Crude methanol recovery device
By designing a crude methanol recovery unit, the environmental pollution and safety hazards caused by emissions from the gas-liquid separator were solved, and the recovery and processing of crude methanol were realized, improving material utilization and increasing economic benefits.
Patent Information
- Application Number
- CN202520199507.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-08
AI Technical Summary
In existing technologies, crude methanol separated by the gas-liquid separator at the inlet of the screw compressor in isobutylene plants is directly discharged into the sewer, causing environmental pollution, increasing the difficulty of wastewater treatment and safety hazards, and resulting in material loss.
A crude methanol recovery device was designed, including components such as a gas-liquid separator, a crude toluene recovery tank, a filter, a heater, a distillation column, a condenser, a reflux tank, and a spray device. Through filtration, heating, condensation, and spraying, crude methanol is recovered and processed.
This technology enables the recovery and processing of crude methanol, avoiding environmental pollution, reducing wastewater treatment costs, improving material utilization, and increasing economic benefits.
Smart Images
Figure CN223788084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of crude methanol recovery devices, and particularly to a crude methanol recovery device. Background Technology
[0002] The gas-liquid separator at the inlet of the screw compressor in the isobutylene plant separates some crude methanol during production. Currently, the crude methanol separated by the gas-liquid separator is directly discharged into a sewer, which has several drawbacks, including environmental pollution, increased difficulty and cost of wastewater treatment, potential safety hazards, and material loss. Utility Model Content
[0003] To solve the above-mentioned technical problems, this application provides a crude methanol recovery device, which is achieved through the following technical solution:
[0004] A crude methanol recovery device includes a gas-liquid separator. The bottom of the gas-liquid separator is connected to a crude toluene recovery tank via a pipeline. The crude toluene recovery tank is connected to a feed pump. The feed pump is connected to a filter. The filter is connected to a heating pipeline. The heating pipeline is sequentially connected to a preheater and a heater. The heater is connected to a distillation column. The top of the distillation column is connected to a condenser. A condenser is installed on the condenser. The condenser is connected to a reflux tank. The reflux tank is connected to the upper part of the distillation column via a reflux pipeline. A reflux pump is installed on the reflux pipeline. A spray device is installed inside the distillation column at the connection point between the reflux pipeline and the distillation column. The spray device includes a spray pipe with several nozzles.
[0005] The reflux pipeline is connected to the finished methanol pipeline, the finished methanol pipeline is equipped with a cooler, and the finished methanol pipeline is connected to the finished methanol storage tank.
[0006] The bottom of the distillation column is connected to a reboiler via a reboiler pipeline. The reboiler is connected to the lower part of the distillation column via a vaporization pipeline. One end of the reboiler is connected to a hot steam input pipeline, which is connected to a heat exchange coil inside the reboiler. The outlet of the heat exchange coil is connected to a condensate outlet pipeline.
[0007] As a preferred embodiment, the crude toluene recovery tank is equipped with a pressure gauge, a safety valve, and a level gauge.
[0008] As a preferred embodiment, the spray pipe is in the shape of a cross.
[0009] As a preferred embodiment, the crude toluene recovery tank is connected to the flare line.
[0010] Compared with the prior art, the beneficial effects of this utility model are: this utility model can recover and process the crude methanol separated by the gas-liquid separator during the production process, and finally produce usable methanol products, which not only avoids environmental pollution, but also increases revenue. Attached Figure Description
[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0012] Figure 1 This is a schematic diagram of the connection structure of this utility model;
[0013] Figure 2 This is a top view schematic diagram of the spray pipe structure of this utility model. Detailed Implementation
[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:
[0015] A crude methanol recovery device includes a gas-liquid separator 1. The bottom of the gas-liquid separator 1 is connected to a crude toluene recovery tank 3 via a pipeline 2. The crude toluene recovery tank 3 is connected to a feed pump 4. The feed pump 4 is connected to a filter 5. The filter 5 is connected to a heating pipeline 6. The heating pipeline 6 is sequentially connected to a preheater 7 and a heater 8. The heater 8 is connected to a distillation column 9. The top of the distillation column 9 is connected to a condenser pipeline 10. A condenser 11 is installed on the condenser pipeline 10. The condenser pipeline 10 is connected to a reflux tank 12. The reflux tank 12 is connected to the upper part of the distillation column 9 via a reflux pipeline 13. A reflux pump 14 is installed on the reflux pipeline 13. A spray device 15 is installed inside the distillation column 9 at the connection between the reflux pipeline 13 and the distillation column 9. The spray device 15 includes a spray pipe 16 with several nozzles 17.
[0016] The reflux line 13 is connected to the finished methanol line 18, the finished methanol line 18 is equipped with a cooler 19, and the finished methanol line 18 is connected to the finished methanol storage tank 20.
[0017] The bottom of the distillation column 9 is connected to the kettle reboiler 22 via a reboiler line 21. The kettle reboiler 22 is connected to the lower part of the distillation column 9 via a vaporization line 23. One end of the kettle reboiler 22 is connected to a hot steam input line 24. The hot steam input line 24 is connected to a heat exchange coil 25 inside the kettle reboiler 22. The outlet of the heat exchange coil 25 is connected to a condensate outlet line 26.
[0018] Furthermore, the crude toluene recovery tank 3 is equipped with a pressure gauge 27, a safety valve 28, and a level gauge 29.
[0019] Furthermore, the spray pipe 16 is in the shape of a cross.
[0020] Furthermore, the crude toluene recovery tank 3 is connected to the flare line 30.
[0021] During operation, the crude methanol recovery unit collects the crude methanol separated in the gas-liquid separator 1 into the crude toluene recovery tank 3. The crude toluene in the recovery tank 3 is then fed into the filter 5 via the feed pump 4 to remove impurities, preventing pipe blockage and potential safety hazards during subsequent processing. The purified crude toluene is then heated by the preheater 7 and heater 8 before being fed into the distillation column 9 for distillation. The preheating process in the preheater 7 and heater 8 accelerates the distillation process and improves efficiency. In the distillation column 9, the liquid crude methanol placed at the bottom of the distillation column 9 enters the kettle reboiler 22 for heating and vaporization. The methanol after distillation and vaporization rises to the top of the distillation column 9 and is collected by the condenser line 10 and enters the reflux tank 12. Before entering the reflux tank 12, it is condensed and liquefied by the condenser 11. Part of the methanol product entering the reflux tank 12 is sent to the finished methanol storage tank 20 for storage via the finished methanol line 18, and part of it is returned to the distillation column 9. When the temperature of the distillation column 9 is too high, the interior of the distillation column 9 is sprayed with water by the spray device 15 to cool it down.
[0022] The specific implementation of this utility model has been described in detail above, but it is only an example. This utility model is not limited to the specific implementation cases described above, and equivalent modifications to this utility model are also within the protection scope of this utility model.
Claims
1. A crude methanol recovery apparatus, characterized by comprising: The application relates to a crude benzol recovery device, which comprises a gas-liquid separation tank (1), a crude benzol recovery tank (3) connected with the gas-liquid separation tank (1) through a pipeline (2), a feed pump (4) connected with the crude benzol recovery tank (3), a filter (5) connected with the feed pump (4), a heating pipeline (6) connected with the filter (5) in sequence, a preheater (7) and a heater (8) connected with the heating pipeline (6), a rectifying tower (9) connected with the heater (8), a condensing pipeline (10) connected with the top of the rectifying tower (9), a condenser (11) arranged on the condensing pipeline (10), a reflux tank (12) connected with the condensing pipeline (10), a reflux pipeline (13) connected with the upper part of the rectifying tower (9) and a reflux pump (14) arranged on the reflux pipeline (13), a spraying device (15) arranged in the rectifying tower (9) at the connection position of the reflux pipeline (13) and the rectifying tower (9), wherein the spraying device (15) comprises a spraying pipe (16) and a plurality of nozzles (17) arranged on the spraying pipe (16). A finished product methanol pipeline (18) is connected with the reflux pipeline (13), a cooler (19) is arranged on the finished product methanol pipeline (18), and a finished product methanol storage tank (20) is connected with the finished product methanol pipeline (18). The bottom of the rectifying tower (9) is connected with a kettle-type reboiler (22) through a reboiling pipeline (21), the kettle-type reboiler (22) is connected with the lower part of the rectifying tower (9) through a vaporization pipeline (23), one end of the kettle-type reboiler (22) is connected with a hot steam input pipeline (24), the hot steam input pipeline (24) is communicated with a heat exchange coil (25) in the kettle-type reboiler (22), and a condensed water outlet pipeline (26) is connected with the outlet of the heat exchange coil (25).
2. The crude methanol recovery apparatus according to claim 1, characterized by A pressure gauge (27), a safety valve (28) and a liquid level meter (29) are arranged on the crude benzol recovery tank (3).
3. The crude methanol recovery apparatus according to claim 1, characterized by The spraying pipe (16) is in a cross shape.
4. The crude methanol recovery apparatus according to claim 1, characterized by The crude benzol recovery tank (3) is connected with a flare pipeline (30). The crude benzol recovery tank (3) is connected with a flare pipeline (30).