CN111285373A - Efficient and energy-saving dry ice production equipment and production method - Google Patents
Efficient and energy-saving dry ice production equipment and production method Download PDFInfo
- Publication number
- CN111285373A CN111285373A CN202010148751.3A CN202010148751A CN111285373A CN 111285373 A CN111285373 A CN 111285373A CN 202010148751 A CN202010148751 A CN 202010148751A CN 111285373 A CN111285373 A CN 111285373A
- Authority
- CN
- China
- Prior art keywords
- dry ice
- carbon dioxide
- liquid carbon
- pipeline
- heat exchanger
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/50—Carbon dioxide
- C01B32/55—Solidifying
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses efficient and energy-saving dry ice production equipment and a production method, wherein the method comprises the following steps of 1, enabling liquid carbon dioxide to enter a reaction tower through a liquid carbon dioxide inlet flange on the upper part of a first pipeline of a finned heat exchanger, exchanging heat with low-temperature gas carbon dioxide in the finned heat exchanger, and discharging generated tail gas to the outside through an exhaust flange at an outlet of a second pipeline of the finned heat exchanger; step 2, decompressing the liquid carbon dioxide after heat exchange to normal pressure, and entering the dry ice storage tower through a liquid carbon dioxide outlet flange at the lower part of the first pipeline, a branch pipe and an electromagnetic valve to be changed into dry ice powder; and 3, allowing the dry ice powder to fall to an outlet through gravity and then enter a dry ice compressor to be compressed into blocks. Therefore, the exchange efficiency of cold energy can be greatly improved, the conversion rate of the dry ice is improved, and the tail gas can be scientifically controlled and well discharged.
Description
Technical Field
The invention belongs to the field of dry ice manufacturing.
Background
Present dry ice production facility is compressed the blocking for liquid carbon dioxide gets into after the pipeline passes through the solenoid valve decompression from the storage tank behind the dry ice compression mould, the switch of solenoid valve sets up according to the compression time of mould, time length and the time length of closing of controlling the solenoid valve through PLC, a large amount of gaseous carbon dioxide can not thoroughly separate with the dry ice and exist in the mould like this, cause the random emission of gaseous carbon dioxide in scene, and cause a large amount of cold volume extravagant, thereby the conversion rate of dry ice is crossed lowly when leading to liquid carbon dioxide decompression to ordinary pressure.
Disclosure of Invention
The efficient and energy-saving dry ice production equipment and the production method can greatly improve the exchange efficiency of cold energy, improve the conversion rate of dry ice, and scientifically control the tail gas to be discharged.
This patent scheme provides energy-efficient dry ice production facility, includes: the device comprises a reaction tower, a dry ice storage tower and a dry ice compressor, wherein a fin type heat exchanger is arranged in the reaction tower, the upper part of a first pipeline of the fin type heat exchanger is connected with a liquid carbon dioxide inlet flange, the lower part of the first pipeline is connected with a liquid carbon dioxide outlet flange, the liquid carbon dioxide outlet flange is connected with the dry ice storage tower through a branch pipe and an electromagnetic valve, and the lower part of the dry ice storage tower is connected with the dry ice compressor; the inlet of a second pipeline of the finned heat exchanger is connected with the cavity of the reaction tower, and the outlet of the second pipeline is connected with an exhaust flange;
liquid carbon dioxide enters the finned heat exchanger from the reaction tower through the liquid carbon dioxide inlet flange and exchanges heat with low-temperature gas carbon dioxide and is cooled, the liquid carbon dioxide is decompressed to normal pressure through the branch pipe and the electromagnetic valve and then enters the dry ice storage tower to be changed into dry ice powder, and the dry ice powder falls to the outlet through gravity and then enters the dry ice compressor to be compressed into blocks.
Further, the reaction tower also comprises an injection plate which is used for decompressing the liquid carbon dioxide and then feeding the decompressed liquid carbon dioxide into the dry ice storage tower, and the low-temperature gas carbon dioxide is discharged into the outside through the exhaust flange and can be recycled.
