CN216170055U - Tower top heat taking device of toluene tower of aromatic hydrocarbon combination device - Google Patents
Tower top heat taking device of toluene tower of aromatic hydrocarbon combination device Download PDFInfo
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- CN216170055U CN216170055U CN202122668058.1U CN202122668058U CN216170055U CN 216170055 U CN216170055 U CN 216170055U CN 202122668058 U CN202122668058 U CN 202122668058U CN 216170055 U CN216170055 U CN 216170055U
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Abstract
The utility model provides a tower top heat extraction device of a toluene tower of an aromatic hydrocarbon combination device, which comprises: compared with the prior art, the utility model has the following beneficial effects that: through setting up the heat exchanger, be convenient for walk away the gaseous heat exchange in the high temperature position of surplus part, avoid most high temperature position heat direct loss, be favorable to the device to reduce cost and increase effect, air cooling mechanism is used for reserve, can't cool off the high temperature position gas of surplus part after avoiding the heat exchanger trouble, the design of moisture monitor, ooff valve one and dehydrator for in case the heat exchanger takes place to reveal, avoid carrying in the gaseous entering toluene backward flow jar of water.
Description
Technical Field
The utility model belongs to the field of petrochemical equipment, and particularly relates to a tower top heat taking device of a toluene tower of an aromatic hydrocarbon combination device.
Background
In order to meet the requirement that the separation performance of the toluene tower top and the bottom components is qualified, the toluene tower needs to reach a certain reflux ratio under the pressurization working condition so as to be beneficial to the product quality to reach the standard, according to the original design working condition, on the premise that the gas phase quantity at the toluene tower top meets the heat supply of the benzene tower, 183-DEG C high-temperature-position gas is still abundant, the part of gas is directly cooled through the matching air cooling at the toluene tower top, in the air cooling process link of the gas at the toluene tower top, the air cooling power consumption at the toluene tower top is increased, most of high-temperature-position heat is directly lost, the cost reduction and the efficiency improvement of the device are not facilitated, and therefore, the tower top heat taking device of the toluene tower of the aromatic hydrocarbon combination device is urgently needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a tower top heat-taking device of a toluene tower of an aromatic hydrocarbon combination unit, and solves the problems in the background technology.
The utility model is realized by the following technical scheme: an overhead heat removal unit for a toluene column of an aromatics complex, comprising: the toluene tower is provided with an air outlet at the upper end, the air outlet header is connected with the upper end of the air outlet, the right side of the air outlet header is provided with a pressure gauge, the lower surface of the right side of the air outlet header is provided with a pressure regulating pipe, the air cooling pipe is arranged on the lower surface of the right side of the air outlet header, the air cooling mechanism is arranged at the lower side of the air cooling pipe, a heat medium inlet pipe is arranged at the right side of the air outlet header, the lower end of the heat medium inlet pipe is fixedly connected with the upper end of the left side of the heat exchanger, the right side of the upper end of the heat exchanger is fixedly connected with a refrigerant outlet pipe, the refrigerant inlet pipe is fixedly connected with the right side of the lower end of the heat exchanger, the left side of the lower end of the heat exchanger is fixedly connected with a heat medium outlet pipe, the moisture monitor is arranged on the upper side of the heat medium outlet pipe, and a first switch valve is arranged on the upper side of the heat medium outlet pipe, switch valve one is located moisture monitor downside, and the dehumidifier is installed heat medium exit tube downside, the dehumidifier is located moisture monitor downside, switch valve two is installed to heat medium exit tube downside, moisture monitor passes through signal transmission module and microprocessor signal connection, and the memory is installed in the microprocessor, microprocessor and relay electric connection, relay and switch valve, dehumidifier electric connection, pressure regulating pipe lower extreme, air cooling pipe lower extreme and heat medium exit tube lower extreme all are connected with the inlet pipe upper end, the inlet pipe lower extreme is installed at toluene reflux tank left end upside, and the heating branch pipe sets up toluene reflux tank right-hand member downside, toluene reflux tank left end downside passes through the back flow and is connected with toluene tower upper end right side.
