refrigeration compressor 10 starts running, it lowers into the recovery chamber 7. Due to the temperature and pressure of the leakage gas, the organic working fluid in the leakage gas is condensed into a liquid state and drops to the bottom of the recovery chamber 7, while the isolation gas in the leakage gas accumulates in the recovery chamber 7 due to its low boiling point. Float valve 8 is housed in recovery chamber 7, and when condensed liquid accumulates certain liquid level, start pump 17 and liquid is pumped in the first condenser 1. When the amount of isolated gas in the recovery chamber is large enough to affect the effective heat transfer area of the heat exchanger in the recovery chamber 7, the temperature sensed by the temperature sensor 16 begins to drop, and when the set value is reached, the recovery chamber emptying valve 6 is opened, Evacuate the compressor 5 to extract the isolated gas in the recovery chamber and send it to the adsorption cycle structure. As the isolated gas in the recovery chamber 7 continues to decrease, the temperature sensed by the temperature sensor 16 rises. When it reaches the set value, the recovered The chamber emptying valve 6 is closed, and the emptying compressor 5 stops running.
所述的吸附循环结构，有两组均分别包括吸附罐，吸附罐中含有能有效吸附有机工质的吸附剂如碳等，根据工质不同选择不同的有效吸附剂种类。在吸附罐上设有排空进气口、排空出气口和再生出气口，在吸附罐内设有热交换器。其中第一吸附罐12的其中排空进气口通过第一排空前置阀14与排空压缩机5连接，排空出气口与第一排空电磁阀1连接，再生出气口通过第一再生电磁阀2与第一冷凝器连接；第二吸附罐13的其中排空进气口通过第二排空前置阀15与排空压缩机5连接，排空出气口与第二排空电磁阀4连接，再生出气口通过第二再生电磁阀3与第二冷凝器连接 In the adsorption cycle structure, two groups include adsorption tanks respectively, and the adsorption tanks contain adsorbents such as carbon that can effectively adsorb organic working fluids, and different types of effective adsorbents are selected according to different working fluids. An exhaust air inlet, an exhaust air outlet and a regeneration air outlet are arranged on the adsorption tank, and a heat exchanger is arranged inside the adsorption tank. Wherein the evacuation air inlet of the first adsorption tank 12 is connected with the evacuation compressor 5 through the first evacuation pre-valve 14, the evacuation air outlet is connected with the first evacuation electromagnetic valve 1, and the regeneration air outlet is through the first evacuation air outlet. The regenerative solenoid valve 2 is connected to the first condenser; the evacuation inlet of the second adsorption tank 13 is connected to the evacuation compressor 5 through the second evacuation pre-valve 15, and the evacuation outlet is connected to the second evacuation solenoid The valve 4 is connected, and the regeneration gas outlet is connected to the second condenser through the second regeneration solenoid valve 3
排空阶段，第一吸附罐前置电磁阀14打开，第一吸附罐排空电磁阀1打开，排空压缩机5将回收室中的气体输送到第一吸附罐（12）中，第一吸附罐（12）将被排放的气体可能带走的有机工质分子吸收后，将隔离气排空，当第一吸附罐（12）经多次排空吸附后，为了维持吸收效率，需要进行吸附能力再生，此时，隔离气排空的功能由第二吸附罐13承担。第一吸附罐12再生时，将所有与第一吸附罐12相连的电磁阀关闭，将余热热源引入到第一吸附罐12中，加热第一吸附罐12，使吸附在吸附剂上的有机工质分子脱离吸附剂，保持第一吸附罐12温度一定时间，打开第一吸附罐12的再生电磁阀2，将罐内的有机工质气体排入到第一冷凝器I中，关闭余热热源，自然冷却后，当第一吸附罐12需要排空时，打开冷却水，降低第一吸附罐12的温度，提高对有机工质的吸附能力。通过两个吸附罐相互切换，完成排空、再生和有机工质回收的连续功能。 In the emptying stage, the front electromagnetic valve 14 of the first adsorption tank is opened, the electromagnetic valve 1 for emptying the first adsorption tank is opened, and the exhaust compressor 5 transports the gas in the recovery chamber to the first adsorption tank (12). After the adsorption tank (12) absorbs the organic working substance molecules that may be taken away by the discharged gas, the isolation gas is emptied. After the first adsorption tank (12) has been emptied and adsorbed for many times, in order to maintain the absorption efficiency, it is necessary to carry out The adsorption capacity is regenerated. At this time, the function of separating the gas to be evacuated is assumed by the second adsorption tank 13 . When the first adsorption tank 12 is regenerated, all the solenoid valves connected to the first adsorption tank 12 are closed, the waste heat heat source is introduced into the first adsorption tank 12, and the first adsorption tank 12 is heated to make the organic matter adsorbed on the adsorbent The mass molecule is separated from the adsorbent, the temperature of the first adsorption tank 12 is kept for a certain period of time, the regeneration solenoid valve 2 of the first adsorption tank 12 is opened, the organic working fluid gas in the tank is discharged into the first condenser 1, and the waste heat heat source is closed. After natural cooling, when the first adsorption tank 12 needs to be emptied, the cooling water is turned on to reduce the temperature of the first adsorption tank 12 and improve the adsorption capacity of the organic working fluid. The continuous functions of emptying, regeneration and recovery of organic working medium are completed by switching between the two adsorption tanks.
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Address after: 11th Floor, Block A, No. 68 Qingchun East Road, Hangzhou City, Zhejiang Province, 310016 Patentee after: Hangzhou Steam Turbine Holding Co.,Ltd. Address before: 11th Floor, Block A, No. 68 Qingchun East Road, Hangzhou City, Zhejiang Province, 310016 Patentee before: HANGZHOU TURBINE POWER GROUP CO.,LTD. |