Further, the reaction tower, the dry ice storage tower and the dry ice compressor are sequentially installed from top to bottom; and a safety valve is arranged at the outlet of the exhaust flange and used for controlling uniform exhaust.
Further, a photoelectric sensor is installed on the electromagnetic valve to control the flow of carbon dioxide passing through the electromagnetic valve. Avoid the pressure of the carbon dioxide to be too big or too small, and lead the carbon dioxide to flow through the pipeline uniformly.
Furthermore, an inductor and a weighing device are arranged below a discharge hole of the dry ice storage tower, and dry ice with set weight is controlled to enter the dry ice compressor in a segmented mode to be compressed into blocks, so that the phenomenon that dry ice powder is accumulated in a disordered mode, an inlet of the dry ice compressor is blocked, and the dry ice blocks cannot be processed as required is avoided.
The invention also provides a dry ice production method, which adopts the high-efficiency energy-saving dry ice production equipment and comprises the step 1 that liquid carbon dioxide enters from a reaction tower through a liquid carbon dioxide inlet flange on the upper part of the first pipeline of the finned heat exchanger, heat exchange is carried out between the liquid carbon dioxide and low-temperature gas carbon dioxide in the finned heat exchanger, the pressure in the reaction tower is 0Mpa, the liquid carbon dioxide in front of the inlet flange is 1.9Mpa, more than 50% of the liquid carbon dioxide is changed into the low-temperature gas carbon dioxide with the temperature of-78.5 ℃ after pressure reduction, and in addition, 40% of the liquid carbon dioxide. Simultaneously, discharging the generated tail gas to the outside through an exhaust flange at the outlet of a second pipeline of the finned heat exchanger, wherein the temperature of the liquid carbon dioxide is between-22 and-25 ℃;
step 2, decompressing the liquid carbon dioxide after heat exchange to normal pressure, and entering the dry ice storage tower through a liquid carbon dioxide outlet flange at the lower part of the first pipeline, a branch pipe and an electromagnetic valve to be changed into dry ice powder;
and 3, allowing the dry ice powder to fall to an outlet through gravity and then enter a dry ice compressor to be compressed into blocks.
Further, in the step 2, a photoelectric sensor is installed on the electromagnetic valve connected with the branch pipe, and the flow of carbon dioxide is controlled through the electromagnetic valve.
Further, in the step 3, an inductor and a weighing device are arranged below a discharge hole of the dry ice storage tower, and dry ice powder with set weight is controlled to enter a dry ice compressor in a segmented mode to be compressed into blocks.
The equipment and the production method of the invention bring the following advantages:
1. the dry ice conversion rate is high. Hundreds of tests show that the aluminum finned heat exchanger can provide the best heat exchange effect, the exchange efficiency is improved by 1.8 times compared with the common equipment in the field, and the dry ice conversion rate is improved by 1.3 times. In addition, the liquid carbon dioxide and the gas carbon dioxide with the temperature of minus 78.5 ℃ exchange cold energy rapidly in the aluminum finned heat exchanger, and are not mixed and separated thoroughly.
2. And tail gas generated in the production process is discharged to the outside through an exhaust flange at the outlet of the second pipeline of the finned heat exchanger, and the tail gas is discharged in an organized manner and can be used for recycling the dry ice tail gas, so that the recycling dry ice yield is high.
3. A large amount of gaseous carbon dioxide can be thoroughly separated from the dry ice, so that the environment pollution caused by a large amount of on-site aerial fog is avoided. The photoelectric inductor is adopted to control the flow of the carbon dioxide passing through the electromagnetic valve, so that the pressure of the carbon dioxide is prevented from being too large or too small, and the carbon dioxide uniformly flows through the pipeline. An inductor and a weighing device are arranged below a discharge hole of the dry ice storage tower, dry ice with set weight is controlled to enter a dry ice compressor mold in a segmented mode to be compressed into blocks, and therefore the phenomenon that dry ice powder is accumulated in a disordered mode to block an inlet of the dry ice compressor can be avoided, and dry ice blocks cannot be processed as required.
