CN210993636U - Regeneration energy-saving device for gas phase dryer of MTO device - Google Patents
Regeneration energy-saving device for gas phase dryer of MTO device Download PDFInfo
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- CN210993636U CN210993636U CN201921772137.3U CN201921772137U CN210993636U CN 210993636 U CN210993636 U CN 210993636U CN 201921772137 U CN201921772137 U CN 201921772137U CN 210993636 U CN210993636 U CN 210993636U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
A regeneration energy-saving device of a gas phase dryer of an MTO device comprises the gas phase dryer, a feeding pipeline, a discharging pipeline, a nitrogen supply pipeline and a regeneration gas discharge pipeline, wherein the feeding pipeline, the discharging pipeline, the nitrogen supply pipeline and the regeneration gas discharge pipeline are communicated with the gas phase dryer; install electric heater on nitrogen gas supply pipe, still parallelly connected the heat transfer bypass on the nitrogen gas supply pipe, install heat exchanger and heat transfer control valve on the heat transfer bypass, the cold entry and the cold export of heat exchanger all communicate with the nitrogen gas supply pipe of electric heater inlet side, install first diverter valve on the nitrogen gas supply pipe between the cold entry of heat exchanger and cold export, the hot entry and the hot export of heat exchanger all communicate with regeneration gas discharge pipe, install the second diverter valve on the regeneration gas discharge pipe between the hot entry of heat exchanger and hot export. The device reasonable in design, energy-conserving high-efficient has effectively reduced regeneration nitrogen gas quantity and electric heater's operating power, and the energy consumption descends obviously, and the programming rate is fast for the regeneration export of gas phase drying ware can reach the design temperature.
Description
Technical Field
The utility model relates to a MTO production technical field, especially a MTO device gas phase dryer regeneration economizer.
Background
In the prior art, during the MTO (methanol to olefin) production process, the gas phase dryer is divided into A, B two gas phase dryers, the 3A molecular sieve is filled in the gas phase dryers and used for drying the gas phase product of the MTO device, during normal production, one gas phase dryer is in a moisture adsorption state, the other gas phase dryer is in a regeneration state, after one gas phase dryer adsorbs certain moisture, the other gas phase dryer is switched to operate, and hot nitrogen is used for passing through a dryer bed layer during regeneration of the dryer, so that the moisture is desorbed.
The defects of the prior art are as follows: the temperature is slowly increased, the regeneration time exceeds the design index, the water content at the outlet of the operated gas phase dryer exceeds the standard, the outlet cannot be increased to the design temperature when the dryer is regenerated, the regeneration effect is poor, and the nitrogen and electric energy consumption is large.
Disclosure of Invention
The utility model aims to solve the technical problem that to prior art not enough, provide a reasonable in design, energy-efficient, effectively reduce nitrogen gas quantity and electric heater's operating power's MTO device gas phase drying ware regeneration economizer.
The technical problem to be solved by the utility model is realized through the following technical scheme. The utility model relates to a regeneration energy-saving device of a gas phase dryer of an MTO device, which comprises a gas phase dryer, a feeding pipeline, a discharging pipeline, a nitrogen supply pipeline and a regenerated gas discharging pipeline, wherein the feeding pipeline, the discharging pipeline, the nitrogen supply pipeline and the regenerated gas discharging pipeline are communicated with the gas phase dryer; install electric heater on nitrogen gas supply pipe, still parallelly connected the heat transfer bypass on the nitrogen gas supply pipe, install heat exchanger and heat transfer control valve on the heat transfer bypass, the cold entry and the cold export of heat exchanger all communicate with the nitrogen gas supply pipe of electric heater inlet side, install first diverter valve on the nitrogen gas supply pipe between the cold entry of heat exchanger and cold export, the hot entry and the hot export of heat exchanger all communicate with regeneration gas discharge pipe, install the second diverter valve on the regeneration gas discharge pipe between the hot entry of heat exchanger and hot export.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above MTO device gas phase dryer regeneration economizer, gas phase dryer's top and charge-in pipeline intercommunication, the external feeding knockout drum of charge-in pipeline.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above MTO device gas phase dryer regeneration economizer, gas phase dryer's bottom and ejection of compact pipeline intercommunication still install the filter on the ejection of compact pipeline.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above MTO device gas phase dryer regeneration economizer, gas phase dryer's top and regeneration gas discharge pipe intercommunication, the external regeneration gas knockout drum of regeneration gas discharge pipe still install regeneration gas cooler on regeneration gas discharge pipe.
The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above MTO device gas phase dryer regeneration economizer, the device still includes the pressure release exhaust duct, the bottom and the pressure release exhaust duct intercommunication of gas phase dryer, the external compressor suction tank of pressure release exhaust duct.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above MTO device gas phase dryer regeneration economizer, the valve that is used for the control duct break-make is all installed with charge-in pipeline, ejection of compact pipeline, nitrogen gas supply pipeline and regeneration gas discharge pipe's intercommunication department to gas phase dryer.