In a preferred embodiment, the heating furnace is connected to the left side of the lower end of the toluene column via a connecting pipe, the bottom end of the toluene column is connected to the bottom pump via a connecting pipe, and the heating furnace is connected to the bottom pump via a connecting pipe.
In a preferred embodiment, a control valve is installed at an upper end of the pressure regulating pipe, a regulating valve is installed at an upper end of the air cooling pipe, and a regulating valve is installed at an upper end of the heat medium inlet pipe.
As a preferred embodiment, the heat medium inlet interface is arranged on the left side of the upper end of the heat exchanger, the right side of the upper end of the heat exchanger is provided with a refrigerant outlet, the heat medium outlet is arranged on the left side of the lower end of the heat exchanger, and the right side of the lower end of the heat exchanger is provided with a refrigerant inlet interface.
In a preferred embodiment, the gas-liquid separator is arranged in the dehumidifier, and a water outlet is arranged at the lower side of the rear end of the dehumidifier.
As a preferred embodiment, the input end of the microprocessor is connected with the output end of the moisture monitor, the output end of the memory is connected with the input end of the microprocessor, the input end of the relay is connected with the output end of the microprocessor, the output end of the relay is connected with the input end of the switch valve, and the input end of the dehumidifier is connected with the output end of the relay.
After the technical scheme is adopted, the utility model has the beneficial effects that: through setting up the heat exchanger, be convenient for walk away the gaseous heat exchange in the high temperature position of surplus part, avoid most high temperature position heat direct loss, be favorable to the device to reduce cost and increase effect, air cooling mechanism is used for reserve, can't cool off the high temperature position gas of surplus part after avoiding the heat exchanger trouble, the design of moisture monitor, ooff valve one and dehydrator for in case the heat exchanger takes place to reveal, avoid carrying in the gaseous entering toluene backward flow jar of water.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of the overall structure of a toluene column overhead heat removal unit of an aromatics complex according to the present invention.
Fig. 2 is an enlarged schematic view of a dehydrator of a tower top heat-taking device of a toluene tower of an aromatic hydrocarbon combination unit.
FIG. 3 is a schematic diagram of the microprocessor connections of the overhead heat removal unit of the toluene column of an aromatics complex of the present invention.
FIG. 4 is a block diagram of a microprocessor control flow for a toluene column overhead heat removal system of an aromatics complex of the present invention.
In the figure, 1-toluene tower, 2-air outlet, 3-air outlet main, 4-pressure gauge, 5-pressure adjusting pipe, 6-air cooling pipe, 7-air cooling mechanism, 8-heat medium inlet pipe, 9-heat exchanger, 10-refrigerant outlet pipe, 11-heat medium outlet pipe, 12-refrigerant inlet pipe, 13-moisture monitor, 14-switch valve I, 15-dehumidifier, 16-toluene reflux tank, 17-heating branch pipe, 18-feeding pipe, 19-reflux pipe, 20-microprocessor, 21-relay, 22-memory, 23-switch valve II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 to 4, the present invention provides a technical solution: an overhead heat removal unit for a toluene column of an aromatics complex, comprising: the toluene tower 1, the air outlet header 3, the air cooling mechanism 7, the heat exchanger 9, the moisture monitor 13, the dehumidifier 15 and the toluene reflux tank 16, the air outlet 2 is arranged at the upper end of the toluene tower 1, the air outlet header 3 is connected with the upper end of the air outlet 2, the pressure gauge 4 is arranged at the right side of the air outlet header 3, the pressure regulating pipe 5 is arranged at the lower surface of the right side of the air outlet header 3, the air cooling pipe 6 is arranged at the lower surface of the right side of the air outlet header 3, the air cooling mechanism 7 is arranged at the lower side of the air cooling pipe 6, the heat medium inlet pipe 8 is arranged at the right side of the air outlet header 3, the lower end of the heat medium inlet pipe 8 is fixedly connected with the upper end of the left side of the heat exchanger 9, the right side of the upper end of the heat exchanger 9 is fixedly connected with the refrigerant outlet pipe 10, the refrigerant inlet pipe 12 is fixedly connected with the right side of the lower end of the heat exchanger 9, the left side of the lower end of the heat medium outlet pipe 11 is fixedly connected with the heat medium outlet pipe 11, the moisture monitor 13 is arranged at the upper side of the heat medium outlet pipe 14, the first switch valve 14 is arranged at the upper side of the heat medium outlet pipe 11, first 14 on-off valves are located moisture monitor 13 downside, 11 downside at heat medium exit tube are installed to dehumidifier 15, dehumidifier 15 is located moisture monitor 13 downside, two 23 on-off valves are installed to 11 downside of heat medium exit tube, moisture monitor 13 passes through signal transmission module and microprocessor 20 signal connection, memory 22 is installed in microprocessor 20, microprocessor 20 and relay 21 electric connection, relay 21 and on-off valves, 15 electric connection of dehumidifier, the 5 lower extremes of pressure regulating pipe, 6 lower extremes of air cooling pipe and the 11 lower extremes of heat medium exit tube all are connected with 18 upper ends of inlet pipe, 16 left end upsides at toluene reflux tank are installed to 18 lower extremes of inlet pipe, heating branch 17 sets up at 16 right-hand members downside of toluene reflux tank, 16 left ends of toluene reflux tank downside passes through back flow 19 and is connected with toluene tower 1 upper end right side.
The heating furnace is connected with the left side of the lower end of the toluene tower 1 through a connecting pipe, the bottom end of the toluene tower 1 is connected with the tower bottom pump through a connecting pipe, and the heating furnace is connected with the tower bottom pump through a connecting pipe and used for heating partial materials at the bottom of the toluene tower 1.
The control valve is installed in pressure regulating pipe 5 upper end, and the governing valve is installed to air cooling pipe 6 upper end, and the governing valve is installed in heat medium admission pipe 8 upper end, and pressure regulating pipe 5 is used for adjusting the pressure differential.
The heat medium inlet interface is arranged on the left side of the upper end of the heat exchanger 9, the refrigerant outlet is formed in the right side of the upper end of the heat exchanger 9, the heat medium outlet is formed in the left side of the lower end of the heat exchanger 9, and the refrigerant inlet interface is formed in the right side of the lower end of the heat exchanger 9 and used for exchanging heat of high-temperature-level gas of the surplus part away, so that direct loss of most high-temperature-level heat is avoided.
The gas-liquid separator is arranged inside the dehumidifier 15, and a water outlet is arranged at the lower side of the rear end of the dehumidifier 15 and used for dehumidifying the gas after heat exchange and preventing the gas from carrying a large amount of water into the toluene reflux tank 16.
The input end of the microprocessor 20 is connected with the output end of the moisture monitor 13, the output end of the memory 22 is connected with the input end of the microprocessor 20, the input end of the relay 21 is connected with the output end of the microprocessor 20, the output end of the relay 21 is connected with the input end of the first switch valve 14, and the input end of the dehumidifier 15 is connected with the output end of the relay 21.
As an embodiment of the present invention: in practical use, the surplus high-temperature-level gas enters the heat exchanger 9 from the gas outlet header pipe 3 to the heat medium inlet pipe 8, the refrigerant heat exchange medium enters the heat exchanger 9 from the refrigerant inlet pipe 12, the refrigerant heat exchange medium flows out from the refrigerant outlet pipe 10 to exchange heat in the surplus high-temperature-level gas, the high-temperature-level gas is cooled, the cooled high-temperature-level gas flows out from the heat medium outlet pipe 11 and passes through the moisture monitor 13, the moisture monitor 13 monitors moisture in the cooled high-temperature-level gas at the moment, the output end of the moisture monitor 13 is connected with the input end of the microprocessor 20, moisture content data are transmitted to the microprocessor 20 through the signal transmission module, a moisture content critical value is input into the microprocessor 20 in advance, the output end of the memory 22 is connected with the input end of the microprocessor 20, and the microprocessor 20 compares the data with the moisture content critical value, when data is greater than the moisture content critical value, then microprocessor 20 output is connected with relay 21 input, and relay 21 output is connected with a 14 input of ooff valve, closes ooff valve 14, and relay 21 output is connected with 15 inputs of dehumidifier, starts dehumidifier 15, dehumidifies, and the staff opens air cooling mechanism 7 afterwards and carries out the air cooling to high temperature position gas, overhauls heat exchanger 9 simultaneously.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. An overhead heat removal unit for a toluene column of an aromatics complex, comprising: the toluene tower is characterized in that an air outlet is formed in the upper end of the toluene tower, the upper end of the air outlet is connected with the air outlet main pipe, a pressure gauge is arranged on the right side of the air outlet main pipe, a pressure adjusting pipe is arranged on the lower surface of the right side of the air outlet main pipe, an air cooling pipe is arranged on the lower surface of the right side of the air outlet main pipe, the air cooling mechanism is mounted on the lower side of the air cooling pipe, a heat medium inlet pipe is arranged on the right side of the air outlet main pipe, the lower end of the heat medium