CN210176752U

CN210176752U - Four processing apparatus of carbon after etherification and washing

Info

Publication number: CN210176752U
Application number: CN201920812512.6U
Authority: CN
Inventors: Xiangping Li; 李湘平; Shubing Ding; 丁书兵; Bo'en Xia; 夏伯恩; Jun Yi; 仪军; Congcong Jin; 靳聪聪; Nan Hu; 胡楠; Zhentao Li; 李振涛
Original assignee: Shandong Dongming Petrolem & Chemical Group Co Ltd
Current assignee: Shandong Dongming Petrolem & Chemical Group Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-03-24
Anticipated expiration: 2029-05-31

Abstract

The utility model belongs to the technical field of the chemical industry, concretely relates to four processing apparatus of carbon after etherification water washing, including four water scrubber of carbon, take off the dimethyl ether tower, dehydration deoxidation unit, four head tank of carbon, torch device and methyl alcohol recovery tower, four water scrubber of carbon pass through the pipeline with taking off the dimethyl ether tower respectively, four head tank of carbon, torch device and methyl alcohol recovery tower, take off the dimethyl ether tower respectively with dehydration deoxidation unit, four head tank of carbon and torch device pass through the pipeline connection. The device can directly send the four carbon products washed after the ether to the four carbon raw material tanks to control butane components, thereby reducing the butane content in the system, improving the butene content, saving energy and improving the yield.

Description

Four processing apparatus of carbon after etherification and washing

Technical Field

The utility model belongs to the technical field of the chemical industry, concretely relates to carbon four processing apparatus after etherification and washing.

Background

And the carbon C after etherification is a byproduct of an MTBE device of a refinery, and mainly comprises butene-1, normal butane, isobutane, cis-trans-butene-2 and the like. In recent years, with the development of fuel gas deep processing technology, the etherified carbon four is gradually changed into a chemical raw material from a traditional gas fuel, and products such as aromatized gasoline, alkylated gasoline, sec-butyl acetate, butanone and the like are produced. The n-butene isomerization technology mainly converts n-butene components in the etherified C-C raw materials into isobutene through a skeletal isomerization process, provides raw materials for subsequent etherification units, and produces low-sulfur MTBE products. However, with the cyclic reaction, n-butene in the etherified C-C raw material is converted into isobutene to be removed from the structure, and butane components cannot be consumed, so that the content is higher and higher, the production efficiency is reduced, the energy consumption is wasted, and the butane replacement efficiency is reduced.

Disclosure of Invention

For solving the problem that the butane has low replacement efficiency and high energy consumption in the prior art, the utility model aims to provide a four-treatment device for carbon after etherification and water washing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a four processing apparatus of carbon after etherification and washing, includes four water scrubber of carbon, takes off the dimethyl ether tower, four head tank of carbon, torch device and methyl alcohol recovery tower, four water scrubber of carbon and take off between the dimethyl ether tower through a pipe and No. two union couplings, take off between dimethyl ether tower and the four head tank of carbon through No. six pipe and No. seven union couplings, be connected with No. four pipes between a pipe and No. seven pipe, four water scrubber of carbon and torch device are through a pipe and No. three union coupling, take off dimethyl ether tower and No. three pipe through No. five union couplings, be provided with a water cooler on the pipeline between four water scrubber of carbon and the dimethyl ether tower of taking off, be provided with No. two water coolers between No. six pipes and No. seven pipes.

Further, the lower tower of the carbon four-water washing tower is provided with a feeding pipe and a pump.

Furthermore, the inlet end of the first water cooler is connected with a first pipe, and the outlet end of the first water cooler is connected with a second pipe and a third pipe; and the inlet end of the second water cooler is connected with the sixth pipe, and the outlet end of the second water cooler is connected with the eighth pipe and the seventh pipe.

Further, the tower cauldron of four water scrubber on carbon passes through nine tubs of union coupling methyl alcohol recovery tower, the tower cauldron of methyl alcohol recovery tower passes through ten tubs of union coupling four water scrubber on carbon, the intersection of nine tubs and ten tubs is provided with the heat exchanger.

