CN210229925U - Chemical raw material pretreatment system - Google Patents
Chemical raw material pretreatment system Download PDFInfo
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- CN210229925U CN210229925U CN201920931809.4U CN201920931809U CN210229925U CN 210229925 U CN210229925 U CN 210229925U CN 201920931809 U CN201920931809 U CN 201920931809U CN 210229925 U CN210229925 U CN 210229925U
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- light hydrocarbon
- raw material
- hydrocarbon removal
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Abstract
The utility model belongs to the technical field of chemical production equipment, specifically be a chemical raw materials pretreatment systems. Including a heat exchanger, this heat exchanger passes through the pipeline and is connected with a feeding buffer tank, this buffer tank passes through the pipeline and is connected with liquefied gas raw material pump, this raw material pump communicates the middle part of scrubbing tower through the pipeline, a circulation pipeline is drawn forth to the bottom of scrubbing tower simultaneously, be equipped with the washing water pump on the circulation pipeline, the upper end of circulation pipeline communicates the upper portion of scrubbing tower, a discharging pipe is drawn forth at the top of this scrubbing tower, this discharging pipe is connected with an export buffer tank, this export buffer tank passes through the pipeline and is connected with raw materials charge pump. The feeding system can adapt to the climate with low temperature in winter, the phenomenon of icing in the washing tower is avoided, the phenomenon of idling of a circulating water pump of the washing tower is avoided, the liquid level of the washing tower is stable and free of fluctuation, the phenomenon of carrying water is avoided, and the product percent of pass of the light component removing tower is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of chemical production equipment, specifically be a chemical raw materials pretreatment systems.
Background
In the chemical plant, the raw materials are directly fed into a raw material tank from a tank field, then the raw materials enter a washing tower through a liquefied gas raw material pump, the temperature is low in winter, the washing tower is often frozen, the phenomenon of idling of a circulating water pump of the washing tower occurs, the phenomenon of liquid level remote transmission fluctuation of the washing tower is large and the liquid level is inaccurate, the phenomenon of water carrying and light hydrocarbon removal tower product disqualification occurs.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model provides a chemical raw material pretreatment system, including a heat exchanger, this heat exchanger is connected with a feeding buffer tank through the pipeline, this buffer tank is connected with liquefied gas raw material pump through the pipeline, this raw material pump communicates the lower part of washing tower through the pipeline, a circulation pipeline is drawn forth to the bottom of washing tower simultaneously, be equipped with the washing water pump on the circulation pipeline, the upper end of circulation pipeline communicates the upper portion of washing tower, a discharging pipe is drawn forth to the top of this washing tower, this discharging pipe is connected with an export buffer tank, this export buffer tank is connected with raw materials feeding pump through the pipeline, the feeding pump is arranged in carrying out the raw materials and feeds to the required process flow;
the device further comprises a light hydrocarbon removal treatment unit, wherein the light hydrocarbon removal treatment unit is connected with the raw material feeding pump and comprises a tower bottom heat exchanger connected with the raw material feeding pump, the tower bottom heat exchanger is connected to the middle part of a light hydrocarbon removal tower, a pipeline is led out from the upper part of the tower top and is connected with a light hydrocarbon removal tower top reflux tank, and a tank removal area pipeline is also arranged at the upper part of the reflux tank; the bottom of the reflux tank is provided with a pipeline communicated with the top of the light hydrocarbon removal tower, and the pipeline is provided with a valve and a light hydrocarbon removal tower reflux pump; in addition, a pipeline is communicated between the bottom of the light hydrocarbon removal tower and a heat exchanger at the bottom of the light hydrocarbon removal tower, the heat exchanger at the bottom of the light hydrocarbon removal tower is also connected with a cooler at the bottom of the light hydrocarbon removal tower, and the raw material at the bottom of the tower passes through the heat exchanger at the bottom of the light hydrocarbon removal tower, then enters the cooler at the bottom of the light hydrocarbon removal tower and flows to the raw material dehydrator.
Furthermore, a washing tower span line which is connected with the washing tower in parallel is externally connected to a pipeline between the raw material pump and the washing tower, and the outlet end of the span line is connected into the outlet buffer tank.
The feeding system can adapt to the climate with low temperature in winter, the phenomenon of icing in the washing tower is avoided, the phenomenon of idling of a circulating water pump of the washing tower is avoided, the liquid level of the washing tower is stable and free of fluctuation, the phenomenon of carrying water is avoided, and the product percent of pass of the light component removing tower is greatly improved.
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 present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the utility model provides a chemical raw material pretreatment system, including a heat exchanger 1, this heat exchanger 1 is connected with a feeding buffer tank 2 through the pipeline, this feeding buffer tank 2 is connected with liquefied gas raw material pump 3 through the pipeline, this raw material pump 3 communicates the lower part of washing tower 4 through the pipeline, a circulation pipeline 5 is drawn forth to the bottom of washing tower 4 simultaneously, be equipped with washing water pump 6 on the circulation pipeline 5, the upper end of circulation pipeline 5 communicates the upper portion of washing tower 4, a discharging pipe 7 is drawn forth at the top of washing tower 4, this discharging pipe 7 is connected with an export buffer tank 8, this export buffer tank 8 is connected with raw material feed pump 9 through the pipeline, raw material feed pump 9 is used for feeding the raw materials to the raw material dehydrator;
as an improvement of the scheme, the device also comprises a light hydrocarbon removal treatment unit which is connected with a raw material feeding pump 9 and comprises a tower bottom heat exchanger 11 connected with the raw material feeding pump, wherein the tower bottom heat exchanger 11 is connected to the middle part of a light hydrocarbon removal tower 12, a pipeline is led out from the upper part of the top of the light hydrocarbon removal tower 12, a light hydrocarbon removal tower top condenser 17 is arranged on the pipeline, the other end of the pipeline is connected to a light hydrocarbon removal tower top reflux tank 13, and a tank removal area pipeline 14 is also arranged on the upper part of the reflux tank 13; the bottom of the reflux tank 13 is provided with a pipeline 15 communicated with the top of the light hydrocarbon removal tower 12, and the pipeline is provided with a valve and a light hydrocarbon removal tower reflux pump 16; in addition, a pipeline is communicated between the bottom of the light hydrocarbon removing tower 12 and the light hydrocarbon removing tower bottom heat exchanger 11, the light hydrocarbon removing tower bottom heat exchanger 11 is also connected with a light hydrocarbon removing tower bottom cooler 17, and the tower bottom raw material passes through the light hydrocarbon removing tower bottom heat exchanger 11, then enters the light hydrocarbon removing tower bottom cooler 17 and flows to the raw material dehydrator.
As an improvement of the scheme, a water washing tower span line 10 which is mutually connected in parallel with the water washing tower is externally connected to a pipeline between the raw material pump 3 and the water washing tower 4, and the outlet end of the span line 10 is connected into the outlet buffer tank 8.
The etherified tetracarbon and the isobutane from the tank area enter a heat exchanger and then enter a feeding buffer tank, enter the bottom of a washing tower after being boosted by a liquefied gas raw material pump, are mixed and separated with washing water entering from the upper part of the washing tower in the tower, remove water-soluble impurities such as methanol and the like in the washing water, are discharged from the top and enter an outlet buffer tank; the washing water is discharged from the bottom of the tower, is pressurized by a washing water pump and then is recycled, and is quantitatively like fresh desalted water is supplemented in the washing tower and the washing water is discharged.
The mixed carbon four in the outlet buffer tank is pressurized by a raw material feeding pump, then preheated by a mixed carbon four/light hydrocarbon removal tower bottom heat exchanger and then enters a light hydrocarbon removal tower, the gas phase at the tower top is condensed by a light hydrocarbon removal tower top condenser and then enters a light hydrocarbon removal tower top reflux tank, the condensate is pressurized by a light hydrocarbon removal tower top reflux pump and then divided into two parts, one part is taken as a byproduct and is mixed with a normal butane tower top product and then sent to a tank area, the other part is taken as tower top reflux, and the non-condensable gas is sent to a fuel gas system; the tower bottom material is sent to the reaction and refrigeration part after heat exchange and cooling. The light dydrocarbon removing tower adopts 1.0MPa steam as a heat source.
The material at the bottom of the light hydrocarbon removal tower is subjected to heat exchange and cooling to 40 ℃ by a mixed carbon four/light hydrocarbon removal tower bottom heat exchanger and a light hydrocarbon removal tower bottom cooler, and then enters a raw material dehydrator.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. A chemical feedstock pretreatment system, characterized by: including a heat exchanger, this heat exchanger passes through the pipeline and is connected with a feeding buffer tank, this buffer tank passes through the pipeline and is connected with liquefied gas raw material pump, this raw material pump communicates the lower part of scrubbing tower through the pipeline, a circulation pipeline is drawn forth to the bottom of scrubbing tower simultaneously, be equipped with the washing water pump on the circulation pipeline, the upper end of circulation pipeline communicates the upper portion of scrubbing tower, a discharging pipe is drawn forth at the top of this scrubbing tower, this discharging pipe is connected with an export buffer tank, this export buffer tank passes through the pipeline and is connected with raw materials charge pump.
2. A chemical feedstock pretreatment system as recited in claim 1, further comprising: the light hydrocarbon removal treatment unit is connected with the raw material feeding pump and comprises a tower bottom heat exchanger connected with the raw material feeding pump, the tower bottom heat exchanger is connected to the middle part of a light hydrocarbon removal tower, a pipeline is led out from the upper part of the tower top, a light hydrocarbon removal tower top condenser is arranged on the pipeline, the pipeline is connected with a light hydrocarbon removal tower top reflux tank, and a tank removal area pipeline is also arranged at the upper part of the reflux tank; the bottom of the reflux tank is provided with a pipeline communicated with the top of the light hydrocarbon removal tower, and the pipeline is provided with a valve and a light hydrocarbon removal tower reflux pump; in addition, a pipeline is communicated between the bottom of the light hydrocarbon removal tower and a heat exchanger at the bottom of the light hydrocarbon removal tower, the heat exchanger at the bottom of the light hydrocarbon removal tower is also connected with a cooler at the bottom of the light hydrocarbon removal tower, and the raw material at the bottom of the tower passes through the heat exchanger at the bottom of the light hydrocarbon removal tower, then enters the cooler at the bottom of the light hydrocarbon removal tower and flows to the raw material dehydrator.
3. A chemical feedstock pretreatment system as recited in claim 1, further comprising: a pipeline between the raw material pump and the washing tower is externally connected with a washing tower span line which is mutually connected with the washing tower in parallel, and the outlet end of the span line is connected into the outlet buffer tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931809.4U CN210229925U (en) | 2019-06-20 | 2019-06-20 | Chemical raw material pretreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931809.4U CN210229925U (en) | 2019-06-20 | 2019-06-20 | Chemical raw material pretreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210229925U true CN210229925U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920931809.4U Active CN210229925U (en) | 2019-06-20 | 2019-06-20 | Chemical raw material pretreatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210229925U (en) |
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2019
- 2019-06-20 CN CN201920931809.4U patent/CN210229925U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Chemical Raw Material Pretreatment System Effective date of registration: 20230506 Granted publication date: 20200403 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: Liaoning Yifang Petrochemical Co.,Ltd. Registration number: Y2023210000098 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |