CN215876295U

CN215876295U - System for preparing industrial naphthalene by using coal tar as raw material

Info

Publication number: CN215876295U
Application number: CN202121395831.5U
Authority: CN
Inventors: 付进; 高学频; 孙宝平; 谢玉林; 张小宝; 徐孝廉
Original assignee: Masteel Oseia Chemical Co ltd
Current assignee: Masteel Oseia Chemical Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-02-22
Anticipated expiration: 2031-06-23

Abstract

The utility model relates to the technical field of industrial naphthalene preparation, and discloses a system for preparing industrial naphthalene by using coal tar as a raw material, which comprises a tower body and a raw material storage tank, wherein two clapboards are fixedly arranged on the upper side inside the tower body, two baffle plates are arranged between the two clapboards, the tower body is divided into two condensation chambers and a working chamber through the two clapboards and the two baffle plates, condensers are fixedly connected to the left end and the right end of the rear outer side wall of the tower body, condensation pipe groups are fixedly connected to the output ends of the two condensers, the two condensation pipe groups respectively penetrate through the two condensation chambers, exhaust pipes and air inlet pipes are respectively and fixedly connected to the upper side wall and the lower side wall of the two condensation chambers, and first control valves are respectively arranged inside the two air inlet pipes and the two exhaust pipes. According to the utility model, through the alternate use of the two condensers, a better condensation effect can be maintained for a long time, the waste of industrial naphthalene is reduced, meanwhile, the waste of heat energy can be reduced, and the preheating efficiency of subsequent raw materials is improved.

Description

System for preparing industrial naphthalene by using coal tar as raw material

Technical Field

The utility model relates to the technical field of industrial naphthalene preparation, in particular to a system for preparing industrial naphthalene by using coal tar as a raw material.

Background

The industrial naphthalene is a white or reddish or yellowish flaky crystal, has special odor, is volatile and sublimes, has the maximum allowable concentration of 10ppm in air, specific gravity of 1.162, boiling point of 217.9, flash point of 78.89 and spontaneous combustion point of 526, belongs to a second-grade flammable solid, and is prepared from coal tar commonly used in industry.

At present, coal tar is generally used for preparing industrial naphthalene, coal tar is firstly dehydrated and then distilled to obtain mixed fraction, phenols are taken out through alkaline washing, then triple-mixed distillation is carried out to obtain industrial naphthalene, naphthalene steam on the top of a distillation tower is condensed through a condenser and liquefied into liquid naphthalene in the actual using process, but the crystallization phenomenon of the surface part of a condenser pipeline exists, so that the subsequent condensation effect is more and more poor, and more raw materials are wasted, therefore, the system for preparing the industrial naphthalene by taking the coal tar as the raw material is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that in the prior art, naphthalene vapor at the top of a distillation tower is condensed by a condenser and liquefied into liquid naphthalene, but the crystallization phenomenon of the surface of a pipeline of the condenser exists, so that the subsequent condensation effect is poorer and poorer, and more raw materials are wasted, and provides a system for preparing industrial naphthalene by using coal tar as a raw material.

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

a system for preparing industrial naphthalene by using coal tar as a raw material comprises a tower body and a raw material storage tank, wherein two partition plates are fixedly arranged at the upper side inside the tower body, two baffle plates are arranged between the two partition plates, the tower body is divided into two condensation cavities and a working cavity by two clapboards and two baffle plates, the left end and the right end of the rear outer side wall of the tower body are fixedly connected with condensers, the output ends of the two condensers are fixedly connected with a condensation pipe group, and the two condensation pipe groups are respectively arranged by penetrating through the two condensation cavities, the upper and lower side walls of the two condensation cavities are respectively fixedly connected with an exhaust pipe and an air inlet pipe, and the inside of two intake pipes and two blast pipes all is equipped with first control valve, two the equal fixedly connected with back flow of lateral wall lower extreme of the opposite one side in condensation chamber, two the inside of back flow all is equipped with the second control valve, the tower body is connected with preheating mechanism and is connected with the raw materials holding vessel through preheating mechanism.

Preferably, the raw materials storage tank's right side wall lower extreme fixedly connected with feedstock pump, feedstock pump's suction end and raw materials storage tank are linked together the setting, feedstock pump's output fixedly connected with conveying pipeline, raw materials storage tank's left side wall upper end fixedly connected with inlet pipe.

Preferably, the upper end of raw materials holding vessel rotates and is connected with the puddler, the pole wall of puddler is fixed to be cup jointed a plurality of evenly distributed's stirring leaf, the upper end fixedly connected with agitator motor of raw materials holding vessel, agitator motor's output and puddler are connected.