Drawings
Figure 1 is a schematic diagram of the structure of the efficient and energy-saving dry ice production equipment of the patent.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present patent will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, this patent embodiment provides a high-efficient energy-saving dry ice production apparatus, including: the device comprises a reaction tower 1, a dry ice storage tower 2 and a dry ice compressor 3, wherein a fin type heat exchanger 4 is arranged in the reaction tower, the upper part of a first pipeline of the fin type heat exchanger is connected with a liquid carbon dioxide inlet flange 5, the lower part of the first pipeline is connected with a liquid carbon dioxide outlet flange 6, the liquid carbon dioxide outlet flange 6 is connected with the dry ice storage tower 2 through a branch pipe and an electromagnetic valve 7, and the lower part of the dry ice storage tower is connected with the dry ice compressor 3; and the inlet of a second pipeline of the finned heat exchanger 4 is connected with the cavity of the reaction tower 1, and the outlet of the second pipeline is connected with an exhaust flange 8. The reaction tower 1, the dry ice storage tower 2 and the dry ice compressor 3 are sequentially installed from top to bottom; and a safety valve is arranged at the outlet of the exhaust flange 8 and used for controlling uniform exhaust to be recycled.
The reaction tower also comprises an injection plate 9 which is used for decompressing the liquid carbon dioxide and then feeding the decompressed liquid carbon dioxide into the dry ice storage tower, and discharging the low-temperature gas carbon dioxide into the outside through the exhaust flange after heat exchange.
And a photoelectric sensor 10 is arranged on the electromagnetic valve 7 and used for controlling the flow of the carbon dioxide passing through the electromagnetic valve. Avoid the pressure of the carbon dioxide to be too big or too small, and lead the carbon dioxide to flow through the pipeline uniformly.
An inductor and a weighing device are arranged below a discharge hole of the dry ice storage tower, dry ice with set weight is controlled to enter the dry ice compressor 3 in a segmented mode to be compressed into blocks, and therefore the phenomenon that dry ice powder is accumulated in a disordered mode, blocks an inlet of the dry ice compressor and cannot be processed into dry ice blocks according to requirements can be avoided.
The invention also provides a dry ice production method, which adopts the efficient energy-saving dry ice production equipment and comprises the following steps of 1, enabling liquid carbon dioxide to enter from a reaction tower through a liquid carbon dioxide inlet flange at the upper part of a first pipeline of the finned heat exchanger, exchanging heat with low-temperature gas carbon dioxide in the finned heat exchanger, and discharging generated tail gas to the outside through an exhaust flange at an outlet of a second pipeline of the finned heat exchanger, wherein the temperature of the liquid carbon dioxide is-22 ℃ to-25 ℃, and the temperature of the low-temperature gas carbon dioxide is-78.5 ℃;
step 2, decompressing the liquid carbon dioxide after heat exchange to normal pressure, and entering the dry ice storage tower through a liquid carbon dioxide outlet flange at the lower part of the first pipeline, a branch pipe and an electromagnetic valve to be changed into dry ice powder; and the electromagnetic valve 7 connected with the branch pipe is provided with a photoelectric sensor, and the flow of carbon dioxide is controlled by the electromagnetic valve.
And 3, allowing the dry ice powder to fall to an outlet through gravity and then enter a dry ice compressor to be compressed into blocks. An inductor and a weighing device are arranged below a discharge hole of the dry ice storage tower, and dry ice powder with set weight is controlled to enter the dry ice compressor 3 in a segmented mode to be compressed into blocks. Therefore, the problem that the dry ice powder is accumulated disorderly to block the inlet of the dry ice compressor can be avoided.
Hundreds of production tests prove that the cold energy of the liquid carbon dioxide and the gas carbon dioxide with the temperature of-78.5 ℃ is rapidly exchanged in the aluminum finned heat exchanger, the exchange efficiency is improved by 1.8 times compared with the common equipment in the field, and the conversion rate of dry ice is improved by 1.3 times. In addition, the liquid carbon dioxide and the gas carbon dioxide with the temperature of minus 78.5 ℃ exchange cold energy rapidly in the aluminum finned heat exchanger, and are not mixed and separated thoroughly. And tail gas generated in the production process is discharged to the outside through an exhaust flange at the outlet of the second pipeline of the finned heat exchanger, and the tail gas is discharged in an organized manner and can be used for recycling the dry ice tail gas, so that the recycling dry ice yield is high.
