CN106757133B - Heat exchange device and method for producing hydrogen by using ion membrane method caustic soda - Google Patents
Heat exchange device and method for producing hydrogen by using ion membrane method caustic soda Download PDFInfo
- Publication number
- CN106757133B CN106757133B CN201611264532.1A CN201611264532A CN106757133B CN 106757133 B CN106757133 B CN 106757133B CN 201611264532 A CN201611264532 A CN 201611264532A CN 106757133 B CN106757133 B CN 106757133B
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- heat exchanger
- pipeline
- temperature
- sent
- 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.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/14—Alkali metal compounds
- C25B1/16—Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to the technical field of hydrogen production by using an ion membrane method caustic soda, in particular to a heat exchange device and a method for producing hydrogen by using the ionic membrane method caustic soda. The invention ensures that the vapor contained in the low-temperature hydrogen sent by the hydrogen treatment process is not easy to condense and freeze, ensures the smoothness of a pipeline and the flexible action of a valve, also avoids the fluctuation of the flow to influence the measurement of a flowmeter, and on the other hand, realizes the energy recovery and utilization, saves the energy consumption, can select a proper operation mode according to different working conditions, and has strong adaptability.
Description
Technical Field
The invention relates to the technical field of hydrogen production by using ion membrane method caustic soda, in particular to a heat exchange device and a heat exchange method for hydrogen production by using ion membrane method caustic soda.
Background
In the production process of caustic soda by an ion membrane method, a cathode system of an ion membrane electrolytic cell generates sodium hydroxide and hydrogen, the hydrogen is discharged from the top after being separated by a suspension separator, and the temperature of the generated hydrogen in the production process is 60-80 ℃. The hydrogen is sent to a hydrogen treatment process (as shown in figure 1), cooled by a hydrogen washing tower, sodium hydroxide is removed, and then the hydrogen is pressurized, cooled and demisted by a front heat exchanger, a hydrogen compressor and a rear heat exchanger (the temperature is controlled to be about 13 ℃), and then the hydrogen is conveyed to the synthesis of hydrogen chloride. The temperature difference is great day and night in Xinjiang, the temperature is lower in winter, and when hydrogen is conveyed to a hydrogen chloride synthesis device from a hydrogen treatment process, water vapor contained in the hydrogen is easy to freeze after being condensed, so that the problems of blockage of a drain pipe, no action of a valve, fluctuation of a flowmeter and the like are caused.
Disclosure of Invention
The invention provides a heat exchange device and a heat exchange method for producing hydrogen by using caustic soda through an ion membrane method, which overcome the defects of the prior art and can effectively solve the problems of drain pipe blockage, valve inaction and flow meter fluctuation caused by the fact that water vapor contained in hydrogen is easy to freeze when the hydrogen is conveyed to a hydrogen chloride synthesis device from a hydrogen treatment process in the process of producing the hydrogen by using a cathode system of an ion membrane electrolytic cell at present.
One of the technical schemes of the invention is realized by the following measures: a heat exchange device for producing hydrogen by using caustic soda through an ion membrane method comprises an electrolytic wet hydrogen feeding pipe, a hydrogen washing tower, a hydrogen washing liquid cooler, a front heat exchanger, a hydrogen compressor, a rear heat exchanger and a hydrogen demister, wherein a hydrogen outlet of the hydrogen washing tower, an air inlet of the front heat exchanger, an air outlet of the front heat exchanger, an air inlet of the hydrogen compressor, an air outlet of the hydrogen compressor, an air inlet of the rear heat exchanger, an air outlet of the rear heat exchanger and an air inlet of the hydrogen demister are sequentially communicated, a washing liquid inlet and a washing liquid outlet of the hydrogen washing tower are respectively communicated with a washing liquid outlet and a washing liquid inlet of the hydrogen washing liquid cooler, the heat exchange device is characterized by further comprising a heat exchanger, a mutually isolated refrigerant channel and a heat medium channel are arranged in the heat exchanger, and an air outlet of the hydrogen demister is communicated with the refrigerant inlet of, a hydrogen dehydrochlorination synthesis pipeline is communicated with a refrigerant outlet of the heat exchanger, a second pipeline is communicated between the electrolytic wet hydrogen feeding pipe and a heat medium inlet of the heat exchanger, and a third pipeline is communicated between the electrolytic wet hydrogen feeding pipe between the second pipeline and the hydrogen washing tower and a heat medium outlet of the heat exchanger.
The following is a further optimization or/and improvement of one of the above-mentioned technical solutions of the invention:
and a valve is connected in series on the electrolytic wet hydrogen feeding pipe between the second pipeline and the third pipeline.