Preferably, the left side and the right side of the upper end of the two air inlet pipes are fixedly connected with supporting rods, and the upper ends of the supporting rods are fixedly connected with liquid blocking blocks together at the same side.

Preferably, the upper inner side wall of the raw material storage tank is fixedly connected with an annular flushing pipe, the lower end of the pipe wall of the annular flushing pipe is fixedly connected with a plurality of flushing nozzles, the upper end of the annular flushing pipe is fixedly connected with a liquid inlet pipe, and the liquid inlet pipe penetrates through the upper end of the raw material storage tank.

Preferably, a liquid level sensor is fixedly inserted at the lower end of the left side wall of the raw material storage tank.

Preferably, preheat the mechanism and include a plurality of annular heat exchange tubes and defeated tuber pipe, two the equal fixedly connected with outlet duct in the end of giving vent to anger of condenser, two the upper end of outlet duct is common and the fixed intercommunication setting of the pipe wall of defeated tuber pipe, the jar wall left and right sides of raw materials holding vessel all is fixed to be pegged graft and is had a plurality of connecting pipes, homonymy two connecting pipe one end in opposite directions respectively with the fixed intercommunication setting in the pipe wall left and right sides of homonymy annular heat exchange tube, the one end that the tower body was kept away from to the pipe wall of defeated tuber pipe and the fixed intercommunication setting of the right-hand member of a plurality of connecting pipes of homonymy.

Preferably, the inside of working chamber is fixed and is equipped with hot-blast air-blower, the equal fixedly connected with breather pipe in upper and lower both ends of the left and right sides lateral wall of working chamber, four the inside of breather pipe all is equipped with the third control valve.

Compared with the prior art, the utility model provides a system for preparing industrial naphthalene by taking coal tar as a raw material, which has the following beneficial effects:

1. this use coal tar to prepare system of industry naphthalene as raw materials, tower body through being equipped with, distillation usefulness when can regard as industry naphthalene preparation, through the raw materials holding vessel that is equipped with, can store the coal tar raw materials of treating, through two baffles that are equipped with, two baffles, two condensers, two condensation nest of tubes, two blast pipes, mutually supporting of two intake pipe and two back flows, when using, can be through the alternative use of two condensers, give the time of clearing up condensation nest of tubes surface crystallization, make the condenser maintain better condensation effect for a long time, reduce the waste of industry naphthalene.

2. This use coal tar to prepare system of industry naphthalene as raw materials, through the feedstock pump and the conveying pipeline that are equipped with, can take the raw materials in the raw materials storage tank out, through annular flushing pipe, a plurality of washing terminals and the feed liquor pipe that is equipped with, can be convenient for people regularly wash the raw materials storage tank, through the preheating mechanism that is equipped with, can the absorptive heat of make full use of condenser during operation preheat the raw materials, reduce the heat energy waste, improve follow-up raw materials and preheat efficiency.

The parts which are not involved in the device are the same as or can be realized by adopting the prior art, and the utility model can maintain better condensation effect for a long time by alternately using the two condensers, reduce the waste of industrial naphthalene, reduce the waste of heat energy and improve the preheating efficiency of subsequent raw materials.

Drawings

FIG. 1 is a schematic structural diagram of a system for producing industrial naphthalene from coal tar according to the present invention;

FIG. 2 is an enlarged view of the portion A in FIG. 1;

FIG. 3 is a schematic view of a partial rear view of the structure of FIG. 1;

fig. 4 is a schematic top view of the annular heat exchange tube in fig. 1.

In the figure: the device comprises a tower body 1, a raw material storage tank 2, a partition plate 3, a baffle plate 4, a condenser 5, a condenser pipe 6, an exhaust pipe 7, an air inlet pipe 8, a return pipe 9, a raw material pump 10, a material conveying pipe 11, a material feeding pipe 12, a stirring blade 13, a stirring motor 14, a liquid blocking block 15, an annular flushing pipe 16, a flushing nozzle 17, a liquid inlet pipe 18, a liquid level sensor 19, an annular heat exchange pipe 20, an air conveying pipe 21, an air outlet pipe 22, a connecting pipe 23, a hot air blower 24 and a vent pipe 25.

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.