The embodiments described above are presented to enable those skilled in the art to make and use the invention. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. Efficient and energy-saving dry ice production equipment is characterized by comprising: the device comprises a reaction tower (1), a dry ice storage tower (2) and a dry ice compressor (3), wherein a finned heat exchanger (4) is arranged in the reaction tower, the upper part of a first pipeline of the finned heat exchanger is connected with a liquid carbon dioxide inlet flange (5), the lower part of the first pipeline is connected with a liquid carbon dioxide outlet flange (6), the liquid carbon dioxide outlet flange (6) is connected with the dry ice storage tower (2) through a branch pipe and an electromagnetic valve (7), and the lower part of the dry ice storage tower is connected with the dry ice compressor (3); a second pipeline inlet of the finned heat exchanger (4) is connected with a cavity of the reaction tower (1), and a second pipeline outlet is connected with an exhaust flange (8);
liquid carbon dioxide enters the finned heat exchanger from the reaction tower (1) through the liquid carbon dioxide inlet flange (5) to exchange heat with low-temperature gas carbon dioxide and then is cooled, is decompressed to normal pressure through the branch pipe and the electromagnetic valve (7), enters the dry ice storage tower (2) to become dry ice powder, and the dry ice powder falls down to the outlet through gravity and then enters the dry ice compressor (3) to be compressed into blocks.
2. The efficient and energy-saving dry ice production equipment as claimed in claim 1, wherein the reaction tower further comprises an injection plate (9) for decompressing the liquid carbon dioxide and then feeding the decompressed liquid carbon dioxide into the dry ice storage tower, and the low-temperature gas carbon dioxide is discharged into the outside through an exhaust flange (8) after heat exchange.
3. An efficient and energy-saving dry ice production device as claimed in claim 1, wherein the reaction tower, the dry ice storage tower and the dry ice compressor are sequentially installed from top to bottom; and a safety valve is arranged at the outlet of the exhaust flange and used for controlling uniform exhaust.
4. Energy efficient dry ice production equipment according to claim 1, characterized in that a photoelectric sensor (10) is mounted on the solenoid valve (7) to control the flow of carbon dioxide through the solenoid valve.
5. An efficient and energy-saving dry ice production device as claimed in claim 1, wherein an inductor and a weighing device are arranged below the discharge port of the dry ice storage tower, and dry ice with set weight is controlled to enter a dry ice compressor in a segmented mode to be compressed into blocks.
6. A dry ice production method is characterized in that the efficient and energy-saving dry ice production equipment as claimed in claim 1 is adopted, and the method comprises the following steps 1, liquid carbon dioxide enters from a reaction tower through a liquid carbon dioxide inlet flange at the upper part of a first pipeline of a finned heat exchanger, heat exchange is carried out between the liquid carbon dioxide and low-temperature gas carbon dioxide in the finned heat exchanger, meanwhile, generated tail gas is discharged to the outside through an exhaust flange at an outlet of a second pipeline of the finned heat exchanger, and the temperature of the liquid carbon dioxide is-22 ℃ to-25 ℃;
step 2, decompressing the liquid carbon dioxide after heat exchange to normal pressure, and entering the dry ice storage tower through a liquid carbon dioxide outlet flange at the lower part of the first pipeline, a branch pipe and an electromagnetic valve to be changed into dry ice powder;
and 3, allowing the dry ice powder to fall to an outlet through gravity and then enter a dry ice compressor to be compressed into blocks.
7. A method for producing dry ice according to claim 6, wherein in step 2, a photoelectric sensor is mounted on the solenoid valve connected to the branch pipe, and the flow of carbon dioxide is controlled by the solenoid valve.