The second technical scheme of the invention is realized by the following measures: the heat exchange method for producing hydrogen by using the ion membrane method caustic soda and the heat exchange device for producing hydrogen by using the ion membrane method caustic soda has two operation modes, namely: the valve is opened, a part of the electrolyzed wet hydrogen is sent into the hydrogen washing tower through the electrolyzed wet hydrogen feeding pipe, and is sent into a refrigerant channel of the heat exchanger through a first pipeline after sequentially passing through the cooling washing of the hydrogen washing tower, the cooling of a heat exchanger in front of the machine, the compression of a hydrogen compressor, the cooling of a heat exchanger in back of the machine and the demisting of a hydrogen demister, the other part of the electrolyzed wet hydrogen is sent into a heat medium channel of the heat exchanger through the electrolyzed wet hydrogen feeding pipe and a second pipeline, after the heat exchange is carried out between the low-temperature hydrogen in the refrigerant channel and the high-temperature hydrogen in the heat medium channel in the heat exchanger, the temperature of the hydrogen in the refrigerant channel is raised and is sent to the next unit through a hydrogen dehydrochlorination synthesis pipeline, and the temperature of the hydrogen in the heat medium channel is reduced and is mixed with the hydrogen in the electrolyzed wet hydrogen feeding pipe through a third pipeline; and a second mode: the valve is closed, the electrolytic wet hydrogen is firstly sent into a heat medium channel of the heat exchanger through an electrolytic wet hydrogen feeding pipe and a second pipeline, then sent into a hydrogen washing tower through a third pipeline and an electrolytic wet hydrogen feeding pipe, and sent into a refrigerant channel of the heat exchanger through a first pipeline after sequentially cooling and washing of the hydrogen washing tower, cooling of the heat exchanger before the machine, compression of a hydrogen compressor, cooling of the heat exchanger after the machine and demisting of a hydrogen demister, at the moment, after heat exchange is carried out between low-temperature hydrogen in the refrigerant channel and high-temperature hydrogen in the heat medium channel in the heat exchanger, the temperature of the hydrogen in the refrigerant channel is increased, and the hydrogen is sent to the next unit through a hydrogen dehydrochlorination synthesis pipeline, and the temperature of the hydrogen in the heat medium channel is reduced and sent into the hydrogen washing tower through the third pipeline and the electrolytic wet hydrogen feeding pipe.
The invention adds a heat exchange link on the basis of the existing hydrogen treatment process for producing hydrogen by using the caustic soda with an ion membrane method, increases the temperature of low-temperature hydrogen treated by the hydrogen treatment process and decreases the temperature of high-temperature wet hydrogen not treated by the hydrogen treatment process by additionally arranging the heat exchanger, on one hand, the water vapor contained in the low-temperature hydrogen sent by the hydrogen treatment process after the temperature is increased is not easy to condense and freeze, the smoothness of a pipeline and the flexible action of a valve are ensured, and the influence on the measurement of a flowmeter due to the fluctuation of the flow is avoided, on the other hand, the energy recycling is realized, the loads of a hydrogen washing liquid cooler, a front heat exchanger and a rear heat exchanger in the hydrogen treatment process can be reduced after the high-temperature wet hydrogen with the decreased temperature enters the hydrogen treatment process, the energy consumption is saved, and meanwhile, a proper operation mode can be, and the adaptability is strong.
Drawings
FIG. 1 is a schematic process flow diagram of a hydrogen treatment process in the prior art.
FIG. 2 is a schematic process flow diagram of the present invention.
