CN114531745A - Fluoride purification system, explosion-proof heater in fluoride purification system and use method - Google Patents
Fluoride purification system, explosion-proof heater in fluoride purification system and use method Download PDFInfo
- Publication number
- CN114531745A CN114531745A CN202210061075.5A CN202210061075A CN114531745A CN 114531745 A CN114531745 A CN 114531745A CN 202210061075 A CN202210061075 A CN 202210061075A CN 114531745 A CN114531745 A CN 114531745A
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof
- heater
- heating
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0247—For chemical processes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/26—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/037—Heaters with zones of different power density
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention provides an explosion-proof heater in a fluoride purification system, which comprises a heating container and a heat-insulating sleeve; the outer side of the heating container is sleeved with a heat-insulating sleeve; the heating container comprises an upper section, a middle section and a lower section which are arranged along the length direction of the heating container; heating detection components are arranged at the positions, close to the middle, of the upper section, the middle section and the lower section; the heating detection assembly comprises a heating pipe and an explosion-proof sensor which are matched with each other; the invention also provides a use method of the fluoride purification system; the heater is detachable, so that later-period disassembly and maintenance are facilitated, the adsorbent is filled in the inner container, and fluoride gas also circulates in the inner container and is not in contact with the heater. The isolation of poisonous and harmful gas is guaranteed, the possibility of leakage is reduced, the temperature of the heating container is controlled by the upper, middle and lower sections independently, the temperature accuracy is guaranteed, the AB group explosion-proof heater group is used in an exchange mode, and the working efficiency is improved.
Description
Technical Field
The invention relates to a fluoride purification device, in particular to a fluoride purification system, an explosion-proof heater in the fluoride purification system and a using method.
Background
The electric heater is a kind of international popular electric heating equipment, used for heating up, keeping warm, heating to flowing liquid and gaseous media, when the heating medium passes through the electric heater heating cavity under the action of pressure, the huge heat produced in the working of the electric heating element is uniformly taken away by adopting the fluid thermodynamic principle, so that the temperature of the heated medium reaches the user technological requirements.
The existing fluoride purification system does not have an adsorbent to adsorb impurities in fluoride gas for purification, and the produced fluoride contains trace impurities.
Accordingly, there is a need for improvements in the art.
Disclosure of Invention
The invention aims to provide a fluoride purification system, an explosion-proof heater in the fluoride purification system and a use method with high efficiency.
In order to solve the technical problem, the invention provides an explosion-proof heater in a fluoride purification system, which comprises a heating container and a heat-insulating sleeve;
the outer side of the heating container is sleeved with a heat-insulating sleeve;
the heating container comprises an upper section, a middle section and a lower section which are arranged along the length direction of the heating container; heating detection components are arranged at the positions, close to the middle, of the upper section, the middle section and the lower section;
the heating detection assembly comprises a heating pipe and an explosion-proof sensor which are matched with each other;
the heating pipe is positioned in the heat-insulating sleeve, the heating pipe is spirally arranged at the position close to the periphery of the heating container, and an explosion-proof junction box is also arranged on the heating pipe;
the explosion-proof sensor is fixedly arranged on the heat-insulating sleeve through a sensor mounting bracket;
the sensor mounting bracket is a truncated cone-shaped frame, the bottom of the sensor mounting bracket is fixedly connected with the heat-insulating sleeve into a whole, a rotating sleeve is arranged at the top of the sensor mounting bracket, and internal threads are arranged on the inner surface of the rotating sleeve;
a rotating shaft is arranged on the explosion-proof sensor, and external threads are arranged on the outer surface of the rotating shaft;
the rotating sleeve is matched with the rotating shaft, the rotating shaft is in threaded connection with the rotating sleeve, and a detection probe of the explosion-proof sensor penetrates through a temperature measuring hole in the heat-insulating sleeve and then abuts against the outer wall of the heating container;
the explosion-proof sensor is in signal connection with the explosion-proof junction box through a signal tube.
As an improvement to the explosion proof heater in a fluoride purification system of the present invention:
the upper section, the middle section and the lower section of the heating container are detachably connected.