8. A dry ice production method as claimed in claim 6, wherein in step 3, an inductor and a weighing device are arranged below a discharge port of the dry ice storage tower, and dry ice powder with set weight is controlled to enter a dry ice compressor in a segmented mode to be compressed into blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010148751.3A CN111285373A (en) | 2020-03-05 | 2020-03-05 | Efficient and energy-saving dry ice production equipment and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010148751.3A CN111285373A (en) | 2020-03-05 | 2020-03-05 | Efficient and energy-saving dry ice production equipment and production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111285373A true CN111285373A (en) | 2020-06-16 |
Family
ID=71019723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010148751.3A Pending CN111285373A (en) | 2020-03-05 | 2020-03-05 | Efficient and energy-saving dry ice production equipment and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111285373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151461A1 (en) * | 2022-02-10 | 2023-08-17 | 厦门金瑞镒工贸有限公司 | Dry ice making device, and exhaust structure and exhaust method of dry ice making device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204718452U (en) * | 2015-04-13 | 2015-10-21 | 天津联博化工股份有限公司 | A kind of new and effective heat exchange ice chest being applied to dry ice production |
| CN208751348U (en) * | 2018-07-25 | 2019-04-16 | 广州市华达石化有限公司 | Cold recovery equipment in a kind of dry ice production process |
-
2020
- 2020-03-05 CN CN202010148751.3A patent/CN111285373A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204718452U (en) * | 2015-04-13 | 2015-10-21 | 天津联博化工股份有限公司 | A kind of new and effective heat exchange ice chest being applied to dry ice production |
| CN208751348U (en) * | 2018-07-25 | 2019-04-16 | 广州市华达石化有限公司 | Cold recovery equipment in a kind of dry ice production process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023151461A1 (en) * | 2022-02-10 | 2023-08-17 | 厦门金瑞镒工贸有限公司 | Dry ice making device, and exhaust structure and exhaust method of dry ice making device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111285373A (en) | Efficient and energy-saving dry ice production equipment and production method | |
| CN105157134A (en) | Energy-saving chilled water storage structure | |
| CN205779572U (en) | Air compressor machine oil circuit circulating device | |
| CN113372309A (en) | Production process for continuously feeding and discharging materials into hydrolysis kettle in gas-phase furfural production | |
| CN203478771U (en) | Cold water recycling pipeline device of slice ice machine | |
| CN111014702B (en) | Energy-saving system for gas atomization powder making equipment | |
| CN210089421U (en) | Steel smelting waste residue waste heat collection device | |
| CN206580564U (en) | Pump pressure type dry-ice machine | |
| CN218296342U (en) | System for liquid nitrogen refrigeration high-efficient production dry ice | |
| CN215919011U (en) | Vertical cooling bed for casting molding sand | |
| CN215719359U (en) | Device for indirectly cooling chlorine gas of chlorine gas compressor by using refrigerant | |
| CN217481559U (en) | Synthetic ammonia feed gas compression system | |
| CN204490742U (en) | A kind of cement cooling device | |
| CN112824819A (en) | Cooling system and method for cement clinker | |
| CN205746773U (en) | Vacuum boiler steam-purity value automaton | |
| CN111043870A (en) | System and method for recycling heat of polycrystalline silicon reduction furnace | |
| CN215113526U (en) | Dirty nitrogen cooling capacity utilization device in air separation device | |
| CN210039870U (en) | Water cooler for transformer with automatic exhaust function | |
| CN209865700U (en) | High-efficient negative pressure device of taking out of synthetic furnace | |
| CN211370686U (en) | Hydrogen compression supercharging device | |
| CN202281455U (en) | Collecting system for carbon dioxide | |
| CN214223566U (en) | Silica gel particle ultralow-water-content high-temperature heat pump drying system | |
| CN2582853Y (en) | Polyethylene film blow moulding machine having forced circulation internal cooling device | |
| CN219433915U (en) | Back-flushing device of main heat exchanger in air separation system | |
| CN109395424B (en) | Povidone drying system and drying method |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.1, Aotou Youcheng West Road, Dayawan, Huizhou, Guangdong 516000 Applicant after: Huizhou huadatong Gas Manufacturing Co., Ltd Address before: 510726 room 1715, building 1, poly Zhongyu Plaza, 319 Dashadi East, Huangpu District, Guangzhou City, Guangdong Province Applicant before: HUIZHOU HUADATONG PETROCHEMICAL Co.,Ltd. |