The codes in the figure are respectively: 1 is the wet hydrogen conveying pipe of electrolysis, 2 is the hydrogen scrubbing tower, 3 is hydrogen washing liquid cooler, 4 is the heat exchanger before the machine, 5 is the hydrogen compressor, 6 is the heat exchanger behind the machine, 7 is the hydrogen defroster, 8 is the heat exchanger, 9 is first pipeline, 10 is the hydrogen synthetic pipeline of dehydrochlorination, 11 is the second pipeline, 12 is the third pipeline, 13 is the valve.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described with reference to the following examples and figures:
embodiment 1, as shown in fig. 2, the heat exchange device for producing hydrogen by using caustic soda with an ion membrane method comprises an electrolytic wet hydrogen feeding pipe 1, a hydrogen washing tower 2, a hydrogen washing liquid cooler 3, a front heat exchanger 4, a hydrogen compressor 5, a rear heat exchanger 6 and a hydrogen demister 7, wherein a hydrogen outlet of the hydrogen washing tower 2, an air inlet of the front heat exchanger 4, an air outlet of the front heat exchanger 4, an air inlet of the hydrogen compressor 5, an air outlet of the hydrogen compressor 5, an air inlet of the rear heat exchanger 6, an air outlet of the rear heat exchanger 6 and an air inlet of the hydrogen demister 7 are sequentially communicated, a washing liquid inlet and a washing liquid outlet of the hydrogen washing tower 2 are respectively communicated with a washing liquid outlet and a washing liquid inlet of the hydrogen washing liquid cooler 3, and is characterized by further comprising a heat exchanger 8, wherein a refrigerant channel and a heat medium channel which are mutually isolated are arranged in the heat, the gas outlet of the hydrogen demister 7 is communicated with the refrigerant inlet of the heat exchanger 8 through a first pipeline 9, the refrigerant outlet of the heat exchanger 8 is communicated with a hydrogen dehydrochlorination synthesis pipeline 10, a second pipeline 11 is communicated between the electrolytic wet hydrogen feeding pipe 1 and the heat medium inlet of the heat exchanger 8, and a third pipeline 12 is communicated between the electrolytic wet hydrogen feeding pipe 1 between the second pipeline 11 and the hydrogen washing tower 2 and the heat medium outlet of the heat exchanger 8. The invention adds a heat exchange link on the basis of the existing hydrogen treatment process for producing hydrogen by using caustic soda by an ion membrane method, and makes high-temperature wet hydrogen (60-80 ℃) which is not treated by the hydrogen treatment process exchange heat with low-temperature hydrogen (the temperature is about 13 ℃) which is treated by the hydrogen treatment process by adding the heat exchanger 8, so that the temperature of the low-temperature hydrogen treated by the hydrogen treatment process is increased, and the temperature of the high-temperature wet hydrogen which is not treated by the hydrogen treatment process is reduced, on one hand, the over-low temperature of the hydrogen which is sent from the hydrogen treatment process to the hydrogen chloride synthesis process in cold seasons is avoided, the problems of pipeline blockage, valve non-action and flowmeter fluctuation caused by the fact that water vapor contained in the low-temperature hydrogen sent from the hydrogen treatment process is easy to condense and freeze are solved, on the other hand, energy recycling is realized, after the high-temperature wet hydrogen with the reduced temperature enters the hydrogen treatment process, the loads of the hydrogen washing liquid cooler 3, the front heat exchanger 4 and the rear heat exchanger 6 in the hydrogen treatment process can be reduced, and the energy consumption is saved.
Example 2, as shown in fig. 2, as an optimization of example 1, a valve 13 is connected in series to the electrolytic wet hydrogen feeding pipe 1 between the second pipeline 11 and the third pipeline 12. The valve 13 is arranged, and the appropriate operation mode can be selected according to different working conditions.
Example 3, as shown in fig. 2, the method for producing hydrogen gas and heat exchange by ion-membrane process using the apparatus for producing hydrogen gas and heat exchange by ion-membrane process using caustic soda as described in example 2 has two operation modes, one: the valve 13 is opened, a part of the electrolyzed wet hydrogen is sent into the hydrogen washing tower 2 from the electrolyzed wet hydrogen feeding pipe 1, and is sent into the refrigerant channel of the heat exchanger 8 from the first pipeline 9 after sequentially passing through the cooling and washing of the hydrogen washing tower 2, the cooling of the heat exchanger 4 in front of the machine, the compression of the hydrogen compressor 6, the cooling of the heat exchanger 6 behind the machine and the demisting of the hydrogen demister 7, the other part of the electrolyzed wet hydrogen is sent into the heat medium channel of the heat exchanger 8 from the electrolyzed wet hydrogen feeding pipe 1 and the second pipeline 11, after the heat exchange is carried out between the low-temperature hydrogen in the refrigerant channel and the high-temperature hydrogen in the heat medium channel in the heat exchanger 8, the temperature of the hydrogen in the cooling medium channel rises and is sent to the next unit through a hydrogen dehydrochlorination synthesis pipeline 10, the temperature of the hydrogen in the heating medium channel is reduced and is mixed with the hydrogen in the electrolytic wet hydrogen feeding pipe 1 through a third pipeline 12 and then is sent to the hydrogen washing tower 2; and a second mode: the valve 13 is closed, the electrolytic wet hydrogen is firstly sent into a heat medium channel of the heat exchanger 8 through the electrolytic wet hydrogen feeding pipe 1 and the second pipeline 11, then sent into the hydrogen washing tower 2 through the third pipeline 12 and the electrolytic wet hydrogen feeding pipe 1, and sequentially sent into a refrigerant channel of the heat exchanger 8 through the cooling washing of the hydrogen washing tower 2, the cooling of the heat exchanger 4 before the machine, the compression of the hydrogen compressor 5, the cooling of the heat exchanger 6 after the machine and the demisting of the hydrogen demister 7, and then sent into the heat exchanger 8 through the first pipeline 9, at this time, after the heat exchange is carried out between the low-temperature hydrogen in the refrigerant channel and the high-temperature hydrogen in the heat medium channel in the heat exchanger 8, the temperature of the hydrogen in the refrigerant channel is raised and sent to the next unit through the hydrogen dechlorination synthesis pipeline 10, and the temperature of the hydrogen in the heat medium channel is reduced and sent into the hydrogen washing tower 2 through the third pipeline 12. On one hand, the invention avoids the problems that the temperature of the hydrogen sent from the hydrogen treatment process to the hydrogen chloride synthesis process is too low in cold seasons, and the low-temperature hydrogen sent from the hydrogen treatment process is increased, and the contained water vapor is easy to condense and freeze, so that the pipeline is blocked, the valve does not act, and the flow is unstable, so that the flow meter fluctuates, on the other hand, the energy recovery and utilization are realized, and the high-temperature wet hydrogen with the reduced temperature can reduce the loads of a hydrogen washing liquid cooler, a front heat exchanger and a rear heat exchanger in the hydrogen treatment process after entering the hydrogen treatment process, thereby saving the energy consumption. The electrolytic wet hydrogen in the invention is sent into a hydrogen washing tower 2 from an electrolytic wet hydrogen feeding pipe 1 and sequentially passes through the operations of cooling and washing of the hydrogen washing tower 2, cooling of a heat exchanger 4 in front of the machine, compression of a hydrogen compressor 6, cooling of a heat exchanger 6 behind the machine, demisting of a hydrogen demister 7 and the like, which are all conventional technologies.
The technical characteristics form an embodiment of the invention, which has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (1)
1. A heat exchange method for producing hydrogen by using caustic soda through an ion membrane method is characterized by comprising two operation modes, wherein the first mode comprises the following steps: the valve is opened, a part of the electrolyzed wet hydrogen is sent into the hydrogen washing tower through the electrolyzed wet hydrogen feeding pipe, and is sent into a refrigerant channel of the heat exchanger through a first pipeline after sequentially passing through the cooling washing of the hydrogen washing tower, the cooling of a heat exchanger in front of the machine, the compression of a hydrogen compressor, the cooling of a heat exchanger in back of the machine and the demisting of a hydrogen demister, the other part of the electrolyzed wet hydrogen is sent into a heat medium channel of the heat exchanger through the electrolyzed wet hydrogen feeding pipe and a second pipeline, after the heat exchange is carried out between the low-temperature hydrogen in the refrigerant channel and the high-temperature hydrogen in the heat medium channel in the heat exchanger, the temperature of the hydrogen in the refrigerant channel is raised and is sent to the next unit through a hydrogen dehydrochlorination synthesis pipeline, and the temperature of the hydrogen in the heat medium channel is reduced and is mixed with the hydrogen in the electrolyzed wet hydrogen feeding pipe through a third pipeline; and a second mode: the valve is closed, the electrolytic wet hydrogen is firstly sent into a heat medium channel of the heat exchanger through an electrolytic wet hydrogen feeding pipe and a second pipeline, then sent into a hydrogen washing tower through a third pipeline and an electrolytic wet hydrogen feeding pipe, and sent into a refrigerant channel of the heat exchanger through a first pipeline after sequentially cooling and washing of the hydrogen washing tower, cooling of the heat exchanger before the machine, compression of a hydrogen compressor, cooling of the heat exchanger after the machine and demisting of a hydrogen demister, at the moment, after heat exchange is carried out between