Embodiment 1 referring to fig. 1, a system for preparing industrial naphthalene by using coal tar as a raw material comprises a tower body 1 and a raw material storage tank 2, two clapboards 3 are fixedly arranged on the upper side inside the tower body 1, two baffle plates 4 are arranged between the two clapboards 3, the tower body 1 is divided into two condensation chambers and a working chamber by the two clapboards 3 and the two baffle plates 4, condensers 5 are fixedly connected to the left and right ends of the rear outer side wall of the tower body 1, the output ends of the condensers 5 are fixedly connected with condensation tube sets 6, the two condensation tube sets 6 are respectively arranged by penetrating through the two condensation chambers, the upper and lower side walls of the two condensation chambers are respectively fixedly connected with exhaust tubes 7 and intake tubes 8, first control valves are arranged inside the two intake tubes 8 and the two exhaust tubes 7, return tubes 9 are fixedly connected to the lower ends of the side walls on the opposite sides of the two condensation chambers, second control valves are arranged inside the two return tubes 9, the tower body 1 is connected with a preheating mechanism and is connected with the raw material storage tank 2 through the preheating mechanism, and other components in the industrial naphthalene preparation system are all in the prior art and are not described in detail;

the lower end of the right side wall of the raw material storage tank 2 is fixedly connected with a raw material pump 10, the suction end of the raw material pump 10 is communicated with the raw material storage tank 2, the output end of the raw material pump 10 is fixedly connected with a material conveying pipe 11, and the upper end of the left side wall of the raw material storage tank 2 is fixedly connected with a material feeding pipe 12, so that raw materials can be conveniently pumped out;

the upper end of the raw material storage tank 2 is rotatably connected with a stirring rod, the rod wall of the stirring rod is fixedly sleeved with a plurality of uniformly distributed stirring blades 13, the upper end of the raw material storage tank 2 is fixedly connected with a stirring motor 14, and the output end of the stirring motor 14 is connected with the stirring rod, so that the raw material can be continuously stirred, and the raw material can be prevented from being deposited and layered;

the left side and the right side of the upper ends of the two air inlet pipes 8 are fixedly connected with supporting rods, and the upper ends of the two supporting rods on the same side are fixedly connected with a liquid blocking block 15 together, so that liquid generated during condensation can be prevented from flowing back into the air inlet pipes 8;

in embodiment 2, as shown in fig. 1-2, an annular flushing pipe 16 is fixedly connected to an upper inner side wall of the raw material storage tank 2, a plurality of flushing nozzles 17 are fixedly connected to a lower end of a pipe wall of the annular flushing pipe 16, a liquid inlet pipe 18 is fixedly connected to an upper end of the annular flushing pipe 16, and the liquid inlet pipe 18 penetrates through an upper end of the raw material storage tank 2, so that people can conveniently flush the interior of the raw material storage tank 2;

the lower end of the left side wall of the raw material storage tank 2 is fixedly inserted with a liquid level sensor 19, so that the liquid level condition in the raw material storage tank 2 can be conveniently checked.

Embodiment 3 as shown in fig. 1 and fig. 3-4, the preheating mechanism includes a plurality of annular heat exchange tubes 20 and air delivery tubes 21, air outlet ends of two condensers 5 are both fixedly connected with air outlet tubes 22, upper ends of the two air outlet tubes 22 are both fixedly communicated with tube walls of the air delivery tubes 21, a plurality of connecting tubes 23 are fixedly inserted into left and right sides of a wall of the raw material storage tank 2, opposite ends of the two connecting tubes 23 on the same side are respectively fixedly communicated with left and right sides of a tube wall of the annular heat exchange tube 20 on the same side, one end of the tube wall of the air delivery tube 21 far away from the tower body 1 is fixedly communicated with right ends of the plurality of connecting tubes 23 on the same side, heat absorbed by the two condensers 5 during operation is discharged through the two air outlet tubes 22, and the two air delivery tubes 21 and the plurality of connecting tubes 23 are delivered into the plurality of annular heat exchange tubes 20, at this time, the annular heat exchange tubes 20 can preheat the raw material, the heat energy consumption is reduced, the subsequent raw material heating efficiency is improved, and the plurality of annular heat exchange tubes 20 and the plurality of connecting tubes 23 are arranged in a staggered manner with the stirring blades 13, so that the rotation of the plurality of stirring blades 13 is prevented from being influenced;

embodiment 4 as shown in fig. 1, a hot air blower 24 is fixedly arranged inside the working chamber, vent pipes 25 are fixedly connected to the upper and lower ends of the left and right side walls of the working chamber, and third control valves are arranged inside the four vent pipes 25, so that the crystallized raw materials can be liquefied and separated by heating the hot air blower 24, and the convenience of cleaning the condenser pipe group 6 is improved.

When the condensing tower is used, steam in the tower body 1 enters the condensing cavity at the corresponding position through the air inlet pipe 8, the gas can be condensed through the condenser 5 at the corresponding position, crystals on the other condensing pipe group 6 can be cleaned when the condensing tower is used, the first control valve at the corresponding position is closed and the two first control valves at the other side are opened after one end of use, at the moment, the condenser 5 at the corresponding side can be started to carry out condensing work, so that the two condensers 5 can be alternately used, and a good condensing effect can be maintained for a long time.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The system for preparing industrial naphthalene by using coal tar as a raw material comprises a tower body (1) and a raw material storage tank (2), and is characterized in that two partition plates (3) are fixedly arranged on the upper side of the interior of the tower body (1), two baffle plates (4) are arranged between the partition plates (3), the tower body (1) is divided into two condensation chambers and one working chamber through the two partition plates (3) and the two baffle plates (4), condensers (5) are fixedly connected to the left end and the right end of the rear outer side wall of the tower body (1), the output ends of the condensers (5) are fixedly connected with condensation pipe sets (6), the two condensation pipe sets (6) respectively penetrate through the two condensation chambers, the upper side wall and the lower side wall of the two condensation chambers are respectively and fixedly connected with exhaust pipes (7) and air inlet pipes (8), and first control valves are arranged in the two air inlet pipes (8) and the two exhaust pipes (7), two equal fixedly connected with back flow (9) of lateral wall lower extreme on the opposite side of condensation chamber, two the inside of back flow (9) all is equipped with the second control valve, tower body (1) is connected with preheating mechanism and is connected with raw materials holding vessel (2) through preheating mechanism.

2. The system for preparing industrial naphthalene by using coal tar as a raw material according to claim 1, wherein a raw material pump (10) is fixedly connected to the lower end of the right side wall of the raw material storage tank (2), the suction end of the raw material pump (10) is communicated with the raw material storage tank (2), the output end of the raw material pump (10) is fixedly connected with a material conveying pipe (11), and the upper end of the left side wall of the raw material storage tank (2) is fixedly connected with a feeding pipe (12).

3. The system for preparing industrial naphthalene by using coal tar as a raw material according to claim 1, wherein a stirring rod is rotatably connected to the upper end of the raw material storage tank (2), a plurality of uniformly distributed stirring blades (13) are fixedly sleeved on the rod wall of the stirring rod, a stirring motor (14) is fixedly connected to the upper end of the raw material storage tank (2), and the output end of the stirring motor (14) is connected with the stirring rod.

4. The system for preparing industrial naphthalene by using coal tar as a raw material according to claim 1, wherein the left side and the right side of the upper ends of the two air inlet pipes (8) are fixedly connected with supporting rods, and the upper ends of the two supporting rods on the same side are fixedly connected with a liquid blocking block (15) together.

5. The system for preparing industrial naphthalene by using coal tar as a raw material according to claim 1, wherein an annular flushing pipe (16) is fixedly connected to the upper inner side wall of the raw material storage tank (2), a plurality of flushing nozzles (17) are fixedly connected to the lower end of the pipe wall of the annular flushing pipe (16), a liquid inlet pipe (18) is fixedly connected to the upper end of the annular flushing pipe (16), and the liquid inlet pipe (18) penetrates through the upper end of the raw material storage tank (2).

6. The system for preparing industrial naphthalene by using coal tar as a raw material according to claim 1, wherein a liquid level sensor (19) is fixedly inserted at the lower end of the left side wall of the raw material storage tank (2).

7. The system for preparing industrial naphthalene by using coal tar as a raw material according to claim 1, wherein the preheating mechanism comprises a plurality of annular heat exchange tubes (20) and an air delivery tube (21), air outlet ends of two condensers (5) are fixedly connected with air outlet tubes (22), the upper ends of the two air outlet tubes (22) are jointly and fixedly communicated with the tube wall of the air delivery tube (21), the left side and the right side of the wall of the raw material storage tank (2) are fixedly inserted with a plurality of connecting tubes (23), opposite ends of the two connecting tubes (23) on the same side are respectively and fixedly communicated with the left side and the right side of the tube wall of the annular heat exchange tubes (20) on the same side, and the end of the tube wall of the air delivery tube (21) far away from the tower body (1) is fixedly communicated with the right end of the plurality of connecting tubes (23) on the same side.

8. The system for preparing industrial naphthalene by using coal tar as a raw material according to claim 1, wherein a hot air blower (24) is fixedly arranged inside the working chamber, vent pipes (25) are fixedly connected to the upper end and the lower end of the left side wall and the right side wall of the working chamber, and a third control valve is arranged inside each of the four vent pipes (25).