As an improvement to the explosion proof heater in a fluoride purification system of the present invention:
the invention also provides a fluoride purification system, which comprises two groups AB of anti-explosion heater groups, wherein each group of anti-explosion heater group comprises a plurality of anti-explosion heaters which are sequentially connected in series;
the nitrogen channel is respectively communicated with inlets of the AB two groups of anti-explosion heater groups;
the fluoride gas channel is respectively communicated with inlets of the AB two groups of anti-explosion heater groups;
and outlets of the AB two groups of anti-explosion heater groups are respectively connected with subsequent treatment equipment and tail gas treatment equipment.
The invention also provides a use method of the fluoride purification system, which comprises the following steps:
1) the group A explosion-proof heater group is usually used for introducing fluoride gas in a warm way, and the internal adsorbent adsorbs impurities; meanwhile, nitrogen is introduced into the group B of anti-explosion heater groups, the PLC program controls the heating temperature of the anti-explosion heaters in the group B of anti-explosion heater groups, and the anti-explosion heaters are heated in a segmented and timed manner, so that impurities on the adsorbent are desorbed, and the impurities are taken away by the nitrogen and enter tail gas treatment equipment; executing step 2 until one work flow is finished;
2) the group B of anti-explosion heater groups generally ventilate fluoride gas in a warm way, and the internal adsorbent adsorbs impurities; meanwhile, nitrogen is introduced into the group A of anti-explosion heater groups, the PLC program controls the heating temperature of the anti-explosion heaters in the group A of anti-explosion heater groups, and the anti-explosion heaters are heated in a segmented and timed manner, so that impurities on the adsorbent are desorbed, and the impurities are taken away by the nitrogen and enter tail gas treatment equipment; executing step 3 until a work flow is finished;
3) and repeating the step 1-2, and exchanging the AB group explosion-proof heater group for use.
The invention discloses a fluoride purification system, an explosion-proof heater in the fluoride purification system and a using method, which have the technical advantages that:
1. the heater is made to be detachable, and later-stage disassembly and assembly and maintenance are facilitated.
2. The adsorbent is filled in the inner container, and the fluoride gas also flows through the inner container without contacting the heater. The isolation of toxic and harmful gases is ensured, and the leakage possibility is reduced.
3. The heating container adopts the upper section, the middle section and the lower section to independently control the temperature, thereby ensuring the temperature accuracy.
And 4, the AB group explosion-proof heater group is used alternately, so that the working efficiency is increased.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an explosion-proof heater in a fluoride purification system of the present invention;
FIG. 2 is a schematic structural view of the explosion-proof sensor 3 used in cooperation with the heating container 1 in FIG. 1;
FIG. 3 is a schematic diagram of a fluoride purification system.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Example 1 an explosion proof heater in a fluoride purification system, as shown in fig. 1, comprises a heating vessel 1 and a thermal insulating sleeve 2.
The outer surface of the heating container 1 is covered with a heat-insulating sleeve 2.
The heating container 1 is provided with a plurality of heating detection components along the length direction; the heating container 1 is provided with an air inlet 14 and an air outlet 15 at both ends thereof, respectively.
In this embodiment, divide into heating container 1 from the top down equidistance in proper order and divide into upper segment 11, middle section 12 and hypomere 13 three-sections altogether, the position near the centre of every section all is provided with the heating determine module, divide into the three-section and can make things convenient for follow-up segmentation independent control to heating container 1 to guarantee the temperature precision.
The heating detection component comprises a heating pipe 4 and an explosion-proof sensor 3 which are matched with each other;
the heating pipe 4 is positioned in the heat-insulating sleeve 2, the heating pipe 4 is spirally arranged at the position, close to the periphery, of the heating container 1, the heating container 1 is heated by controlling the heating pipe 4, and the heating pipe 4 is also provided with an explosion-proof junction box 41.
The explosion-proof sensor 3 is fixedly arranged on the heat-insulating sleeve 2 through a sensor mounting bracket 31;
the sensor mounting bracket 31 is a truncated cone-shaped frame, the bottom of the sensor mounting bracket 31 is fixedly connected with the heat-insulating sleeve 2 into a whole, the top of the sensor mounting bracket 31 is provided with a rotary sleeve 32, and the inner surface of the rotary sleeve 32 is provided with internal threads;
a rotating shaft 33 is arranged on the explosion-proof sensor 3, and an external thread is arranged on the outer surface of the rotating shaft 33;
the rotating sleeve 32 is matched with the rotating shaft 33, the rotating shaft 33 is in threaded connection with the rotating sleeve 32, and a detection probe 34 of the explosion-proof sensor 3 penetrates through the temperature measuring hole 21 on the heat-insulating sleeve 2 and then is abutted against the outer wall of the heating container 1;
by rotating the explosion-proof sensor 3, the rotation shaft 33 and the rotation sleeve 32 are rotated, so that the length of the detection probe 34 inserted into the temperature measuring hole 21 is adjusted, and whether the detection probe 34 abuts against the outer wall of the heating container 1 is adjusted.
The explosion-proof sensor 3 is in signal connection with the explosion-proof junction box 41 through a signal tube, the explosion-proof sensor 3 detects the temperature in the heating container 1 and then transmits the temperature to the explosion-proof junction box 41, temperature control judgment is carried out according to the temperature in the heating container 1 detected by the explosion-proof sensor 3 and a preset temperature, and the heating of the heating container 1 is carried out by controlling the heating power of the heating tube 4.
When the temperature control device is used, the temperature of the upper section 11, the temperature of the middle section 12 and the temperature of the lower section 13 are controlled to be the same through the heating pipe 4, and the temperature of the three sections are independently controlled, so that the temperature accuracy is guaranteed.
The upper section 11, the middle section 12 and the lower section 13 of the heating container 1 are detachably connected, so that when the heating container needs to be replaced and maintained, the upper section 11, the middle section 12 and the lower section 13 can be sequentially taken out from the inner cavity of the heat-insulating sleeve 2, corresponding parts are replaced and maintained, and the heating container is reassembled.
The fluoride adsorbent is filled in the upper section 11, the middle section 12 and the lower section 13 of the heating container 1, most of toxic and harmful gas in the fluoride gas can be absorbed by the fluoride adsorbent, the fluoride gas is not in contact with the heating pipe 4, the toxic and harmful gas isolation can be ensured, and the leakage possibility is reduced.
A fluoride purification system comprises two groups AB of explosion-proof heater groups, wherein each group of explosion-proof heater group comprises a plurality of explosion-proof heaters which are connected in series in sequence (in the embodiment, the number of the explosion-proof heaters is 3);
the nitrogen channel is respectively communicated with inlets of the AB two groups of anti-explosion heater groups;
the fluoride gas channel is respectively communicated with inlets of the AB two groups of anti-explosion heater groups;
and outlets of the AB two groups of anti-explosion heater groups are respectively connected with subsequent treatment equipment and tail gas treatment equipment.
Valves are arranged on the nitrogen channel and the fluoride gas channel.
A process for using a fluoride purification system, comprising the steps of:
1) when the group A explosion-proof heater group is normally used, fluoride gas is generally introduced in the group A explosion-proof heater group in a warm mode, and the internal adsorbent adsorbs impurities; meanwhile, nitrogen is introduced into the group B of anti-explosion heater groups, the PLC program controls the heating temperature of the anti-explosion heaters in the group B of anti-explosion heater groups, and the anti-explosion heaters are heated in a segmented and timed manner, so that impurities on the adsorbent are desorbed, and the impurities are taken away by the nitrogen and enter tail gas treatment equipment; executing step 2 until one work flow is finished;
2) the valve control gas pipeline and the B group of explosion-proof heater group are used for normally ventilating fluoride gas, and the internal adsorbent adsorbs impurities. Meanwhile, nitrogen is introduced into the group A of anti-explosion heater groups, the PLC program controls the heating temperature of the anti-explosion heaters in the group A of anti-explosion heater groups, and the anti-explosion heaters are heated in a segmented and timed manner, so that impurities on the adsorbent are desorbed, and the impurities are taken away by the nitrogen and enter tail gas treatment equipment; executing step 3 until a work flow is finished;
3) and repeating the steps 1-2, and exchanging and using the AB group explosion-proof heater group to increase the working efficiency.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (5)
1. An explosion proof heater in a fluoride purification system, characterized by: comprises a heating container (1) and a heat-insulating sleeve (2);
the outer side of the heating container (1) is sleeved with a heat-insulating sleeve (2);
the heating container (1) comprises an upper section (11), a middle section (12) and a lower section (13) which are arranged along the length direction of the heating container; heating detection components are arranged at the positions, close to the middle, of the upper section (11), the middle section (12) and the lower section (13);
the heating detection assembly comprises a heating pipe (4) and an explosion-proof sensor (3) which are matched with each other;
the heating pipe (4) is positioned in the heat-insulating sleeve (2), the heating pipe (4) is spirally arranged at the position, close to the periphery, of the heating container (1), and an explosion-proof junction box (41) is further arranged on the heating pipe (4);
the explosion-proof sensor (3) is fixedly arranged on the heat-insulating sleeve (2) through a sensor mounting bracket (31);
the sensor mounting bracket (31) is a truncated cone-shaped frame, the bottom of the sensor mounting bracket (31) is fixedly connected with the heat-insulating sleeve (2) into a whole, a rotary sleeve (32) is arranged at the top of the sensor mounting bracket (31), and internal threads are arranged on the inner surface of the rotary sleeve (32);
a rotating shaft (33) is installed on the explosion-proof sensor (3), and external threads are arranged on the outer surface of the rotating shaft (33);
the rotating sleeve (32) is matched with the rotating shaft (33), the rotating shaft (33) is in threaded connection with the rotating sleeve (32), and a detection probe (34) of the explosion-proof sensor (3) penetrates through a temperature measuring hole (21) in the heat-insulating sleeve (2) and then abuts against the outer wall of the heating container (1);
the explosion-proof sensor (3) is in signal connection with the explosion-proof junction box (41) through a signal tube.
2. The explosion proof heater in a fluoride purification system of claim 1, wherein:
the upper section (11), the middle section (12) and the lower section (13) of the heating container (1) are detachably connected.
3. The explosion proof heater in a fluoride purification system of claim 2, wherein:
the interior of the upper section (11), the middle section (12) and the lower section (13) of the heating container (1) is filled with fluoride adsorbent.
4.A fluoride purification system, comprising: the explosion-proof heater comprises two groups AB of explosion-proof heater groups, wherein each group of explosion-proof heater group comprises a plurality of explosion-proof heaters which are sequentially connected in series;
the nitrogen channel is respectively communicated with inlets of the AB two groups of anti-explosion heater groups;
the fluoride gas channel is respectively communicated with inlets of the AB two groups of anti-explosion heater groups;
and outlets of the AB two groups of anti-explosion heater groups are respectively connected with subsequent treatment equipment and tail gas treatment equipment.
5. A method of using a fluoride purification system, comprising: the method comprises the following steps:
1) the group A explosion-proof heater group is usually used for introducing fluoride gas in a warm way, and the internal adsorbent adsorbs impurities; meanwhile, nitrogen is introduced into the group B of anti-explosion heater groups, the PLC program controls the heating temperature of the anti-explosion heaters in the group B of anti-explosion heater groups, and the anti-explosion heaters are heated in a segmented and timed manner, so that impurities on the adsorbent are desorbed, and the impurities are taken away by the nitrogen and enter tail gas treatment equipment; executing step 2 until one work flow is finished;
2) the group B of anti-explosion heater groups is generally used for introducing fluoride gas in a warm way, and the internal adsorbent adsorbs impurities; meanwhile, nitrogen is introduced into the group A of anti-explosion heater groups, the PLC program controls the heating temperature of the anti-explosion heaters in the group A of anti-explosion heater groups, and the anti-explosion heaters are heated in a segmented and timed manner, so that impurities on the adsorbent are desorbed, and the impurities are taken away by the nitrogen and enter tail gas treatment equipment; executing step 3 until one workflow is finished;
3) and repeating the step 1-2, and exchanging the AB group explosion-proof heater group for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210061075.5A CN114531745A (en) | 2022-01-19 | 2022-01-19 | Fluoride purification system, explosion-proof heater in fluoride purification system and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210061075.5A CN114531745A (en) | 2022-01-19 | 2022-01-19 | Fluoride purification system, explosion-proof heater in fluoride purification system and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114531745A true CN114531745A (en) | 2022-05-24 |
Family
ID=81620789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210061075.5A Pending CN114531745A (en) | 2022-01-19 | 2022-01-19 | Fluoride purification system, explosion-proof heater in fluoride purification system and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114531745A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235116A (en) * | 2022-08-05 | 2022-10-25 | 北京巨恒芯展环保科技有限公司 | Explosion-proof industrial air heating equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017092184A (en) * | 2015-11-06 | 2017-05-25 | Ｊｘエネルギー株式会社 | Ventilator for explosion proof container, explosion proof container, explosion proof gas detection mechanism and monitoring device |
| CN211400328U (en) * | 2019-08-28 | 2020-09-01 | 上海麦越环境技术有限公司 | High-power automatic temperature control gas pipeline heater |
| CN211562396U (en) * | 2019-12-31 | 2020-09-25 | 河北坦航环保科技有限公司 | Oil gas recovery device suitable for double-channel alternate working in low-temperature environment |
| CN212278480U (en) * | 2020-01-16 | 2021-01-01 | 镇江东方电热有限公司 | Coated high-temperature explosion-proof heater |
| CN214075815U (en) * | 2020-12-21 | 2021-08-31 | 福建德尔科技有限公司 | Little oxygen adsorption regenerating unit for waste gas recovery purification electron level hexafluoroethane |
-
2022
- 2022-01-19 CN CN202210061075.5A patent/CN114531745A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017092184A (en) * | 2015-11-06 | 2017-05-25 | Ｊｘエネルギー株式会社 | Ventilator for explosion proof container, explosion proof container, explosion proof gas detection mechanism and monitoring device |
| CN211400328U (en) * | 2019-08-28 | 2020-09-01 | 上海麦越环境技术有限公司 | High-power automatic temperature control gas pipeline heater |
| CN211562396U (en) * | 2019-12-31 | 2020-09-25 | 河北坦航环保科技有限公司 | Oil gas recovery device suitable for double-channel alternate working in low-temperature environment |
| CN212278480U (en) * | 2020-01-16 | 2021-01-01 | 镇江东方电热有限公司 | Coated high-temperature explosion-proof heater |
| CN214075815U (en) * | 2020-12-21 | 2021-08-31 | 福建德尔科技有限公司 | Little oxygen adsorption regenerating unit for waste gas recovery purification electron level hexafluoroethane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235116A (en) * | 2022-08-05 | 2022-10-25 | 北京巨恒芯展环保科技有限公司 | Explosion-proof industrial air heating equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110064302B (en) | Honeycomb denitration catalyst SO 2 Real-time on-line detection method and device for oxidation rate | |
| CN102650623A (en) | Device for detection of low-concentration Freon in seawater and production method thereof | |
| CN114531745A (en) | Fluoride purification system, explosion-proof heater in fluoride purification system and use method | |
| CN101639704A (en) | Air current control system capable of continuously producing temperature, relative humidity, and pressure-controllable air current | |
| CN106369819A (en) | Casing pipe type gas electric heating device | |
| CN201583437U (en) | Test climatic chamber of release amount of volatile organic compound | |
| CN204025774U (en) | Change the outlet valve of integrating water route for gas-heating water heater plate | |
| CN110244008B (en) | Multicomponent competitive adsorption penetration curve analyzer | |
| US8682149B2 (en) | Flow measurement with electric heaters | |
| CN206504968U (en) | VOCs adsorption/desorptions test device and VOCs measuring systems | |
| CN203117138U (en) | Visualized testing system for phase change of refrigerant inside horizontal pipe | |
| CN205199543U (en) | High -efficient electric heating constant temperature water -bath for pharmacy | |
| CN105319306B (en) | A kind of air energy heated type chromatograph box and gas chromatograph | |
| CN216484878U (en) | Hydrogen fluoride gas calibrator in sulfur hexafluoride | |
| CN113465385B (en) | Detachable organic carbon high-temperature closed combustion system and application thereof | |
| CN101333446B (en) | Device for pyrolyzing kerogen in stages for hydrocarbon-generating dynamics research | |
| CN207502338U (en) | A kind of device for fast detecting of activated carbon adsorption rate and desorption rate | |
| CN105891390A (en) | Thermal desorption tube ageing equipment | |
| CN105159344A (en) | Saturated salt type humidity generator capable of adjusting humidity rapidly | |
| CN109239126B (en) | Pipeline type multifunctional gas heat exchanger testing device | |
| CN103558321B (en) | Gas examination sample introduction evaporator with gas feeding adjusting replacing combination valve | |
| CN203036615U (en) | Pipeline type steam generator and control system | |
| CN219391986U (en) | Multi-component process gas dynamic simulation system | |
| CN110332840A (en) | A kind of stage temperature control pass heat exchanger | |
| CN214913504U (en) | Condenser for fractionation |
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 |