Furthermore, the first pipe, the second pipe, the third pipe, the fifth pipe, the sixth pipe, the seventh pipe, the eighth pipe, the ninth pipe and the tenth pipe are all provided with pumps.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses set up the methyl alcohol recovery tower after four water wash towers in carbon, the removal of methyl alcohol is carried out in four water wash towers in carbon through the carbon after the etherification four, and the mixed solution of methyl alcohol and water after the removal flows in the methyl alcohol recovery tower through the tower cauldron and carries out the recovery of methyl alcohol, and remaining water is carried out cyclic utilization by the tower bottom of methyl alcohol recovery tower through heat exchanger and pump entering four water wash towers in carbon again, has realized the circulation of the energy, practices thrift the environmental protection.

The utility model discloses a set up No. four pipes between a pipe and No. seven pipes, will shunt the material behind the four washing towers of carbon, partly directly get into four head tank of carbon and control butane component wherein, reduce butane and follow four units that continue to get into behind the ether and take off dimethyl ether tower and after and carry out the systemic circulation, reduced the energy loss, also adjusted butane's replacement efficiency, improved the product yield.

Drawings

FIG. 1 is a schematic structural diagram of a post-ether carbon four-treatment device

The reference numbers in the drawings: the device comprises a carbon four-water washing tower 1, a dimethyl ether removing tower 2, a dehydration and deoxidation unit 3, a carbon four-raw material tank 4, a torch device 5, a methanol recovery tower 6, a pump 7, a heat exchanger 8, a feed pipe 10, a first pipe 11, a second pipe 12, a third pipe 13, a fourth pipe 14, a fifth pipe 15, a sixth pipe 16, a seventh pipe 17, an eighth pipe 18, a ninth pipe 19, a tenth pipe 20, a first water cooler 21 and a second water cooler 22.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

A four carbon treatment device after etherification and water washing comprises a four carbon washing tower 1, a dimethyl ether removing tower 2, a four carbon raw material tank 4, a torch device 5 and a methanol recovery tower 6, wherein the four carbon washing tower 1 is connected with the dimethyl ether removing tower 2 through a first pipe 11 and a second pipe 12, the dimethyl ether removing tower 2 is connected with the four carbon raw material tank 4 through a sixth pipe 16 and a seventh pipe 17, a fourth pipe 14 is connected between the first pipe 11 and the seventh pipe 17, the four carbon washing tower 1 is connected with the torch device 5 through a first pipe 11 and a third pipe 13, the dimethyl ether removing tower 2 is connected with the third pipe 13 through a fifth pipe 15, a first water cooler 21 is arranged on a pipeline between the four carbon washing tower 1 and the dimethyl ether removing tower 2, and a second water cooler 22 is arranged between the sixth pipe 16 and the seventh pipe 17.

Further, the lower column of the carbon four-water washing column 1 is provided with a feed pipe 10 and a pump 7.

Further, the inlet end of the first water cooler 21 is connected with the first pipe 11, and the outlet end of the first water cooler is connected with the second pipe 12 and the third pipe 13; the inlet end of the second water cooler 22 is connected with the sixth pipe 16, the outlet end of the second water cooler is connected with the eighth pipe 18 and the seventh pipe 17, and the rear end of the eighth pipe 18 is connected with the dehydration and deoxidation unit 3.

Further, the tower cauldron of four water scrubber 1 on carbon passes through No. nine pipe 19 and connects methyl alcohol recovery tower 6, the tower cauldron of methyl alcohol recovery tower 6 passes through ten pipe 20 and connects four water scrubber 1 on carbon, the intersection of No. nine pipe 19 and ten pipe 20 is provided with heat exchanger 8.

Further, the first pipe 11, the second pipe 12, the third pipe 13, the fifth pipe 15, the sixth pipe 16, the seventh pipe 17, the eighth pipe 18, the ninth pipe 19 and the tenth pipe 20 are all provided with a pump 7.