low-temperature hydrogen in the refrigerant channel and high-temperature hydrogen in the heat medium channel in the heat exchanger, the temperature of the hydrogen in the refrigerant channel is increased, and the hydrogen is sent to the next unit through a hydrogen dehydrochlorination synthesis pipeline, and the temperature of the hydrogen in the heat medium channel is reduced and sent into the hydrogen washing tower through the third pipeline and the electrolytic wet hydrogen feeding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611264532.1A CN106757133B (en) | 2016-12-30 | 2016-12-30 | Heat exchange device and method for producing hydrogen by using ion membrane method caustic soda |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611264532.1A CN106757133B (en) | 2016-12-30 | 2016-12-30 | Heat exchange device and method for producing hydrogen by using ion membrane method caustic soda |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106757133A CN106757133A (en) | 2017-05-31 |
| CN106757133B true CN106757133B (en) | 2020-02-21 |
Family
ID=58951636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611264532.1A Active CN106757133B (en) | 2016-12-30 | 2016-12-30 | Heat exchange device and method for producing hydrogen by using ion membrane method caustic soda |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106757133B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114574875B (en) * | 2022-03-02 | 2023-09-05 | 上海核工程研究设计院股份有限公司 | Comprehensive utilization system for electrolytic hydrogen production of nuclear power plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371531Y (en) * | 1999-04-06 | 2000-03-29 | 王金常 | Spiral-plate heat exchanger |
| CN102424980A (en) * | 2011-11-29 | 2012-04-25 | 泸州北方化学工业有限公司 | Electrolysis system with ion membrane electrolyzer and pressure regulating method thereof |
| CN204757754U (en) * | 2015-06-30 | 2015-11-11 | 北京东方星火能源科技有限公司 | Heat exchanger |
| CN105202960A (en) * | 2015-10-10 | 2015-12-30 | 安陆火凤凰铝材有限责任公司 | Aluminum tube type heat exchanger |
-
2016
- 2016-12-30 CN CN201611264532.1A patent/CN106757133B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371531Y (en) * | 1999-04-06 | 2000-03-29 | 王金常 | Spiral-plate heat exchanger |
| CN102424980A (en) * | 2011-11-29 | 2012-04-25 | 泸州北方化学工业有限公司 | Electrolysis system with ion membrane electrolyzer and pressure regulating method thereof |
| CN204757754U (en) * | 2015-06-30 | 2015-11-11 | 北京东方星火能源科技有限公司 | Heat exchanger |
| CN105202960A (en) * | 2015-10-10 | 2015-12-30 | 安陆火凤凰铝材有限责任公司 | Aluminum tube type heat exchanger |
Non-Patent Citations (2)
| Title |
|---|
| 改造氢气处理工艺提高氢量;周卫生等;《氯碱工业》;20040130(第1期);第24页1.2.4 * |
| 氢气处理工艺的改进;兰赤寿等;《氯碱工业》;20040331(第3期);第20页图2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106757133A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103372357A (en) | Method and device for processing oxidized tail gas of anthraquinone process-based hydrogen peroxide production | |
| CN201935350U (en) | Recycling device of air conditioner condensation water | |
| CN106757133B (en) | Heat exchange device and method for producing hydrogen by using ion membrane method caustic soda | |
| CN102531007A (en) | Whole plant live steam condensed water heat energy recycling device of aluminum oxide production | |
| CN211716919U (en) | Hydrothermal geothermal resource development and utilization system | |
| CN102777351A (en) | Waste heat recycling device and recycling method of oil-free compressor | |
| CN102557090A (en) | Method for recycling heat energy of new steam condensed water in whole plant during alumina production | |
| CN104528877A (en) | Water cooling circulation system | |
| CN104100314B (en) | A kind of condensed steam type small steam turbine exhaust steam bootstrap system driving induced draught fan | |
| CN208933491U (en) | A kind of Novel electrolytic saline solution hypochlorite generator | |
| CN209214139U (en) | A kind of refrigeration system liquid refrigerant heat recovery energy-saving device | |
| CN208349878U (en) | A kind of hydrogen_cooling device in chlorine industry chlorine hydrogen treatment process | |
| CN202880913U (en) | Steam condensate recovery device for concentrating procedure of chlor-alkali workshop | |
| CN104930909A (en) | Cooling water circulating system | |
| CN205676151U (en) | The feedwater of zinc roasting relieving haperacidity, circulation | |
| CN219023302U (en) | Equal gradient cooling crystallization system | |
| CN106367778B (en) | A kind of device and method recycling heat in high temperature moist chlorine | |
| CN220376800U (en) | Caustic soda waste heat recovery device | |
| CN204417177U (en) | Water-cooling circulating system | |
| CN221006025U (en) | Waste heat utilization device of chlor-alkali production system | |
| CN217383362U (en) | Waste heat recycling device in coal hydrogen production process | |
| CN220643283U (en) | Waste heat recycling of electrolytic hydrogen production system is used for raw water heating system | |
| CN114838525B (en) | Method and system for heat extraction and recycling based on coal mine gas extraction equipment | |
| CN219511310U (en) | Steam recycling system | |
| CN219956235U (en) | Waste heat recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |