CN220413265U - Novel coal tar system of processing - Google Patents
Novel coal tar system of processing Download PDFInfo
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- CN220413265U CN220413265U CN202322147191.1U CN202322147191U CN220413265U CN 220413265 U CN220413265 U CN 220413265U CN 202322147191 U CN202322147191 U CN 202322147191U CN 220413265 U CN220413265 U CN 220413265U
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- tar
- communicated
- heat exchanger
- rectifying tower
- pipeline
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- 239000011280 coal tar Substances 0.000 title claims abstract description 52
- 239000011269 tar Substances 0.000 claims abstract description 78
- 239000002918 waste heat Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 19
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 62
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000011294 coal tar pitch Substances 0.000 claims description 10
- 239000011271 tar pitch Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 abstract description 36
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000003345 natural gas Substances 0.000 description 5
- 239000010426 asphalt Substances 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 4
- 238000004821 distillation Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000011300 coal pitch Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model relates to a novel coal tar processing system, and belongs to the technical field of energy recovery in the chemical industry. The mixed oil/tar heat exchanger is provided with a waste heat medium channel and a material supply channel, wherein a cold medium inlet at one end of the material supply channel is communicated with a discharge port of a pump A through a pipeline, a cold medium outlet at the other end of the material supply channel is communicated with an inlet of a rectifying tower A through a pipeline, a heat medium inlet at one end of the waste heat medium channel is communicated with a heat medium outlet of a reboiler through a pipeline, and a heat medium inlet of the reboiler is communicated with an outlet at the top of the rectifying tower B. The beneficial effects are that: raw material tar from a raw material tank enters the rectifying tower A after being subjected to heat exchange and temperature rise by a mixed oil/tar heat exchanger, and the raw material tar can meet the feeding temperature requirement of the rectifying tower A without being preheated by a raw material tar steam preheater, so that the low-pressure steam consumption is reduced, and the energy-saving purpose is achieved.
Description
Technical Field
The utility model relates to a novel coal tar processing system, and belongs to the technical field of energy recovery in the chemical industry.
Background
The coal tar processing is to cut the distillation range by distillation according to the different boiling points of the components of the coal tar.
The existing coal tar processing system comprises a raw material tank, a pump A, a rectifying tower A, a pump B, a heating furnace and a rectifying tower B, wherein a discharge hole of the raw material tank is communicated with a feed inlet of the pump A, the bottom of the rectifying tower A is connected with a reboiler, a bottom outlet of the rectifying tower A is communicated with an inlet of the heating furnace through a pipeline, an outlet of the heating furnace is communicated with an inlet of the rectifying tower B, and the existing coal tar processing system further comprises a steam preheater for preheating steam of raw material coal tar.
The prior art has the following disadvantages that the consideration is incomplete:
in the prior art, raw material coal tar is firstly preheated by steam, then enters a natural gas furnace for heating, and then enters a rectifying tower for distillation, so that a large amount of natural gas is consumed. The temperature of the tower top extract of the rectifying tower is higher, but the heat of the tower top extract cannot be effectively utilized to exchange heat with tar at present, and the high-quality energy of the lateral line mixture is not fully utilized, so that a great amount of energy is wasted.
What is needed is a novel coal tar processing system, which is capable of realizing that mixed oil is used as a waste heat medium to provide a heat source for a mixed oil/tar heat exchanger, heating raw material tar from a raw material tank, and eliminating a raw material steam preheater, thereby realizing recycling of a high-quality heat source, reducing consumption of steam and natural gas, and achieving the purposes of energy conservation and emission reduction.
Disclosure of Invention
In order to solve one of the above problems, according to the above shortcomings in the prior art, the present utility model aims to solve the technical problems: how to realize that the mixed oil is used as a waste heat medium to provide a heat source for the mixed oil/tar heat exchanger so as to heat the raw material tar from the raw material tank, and therefore, a novel coal tar processing system is provided.
The novel coal tar processing system comprises a raw material tank, a pump A, a rectifying tower A, a pump B, a heating furnace and a rectifying tower B, wherein a discharge hole of the raw material tank is communicated with a feed inlet of the pump A, the bottom of the rectifying tower A is connected with a reboiler, a tower bottom outlet of the rectifying tower A is communicated with an inlet of the heating furnace through a pipeline, and an outlet of the heating furnace is communicated with an inlet of the rectifying tower B, and the novel coal tar processing system is characterized in that:
the device also comprises a mixed oil/tar heat exchanger which is provided with a waste heat medium channel and a material supply channel,
the flowing medium in the waste heat medium channel exchanges heat with the flowing medium in the material supply channel,
a cold medium inlet at one end of the material supply channel is communicated with a discharge port of the pump A through a pipeline,
the cold medium outlet at the other end of the material supply channel is communicated with the inlet of the rectifying tower A through a pipeline,
the heat medium inlet at one end of the waste heat medium channel is communicated with the heat medium outlet of the reboiler through a pipeline, the heat medium outlet at the other end of the waste heat medium channel is communicated with the mixing oil tank through a pipeline, and the heat medium inlet of the reboiler is communicated with the top outlet of the rectifying tower B.
The mixed oil discharged from the top outlet of the rectifying tower B enters the reboiler through a heat medium inlet of the reboiler, and the mixed oil is used as a waste heat medium to provide a heat source for the reboiler.
Meanwhile, a heat medium outlet of the reboiler is connected with a heat medium inlet of the mixed oil/tar heat exchanger, and the mixed oil is used as a waste heat medium to provide a heat source for the mixed oil/tar heat exchanger, so that raw tar from a raw material tank is heated.
Raw material tar from a raw material tank enters the rectifying tower A after being subjected to heat exchange and temperature rise by a mixed oil/tar heat exchanger, and the raw material tar can meet the feeding temperature requirement of the rectifying tower A without being preheated by a raw material tar steam preheater, so that the low-pressure steam consumption is reduced, and the energy-saving purpose is achieved.
Preferably, the device also comprises an anthracene oil/tar heat exchanger, wherein the middle outlet of the rectifying tower B is communicated with the heat medium inlet of the anthracene oil/tar heat exchanger through a pipeline, and the heat medium outlet of the anthracene oil/tar heat exchanger is communicated with an anthracene oil tank through a pipeline.
Preferably, the coal tar/coal tar heat exchanger also comprises a coal tar/coal tar heat exchanger, wherein the bottom outlet of the rectifying tower B is communicated with the heat medium inlet of the coal tar/coal tar heat exchanger through a pipeline, a pump C is arranged on the pipeline between the rectifying tower B and the coal tar/coal tar heat exchanger, and the heat medium outlet of the coal tar/coal tar heat exchanger is communicated with the coal tar tank through a pipeline.
Preferably, the cold medium outlet of the anthracene oil/tar heat exchanger is connected with the cold medium inlet of the coal tar/tar heat exchanger, the cold medium outlet of the coal tar/tar heat exchanger is connected with the inlet of the heating furnace, and the cold medium inlet of the anthracene oil/tar heat exchanger is communicated with the rectifying tower A through the pump B.
Preferably, the circulation inlet and the circulation outlet at the bottom of the rectifying tower A are respectively communicated with the cold medium outlet and the cold medium inlet of the reboiler, and the temperature is raised by using the existing reboiler.
Preferably, the feed inlet of the pump B is communicated with the bottom outlet of the rectifying tower A, the discharge outlet of the pump is connected with a first connecting port of a tee joint, a second connecting port and a third connecting port of the tee joint are respectively communicated with a cold medium inlet of a reboiler and a cold medium inlet of an anthracene oil/tar heat exchanger, and electric control valves are respectively arranged on the second connecting port and the third connecting port to control the on-off of corresponding pipelines.
Compared with the prior art, the utility model has the following beneficial effects:
according to the novel coal tar processing system, the mixed oil/tar heat exchanger, the anthracene oil/tar heat exchanger and the coal pitch/tar heat exchanger are additionally arranged, distillate of the rectifying tower is utilized to preheat and exchange the tar respectively, and the raw material steam preheater is omitted, so that recycling of a high-quality heat source is realized, consumption of steam and natural gas is reduced, and the purposes of energy conservation and emission reduction are achieved.
According to the novel coal tar processing system, the mixed oil/tar heat exchanger, the anthracene oil/tar heat exchanger and the coal pitch/tar heat exchanger are utilized, distillate of the rectifying tower is utilized to preheat and exchange the tar respectively, and the raw material steam preheater is omitted, so that the recycling of a high-quality heat source is realized, the consumption of steam and natural gas is reduced, and the purposes of energy conservation and emission reduction are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the structural principle of the present utility model;
in the figure: 1. raw material tank 2, pump A3, mixed oil/tar heat exchanger 4, rectifying tower A5, pump B6, reboiler 7, mixed oil tank 8, pump C9, heating furnace 10, rectifying tower B11, anthracene oil/tar heat exchanger 12, anthracene oil tank 13, coal tar heat exchanger 14, coal tar tank.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
the present utility model is further illustrated by the following examples, which are not intended to be limiting, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.
Embodiment 1, as shown in fig. 1, the novel coal tar processing system comprises a raw material tank 1, a pump A2, a rectifying tower A4, a pump B5, a heating furnace 9 and a rectifying tower B10, wherein a discharge port of the raw material tank 1 is communicated with a feed port of the pump A2, the bottom of the rectifying tower A4 is connected with a reboiler 6, a bottom outlet of the rectifying tower A4 is communicated with an inlet of the heating furnace 9 through a pipeline, an outlet of the heating furnace 9 is communicated with an inlet of the rectifying tower B10, the novel coal tar processing system further comprises a mixed oil/tar heat exchanger 3, the mixed oil/tar heat exchanger 3 is provided with a waste heat medium channel and a material supply channel,
the flowing medium in the waste heat medium channel exchanges heat with the flowing medium in the material supply channel,
a cold medium inlet at one end of the material supply channel is communicated with a discharge port of the pump A2 through a pipeline,
the cold medium outlet at the other end of the material supply channel is communicated with the inlet of the rectifying tower A4 through a pipeline,
a heat medium inlet at one end of the waste heat medium channel is communicated with a heat medium outlet of the reboiler 6 through a pipeline,
the heat medium outlet at the other end of the waste heat medium channel is communicated with the mixing oil groove 7 through a pipeline,
the heat medium inlet of the reboiler 6 is communicated with the top outlet of the rectifying tower B10.
The mixed oil discharged from the top outlet of the rectifying tower B10 enters the reboiler 6 through the heat medium inlet of the reboiler 6, and the mixed oil is used as a waste heat medium to provide a heat source for the reboiler.
Meanwhile, the heat medium outlet of the reboiler 6 is connected with the heat medium inlet of the mixed oil/tar heat exchanger 3, and the mixed oil is used as a waste heat medium to provide a heat source for the mixed oil/tar heat exchanger 3, so that the raw tar from the raw material tank 1 is heated.
Raw material tar from the raw material tank 1 enters the rectifying tower A4 after being subjected to heat exchange and temperature rise by the mixed oil/tar heat exchanger 3, and the feeding temperature requirement of the rectifying tower A4 can be met without preheating by the raw material tar steam preheater, so that the low-pressure steam consumption is reduced, and the energy-saving purpose is achieved.
Embodiment 2, as shown in fig. 1, the novel coal tar processing system comprises a raw material tank 1, a pump A2, a rectifying tower A4, a pump B5, a heating furnace 9 and a rectifying tower B10, wherein a discharge port of the raw material tank 1 is communicated with a feed port of the pump A2, the bottom of the rectifying tower A4 is connected with a reboiler 6, a bottom outlet of the rectifying tower A4 is communicated with an inlet of the heating furnace 9 through a pipeline, an outlet of the heating furnace 9 is communicated with an inlet of the rectifying tower B10, the novel coal tar processing system further comprises a mixed oil/tar heat exchanger 3, the mixed oil/tar heat exchanger 3 is provided with a waste heat medium channel and a material supply channel,
the flowing medium in the waste heat medium channel exchanges heat with the flowing medium in the material supply channel,
a cold medium inlet at one end of the material supply channel is communicated with a discharge port of the pump A2 through a pipeline,
the cold medium outlet at the other end of the material supply channel is communicated with the inlet of the rectifying tower A4 through a pipeline,
a heat medium inlet at one end of the waste heat medium channel is communicated with a heat medium outlet of the reboiler 6 through a pipeline,
the heat medium outlet at the other end of the waste heat medium channel is communicated with the mixing oil groove 7 through a pipeline,
the heat medium inlet of the reboiler 6 is communicated with the top outlet of the rectifying tower B10.
Further, the device also comprises an anthracene oil/tar heat exchanger 11, wherein the outlet in the middle of the rectifying tower B10 is communicated with the heat medium inlet of the anthracene oil/tar heat exchanger 11 through a pipeline, and the heat medium outlet of the anthracene oil/tar heat exchanger 11 is communicated with an anthracene oil tank 12 through a pipeline.
Further, the device also comprises a coal tar/asphalt heat exchanger 13, wherein the bottom outlet of the rectifying tower B10 is communicated with the heat medium inlet of the coal tar/asphalt heat exchanger 13 through a pipeline, a pump C8 is arranged on the pipeline between the rectifying tower B10 and the coal tar/asphalt heat exchanger 13, and the heat medium outlet of the coal tar/asphalt heat exchanger 13 is communicated with a coal tar tank 14 through a pipeline.
Further, the cold medium outlet of the anthracene oil/tar heat exchanger 11 is connected with the cold medium inlet of the coal tar/tar heat exchanger 13, the cold medium outlet of the coal tar/tar heat exchanger 13 is connected with the inlet of the heating furnace 9, and the cold medium inlet of the anthracene oil/tar heat exchanger 11 is communicated with the rectifying tower A4 through a pump B5.
Further, the circulation inlet and the circulation outlet at the bottom of the rectifying tower A4 are respectively communicated with the cold medium outlet and the cold medium inlet of the reboiler 6, and the temperature is raised by the reboiler 6.
Further, the feed inlet of the pump B5 is communicated with the bottom outlet of the rectifying tower A4, the discharge outlet of the pump B5 is connected with a first connecting port of a tee joint, a second connecting port and a third connecting port of the tee joint are respectively communicated with a cold medium inlet of the reboiler 6 and a cold medium inlet of the anthracene oil/tar heat exchanger 11, and electric control valves are respectively arranged on the second connecting port and the third connecting port to control the on-off of corresponding pipelines.
Raw material tar in the raw material tank 1 enters a rectifying tower A4 through a pump A2 and a mixed oil/tar heat exchanger 3, and tar discharged from the bottom of the rectifying tower A4 enters a reboiler 6 through a three-way branch pipe by a pump B5, and is connected with a cold medium inlet of an anthracene oil/tar heat exchanger 11 through another branch pipe of the three way. The cold medium outlet of the reboiler 6 is connected with the circulation inlet of the rectifying tower A4.
The cold medium outlet of the anthracene oil/tar heat exchanger 11 is connected with the cold medium inlet of the coal tar/tar heat exchanger 13, the cold medium outlet of the coal tar/tar heat exchanger 13 is connected with the inlet of the heating furnace 9, and the heating furnace 9 is connected with the inlet of the rectifying tower B10.
The mixed oil discharged from the top of the rectifying tower B10 enters a heat medium inlet of the reboiler 6, and the mixed oil provides a heat source for the reboiler. The reboiler 6 heat medium outlet is connected with the mixed oil/tar heat exchanger 3 heat medium inlet, and the mixed oil/tar heat exchanger 3 heat medium outlet is connected with the mixed oil groove 7.
And the anthracene oil at the side line of the rectifying tower B10 enters a heat medium inlet of the anthracene oil/tar heat exchanger 11, and a heat medium outlet of the anthracene oil/tar heat exchanger 11 is connected with an anthracene oil tank 12.
The coal tar pitch discharged from the bottom of the rectifying tower B5 is connected with the heat medium inlet of the coal tar pitch/tar pitch heat exchanger 13 through a pump C8, and the heat medium outlet of the coal tar pitch/tar pitch heat exchanger 13 is connected with the coal tar pitch tank 14.
With the above structure, the working principle of the utility model is as follows:
after the raw material tar is subjected to heat exchange by the mixed oil/tar heat exchanger 3, the feeding temperature requirement of the rectifying tower A4 can be met without preheating by a raw material tar steam preheater, the low-pressure steam consumption is reduced, and the energy-saving purpose is achieved.
Meanwhile, mixed oil of naphthalene oil and wash oil is extracted from the top of the rectifying tower B10, the extraction temperature is 255 ℃, a heat source is provided for the rectifying tower A4 and the reboiler 6, a raw material tar heating furnace circulation system is replaced, the fuel consumption is reduced, and the running cost of the device is reduced.
In addition, after the tar is subjected to heat exchange by the anthracene oil/tar heat exchanger 11 and the coal tar pitch/tar heat exchanger 13, the temperature is increased by about 40 ℃, so that the load of the heating furnace 9 is greatly reduced, and the energy conservation and the emission reduction are realized.
The foregoing has shown and described the basic principles, main features and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (4)
1. The utility model provides a novel coal tar processing system, includes feed tank (1), pump A (2), rectifying column A (4), pump B (5), heating furnace (9) and rectifying column B (10), the discharge gate of feed tank (1) is linked together with the feed inlet of pump A (2), the bottom of rectifying column A (4) is connected with reboiler (6), rectifying column A (4) bottom of the tower export is linked together through pipeline and the entry of heating furnace (9), and the export of heating furnace (9) is linked together its characterized in that with the entry of rectifying column B (10): the mixed oil/tar heat exchanger (3) is provided with a waste heat medium channel and a material supply channel, a flowing medium in the waste heat medium channel is in heat exchange with a flowing medium in the material supply channel, a cold medium inlet at one end of the material supply channel is communicated with a discharge port of the pump A (2) through a pipeline, a cold medium outlet at the other end of the material supply channel is communicated with an inlet of the rectifying tower A (4) through a pipeline, a heat medium inlet at one end of the waste heat medium channel is communicated with a heat medium outlet of the reboiler (6) through a pipeline, a heat medium outlet at the other end of the waste heat medium channel is communicated with a mixed oil groove (7) through a pipeline, and a heat medium inlet of the reboiler (6) is communicated with an outlet at the top of the rectifying tower B (10).
2. The novel coal tar processing system according to claim 1, further comprising an anthracene oil/tar heat exchanger (11), wherein the middle outlet of the rectifying tower B (10) is communicated with the heat medium inlet of the anthracene oil/tar heat exchanger (11) through a pipeline, and the heat medium outlet of the anthracene oil/tar heat exchanger (11) is communicated with the anthracene oil tank (12) through a pipeline.
3. The novel coal tar processing system according to claim 2, further comprising a coal tar pitch/tar pitch heat exchanger (13), wherein the bottom outlet of the rectifying tower B (10) is communicated with the heat medium inlet of the coal tar pitch/tar pitch heat exchanger (13) through a pipeline, and a pump C (8) is installed on the pipeline between the rectifying tower B (10) and the coal tar pitch/tar pitch heat exchanger (13), and the heat medium outlet of the coal tar pitch/tar pitch heat exchanger (13) is communicated with the coal tar pitch tank (14) through a pipeline.
4. The novel coal tar processing system according to claim 3, wherein a cold medium outlet of the anthracene oil/tar heat exchanger (11) is connected with a cold medium inlet of the coal tar/tar heat exchanger (13), a cold medium outlet of the coal tar/tar heat exchanger (13) is connected with an inlet of the heating furnace (9), and the cold medium inlet of the anthracene oil/tar heat exchanger (11) is communicated with the rectifying tower A (4) through the pump B (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322147191.1U CN220413265U (en) | 2023-08-10 | 2023-08-10 | Novel coal tar system of processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322147191.1U CN220413265U (en) | 2023-08-10 | 2023-08-10 | Novel coal tar system of processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220413265U true CN220413265U (en) | 2024-01-30 |
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ID=89652874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322147191.1U Active CN220413265U (en) | 2023-08-10 | 2023-08-10 | Novel coal tar system of processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220413265U (en) |
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2023
- 2023-08-10 CN CN202322147191.1U patent/CN220413265U/en active Active
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