The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above MTO device gas phase drying ware regeneration economizer, the gas phase drying ware is parallelly connected to form by two gas phase drying ware.
Compared with the prior art, the utility model fully utilizes the heat of the regenerated gas which exceeds 200 ℃ when the gas phase dryer is regenerated by the heat exchanger, and in the initial stage, the heat exchanger is not put into use; and after the constant temperature of the dryer is finished, the bypass is cut out of the heat exchanger, so that the dryer can be cooled normally. The device reasonable in design, energy-conserving high-efficient, effectively reduced regeneration nitrogen gas quantity and electric heater's operating power, the energy consumption descends obviously, and the programming rate is fast for the regeneration export of gas phase drying ware can reach design temperature, and the dew point satisfies the production requirement after the regeneration, and the regeneration time reduces about 5 hours.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the regeneration energy-saving device of a gas phase dryer of an MTO device comprises the gas phase dryer, a feeding pipeline 3, a discharging pipeline 4, a nitrogen supply pipeline 5 and a regeneration gas discharge pipeline 6 which are communicated with the gas phase dryer; the nitrogen gas supply pipeline 5 is provided with an electric heater 7, the nitrogen gas supply pipeline 5 is also connected with a heat exchange bypass in parallel, the heat exchange bypass is provided with a heat exchanger 8 and a heat exchange control valve 9, a cold inlet and a cold outlet of the heat exchanger 8 are both communicated with the nitrogen gas supply pipeline 5 at the inlet side of the electric heater 7, the nitrogen gas supply pipeline 5 between the cold inlet and the cold outlet of the heat exchanger 8 is provided with a first switching valve 10, a hot inlet and a hot outlet of the heat exchanger 8 are both communicated with a regeneration gas discharge pipeline 6 in parallel, and the regeneration gas discharge pipeline 6 between the hot inlet and the hot outlet of the heat exchanger 8 is provided with a second switching valve 11. Initially, the heat exchange control valve 9 is closed, the first switching valve 10 and the second switching valve 11 are opened, and nitrogen supplied by the nitrogen supply pipeline 5 respectively enters the gas phase dryer through the electric heater 7 and is discharged through the regeneration gas discharge pipeline 6; when the temperature of the regenerated gas discharged from the regenerated gas discharge pipeline 6 is higher than the temperature of the nitrogen supplied by the nitrogen supply pipeline 5, the heat exchange control valve 9 is opened, the first switching valve 10 and the second switching valve 11 are closed, so that the nitrogen supplied by the nitrogen supply pipeline 5 firstly enters the heat exchanger 8, the regenerated gas in the regenerated gas discharge pipeline 6 also passes through the heat exchanger 8, the nitrogen is preheated by the regenerated gas in the heat exchanger 8, and the preheated nitrogen is heated by the electric heater 7 and then is sent to the gas phase dryer, so that the initial temperature of the nitrogen entering the electric heater 7 is effectively increased, the temperature rise time of the nitrogen is reduced, and the power of the electric heater 7 is convenient to reduce; after the constant temperature of the gas phase dryer is finished, the heat exchange control valve 9 is closed, the first switching valve 10 and the second switching valve 11 are opened, the heat exchanger 8 is cut out, and the gas phase dryer can be cooled normally.
The top of the gas phase dryer is communicated with a feeding pipeline 3, and the feeding pipeline 3 is externally connected with a feeding separation tank. The feeding separating tank is a feeding separating tank in the prior art and is used for inputting materials into the gas phase dryer through a feeding pipeline 3 and drying the materials.
The bottom of the gas phase dryer is communicated with a discharge pipeline 4, and a filter 12 is further installed on the discharge pipeline 4. The filter 12 is used for filtering the material output by the gas phase dryer, so that the material output by the discharge pipeline 4 can be conveniently conveyed to the next process.
The top of the gas phase dryer is communicated with a regenerated gas discharge pipeline 6, the regenerated gas discharge pipeline 6 is externally connected with a regenerated gas separation tank 13, and a regenerated gas cooler 16 is further installed on the regenerated gas discharge pipeline 6. The regeneration gas separation tank 13 can be communicated with an external gas-liquid separator and is used for pumping the regeneration gas discharge pipeline 6, and the regeneration gas cooler 16 is used for cooling the regeneration gas discharged by the gas phase dryer; the regeneration gas separation tank 13 and the regeneration gas cooler 16 are both the regeneration gas separation tank 13 and the regeneration gas cooler 16 in the prior art.
The device also comprises a pressure relief exhaust pipeline 14, the bottom of the gas phase dryer is communicated with the pressure relief exhaust pipeline 14, and the pressure relief exhaust pipeline 14 is externally connected with a compressor suction tank. The compressor suction tank refers to a gas-liquid separator in the prior art, and comprises a compressor and a suction tank, wherein the compressor is used for pumping air and releasing pressure and exhausting air to a gas-phase dryer, the compressor is sucked to be gas, liquid can be left in the tank, the compressor is guaranteed not to suck the liquid and liquid impact is avoided, and the safety of the compressor is guaranteed.
And valves 15 for controlling the on-off of the pipelines are arranged at the communication positions of the gas phase dryer, the feeding pipeline 3, the discharging pipeline 4, the nitrogen supply pipeline 5 and the regeneration gas discharge pipeline 6. The valve 15 is arranged to control the on-off of the pipeline where the valve 15 is located, the valve 15 can be configured according to the attached drawing 1 of the application, in practice, the number of the valves 15 can be increased or decreased according to actual needs, and the whole device can be guaranteed to be safe and stable in operation.
The gas phase dryer is formed by connecting two gas phase dryers in parallel. The two gas phase dryers are respectively a first gas phase dryer 1 and a second gas phase dryer 2, and actually, a plurality of gas phase dryers can be arranged according to production needs.
Claims (7)
1. The utility model provides a MTO device gas phase dryer regeneration economizer which characterized in that: the device comprises a gas phase dryer, a feeding pipeline, a discharging pipeline, a nitrogen supply pipeline and a regeneration gas discharge pipeline, wherein the feeding pipeline, the discharging pipeline, the nitrogen supply pipeline and the regeneration gas discharge pipeline are communicated with the gas phase dryer; install electric heater on nitrogen gas supply pipe, still parallelly connected the heat transfer bypass on the nitrogen gas supply pipe, install heat exchanger and heat transfer control valve on the heat transfer bypass, the cold entry and the cold export of heat exchanger all communicate with the nitrogen gas supply pipe of electric heater inlet side, install first diverter valve on the nitrogen gas supply pipe between the cold entry of heat exchanger and cold export, the hot entry and the hot export of heat exchanger all communicate with regeneration gas discharge pipe, install the second diverter valve on the regeneration gas discharge pipe between the hot entry of heat exchanger and hot export.
2. The MTO unit gas phase dryer regeneration energy saving device of claim 1, wherein: the top of the gas phase dryer is communicated with a feeding pipeline, and the feeding pipeline is externally connected with a feeding separation tank.
3. The MTO unit gas phase dryer regeneration energy saving device of claim 1, wherein: the bottom of the gas phase dryer is communicated with a discharge pipeline, and a filter is further installed on the discharge pipeline.
4. The MTO unit gas phase dryer regeneration energy saving device of claim 1, wherein: the top of the gas phase dryer is communicated with a regenerated gas discharge pipeline, the regenerated gas discharge pipeline is externally connected with a regenerated gas separation tank, and a regenerated gas cooler is further installed on the regenerated gas discharge pipeline.
5. The MTO unit gas phase dryer regeneration energy saving device of claim 1, wherein: the device also comprises a pressure relief exhaust pipeline, the bottom of the gas phase dryer is communicated with the pressure relief exhaust pipeline, and the pressure relief exhaust pipeline is externally connected with a compressor suction tank.
6. The MTO unit gas phase dryer regeneration energy saving device of claim 1, wherein: and valves for controlling the on-off of the pipelines are arranged at the communication parts of the gas phase dryer, the feeding pipeline, the discharging pipeline, the nitrogen supply pipeline and the regenerated gas discharging pipeline.
7. The MTO unit gas phase dryer regeneration energy saving device of claim 1, wherein: the gas phase dryer is formed by connecting two gas phase dryers in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921772137.3U CN210993636U (en) | 2019-10-22 | 2019-10-22 | Regeneration energy-saving device for gas phase dryer of MTO device |
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| CN201921772137.3U CN210993636U (en) | 2019-10-22 | 2019-10-22 | Regeneration energy-saving device for gas phase dryer of MTO device |
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| CN210993636U true CN210993636U (en) | 2020-07-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844347A (en) * | 2021-01-27 | 2021-05-28 | 浙江华泓新材料有限公司 | Dryer regeneration gas heater system |
| CN113267001A (en) * | 2021-05-14 | 2021-08-17 | 中国核电工程有限公司 | Drying device and drying method for radioactive zirconium cladding pipe section |
| CN116440664A (en) * | 2023-06-20 | 2023-07-18 | 德州能奥石油科技有限公司 | Drying device for mixed hydrocarbon production |
-
2019
- 2019-10-22 CN CN201921772137.3U patent/CN210993636U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844347A (en) * | 2021-01-27 | 2021-05-28 | 浙江华泓新材料有限公司 | Dryer regeneration gas heater system |
| CN113267001A (en) * | 2021-05-14 | 2021-08-17 | 中国核电工程有限公司 | Drying device and drying method for radioactive zirconium cladding pipe section |
| CN116440664A (en) * | 2023-06-20 | 2023-07-18 | 德州能奥石油科技有限公司 | Drying device for mixed hydrocarbon production |
| CN116440664B (en) * | 2023-06-20 | 2023-08-22 | 德州能奥石油科技有限公司 | Drying device for mixed hydrocarbon production |
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