inlet pipe is fixedly connected with the upper end of the left side of the heat exchanger, the right side of the upper end of the heat exchanger is fixedly connected with a refrigerant outlet pipe, the right side of the lower end of the heat exchanger is fixedly connected with a heat medium outlet pipe, the moisture monitor is mounted on the upper side of the heat medium outlet pipe, and a first switch valve is mounted on the upper side of the heat medium outlet pipe, switch valve one is located the moisture monitor downside, the dehumidifier is installed to heat medium exit tube downside, the dehumidifier is located the moisture monitor downside, switch valve two is installed to heat medium exit tube downside, the moisture monitor passes through signal transmission module and microprocessor signal connection, install the memory in the microprocessor, microprocessor and relay electric connection, relay and switch valve, dehumidifier electric connection, pressure regulating pipe lower extreme, air cooling pipe lower extreme and heat medium exit tube lower extreme all are connected with the inlet pipe upper end, the inlet pipe lower extreme is installed at toluene reflux tank left end upside, toluene reflux tank right-hand member downside is equipped with the heating branch pipe, toluene reflux tank left end downside passes through the back flow and is connected with toluene tower upper end right side.
2. The overhead heat removal system of a toluene column of an aromatics complex of claim 1, wherein: the left side of the lower end of the toluene tower is connected with the heating furnace through a connecting pipe, the bottom end of the toluene tower is connected with a tower bottom pump through a connecting pipe, and the tower bottom pump is connected with the heating furnace through a connecting pipe.
3. The overhead heat removal system of a toluene column of an aromatics complex of claim 1, wherein: the pressure regulating pipe is characterized in that a control valve is installed at the upper end of the pressure regulating pipe, a regulating valve is installed at the upper end of the air cooling pipe, and a regulating valve is installed at the upper end of the heating medium inlet pipe.
4. The overhead heat removal system of a toluene column of an aromatics complex of claim 1, wherein: the heat exchanger is characterized in that a heat medium inlet interface is arranged on the left side of the upper end of the heat exchanger, a refrigerant outlet is arranged on the right side of the upper end of the heat exchanger, a heat medium outlet is arranged on the left side of the lower end of the heat exchanger, and a refrigerant inlet interface is arranged on the right side of the lower end of the heat exchanger.
5. The overhead heat removal system of a toluene column of an aromatics complex of claim 1, wherein: the dehumidifier is internally provided with a gas-liquid separator, and the lower side of the rear end of the dehumidifier is provided with a water outlet.
6. The overhead heat removal system of a toluene column of an aromatics complex of claim 1, wherein: the output end of the moisture monitor is connected with the input end of the microprocessor, the output end of the memory is connected with the input end of the microprocessor, the output end of the microprocessor is connected with the input end of the relay, the output end of the relay is connected with the input end of the switch valve, and the output end of the relay is connected with the input end of the dehumidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122668058.1U CN216170055U (en) | 2021-11-03 | 2021-11-03 | Tower top heat taking device of toluene tower of aromatic hydrocarbon combination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122668058.1U CN216170055U (en) | 2021-11-03 | 2021-11-03 | Tower top heat taking device of toluene tower of aromatic hydrocarbon combination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216170055U true CN216170055U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122668058.1U Active CN216170055U (en) | 2021-11-03 | 2021-11-03 | Tower top heat taking device of toluene tower of aromatic hydrocarbon combination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216170055U (en) |
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2021
- 2021-11-03 CN CN202122668058.1U patent/CN216170055U/en active Active
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