When the device is used, the etherified post-etherification carbon four-way enters the lower part of a carbon four-water washing tower 1 through a feeding pipe 10 and a pump 7 and is in countercurrent contact with water, the post-etherification carbon four-way fraction is divided on a first pipe 11 after the top of the tower is washed with water, one part of the post-etherification carbon four-way fraction flows into a first water cooler 21, and the other part of the post-etherification carbon four-way fraction flows into a fourth pipe 14 and finally enters a seventh pipe 17 to reach a carbon four-raw material tank 4; the material at the bottom of the tower enters the methanol recovery tower 6 through the heat exchanger 8 and the pump 7 on the ninth pipe 19, the material after methanol recovery flows into the tenth pipe 20 from the bottom of the methanol recovery tower 6, and enters the carbon four-water washing tower 1 through the heat exchanger 8 and the pump 7 for cyclic utilization. After washing ether by the water cooler 21, part of the carbon four fraction enters the flare device 5, and the other part of the carbon four fraction enters the dimethyl ether removing tower 2 through the second pipe 12 under the pressure of the pump 7 to remove dimethyl ether by carbon four, and the gas phase at the top of the tower as a byproduct fuel gas is pressurized by the pump 7, flows into the third pipe 13 through the fifth pipe 15 and finally reaches the flare device 5; the tower bottom product of the dimethyl ether removal tower 2 is pressurized by a pump 7 and enters a second water cooler 22 through a sixth pipe 16 for cooling, one part of the cooled carbon four product is pressurized by the pump 7 and is sent to a dehydration and deoxidation unit 3 through an eighth pipe 18 for the next operation, and the other part of the cooled carbon four product is pressurized by the pump 7 and is sent to a carbon four raw material tank 4 through a seventh pipe 17 for butane removal.

The n-butene isomerization technique is a circulation system, and the butene that gets into in the four raw materials of carbon of system originally turns into the isobutene by n-butene through a series of reactions to turn into end product MTBE discharge system, but butane in the four raw materials of carbon can circulate in the system, the utility model discloses a set up No. four pipe 14 between No. 11 and No. seven pipes 17, will shunt the material behind four water scrubber 1 of carbon, partly directly get into four raw material tanks 4 of carbon and carry out the desorption to butane component wherein, reduce butane and follow ether behind the four units that continue to get into and take off dimethyl ether tower 2 and thereafter and carry out systemic circulation, reduced the energy loss, also adjusted butane's replacement efficiency.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the ordinary skilled person in the technical field of the present invention, without departing from the concept of the present application, a plurality of simple deductions or replacements can be made, all of which should be considered as belonging to the protection scope of the present invention.

Claims

1. A four-carbon treatment device after etherification and water washing comprises a four-carbon washing tower (1), a dimethyl ether removing tower (2), a four-carbon raw material tank (4), a torch device (5) and a methanol recovery tower (6), and is characterized in that the four-carbon washing tower (1) and the dimethyl ether removing tower (2) are connected through a first pipe (11) and a second pipe (12), the dimethyl ether removing tower (2) and the four-carbon raw material tank (4) are connected through a sixth pipe (16) and a seventh pipe (17), a fourth pipe (14) is connected between the first pipe (11) and the seventh pipe (17), the four-carbon washing tower (1) and the torch device (5) are connected through the first pipe (11) and the third pipe (13), the dimethyl ether removing tower (2) and the third pipe (13) are connected through a fifth pipe (15), and a first water cooler (21) is arranged on a pipeline between the four-carbon washing tower (1) and the dimethyl ether removing tower (2), and a second water cooler (22) is arranged between the sixth pipe (16) and the seventh pipe (17).

2. The device for treating carbon four after etherification according to claim 1, characterized in that the lower tower of the carbon four-water washing tower (1) is provided with a feed pipe (10) and a pump (7).

3. The device for treating carbon four after etherification and water washing according to claim 1, characterized in that the inlet end of the first water cooler (21) is connected with a first pipe (11), and the outlet end is connected with a second pipe (12) and a third pipe (13); the inlet end of the second water cooler (22) is connected with the sixth pipe (16), and the outlet end of the second water cooler is connected with the eighth pipe (18) and the seventh pipe (17).

4. The device for treating carbon four after etherification and water washing as claimed in claim 1, wherein the kettle of the carbon four water washing tower (1) is connected with the methanol recovery tower (6) through a nine-number pipe (19), the kettle of the methanol recovery tower (6) is connected with the carbon four water washing tower (1) through a ten-number pipe (20), and a heat exchanger (8) is arranged at the intersection of the nine-number pipe (19) and the ten-number pipe (20).

5. The four-carbon treatment device after etherification and water washing according to any one of claims 1 to 4, characterized in that pumps (7) are arranged on the first pipe (11), the second pipe (12), the third pipe (13), the fifth pipe (15), the sixth pipe (16), the seventh pipe (17), the eighth pipe (18), the ninth pipe (19) and the tenth pipe (20).