CN210449160U

CN210449160U - Reaction system for chloranil

Info

Publication number: CN210449160U
Application number: CN201921131541.2U
Authority: CN
Inventors: 曹亮
Original assignee: Zhijiang Liyuan Chemical Co Ltd
Current assignee: Zhijiang Liyuan Chemical Co Ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-05-05
Anticipated expiration: 2029-07-18

Abstract

The utility model provides a reaction system for tetrachlorobenzoquinone, including reation kettle, reation kettle is equipped with intake pipe, tail gas pipe, charge door and bin outlet, is equipped with the (mixing) shaft in the reation kettle, and the (mixing) shaft passes through the agitator motor drive at reation kettle top, is equipped with stirring vane on the (mixing) shaft, reation kettle quantity is two at least, and the tail gas pipe is connected with the buffer tank, and the buffer tank is equipped with the gas outlet, and the gas outlet is equipped with the valve, and reation kettle still is equipped with the blast pipe, and reation kettle passes through the blast pipe and communicates with one of them other reation kettle, and the reation kettle outside is equipped with heating coil, is. The system can improve the utilization rate of raw materials and reduce energy consumption.

Description

Reaction system for chloranil

Technical Field

The utility model belongs to chloranil production facility field, in particular to a reaction system for chloranil.

Background

Chloranil, yellow powder, melting point of 294 ℃, is used for medical intermediates, permanent violet and other pigments, and is partially used for export. Chloranil is generally prepared by dissolving hydroquinone, glacial acetic acid and hydrochloric acid and then introducing chlorine for chlorination reaction, and the produced material is subjected to suction filtration, water washing and drying to obtain a finished product.

The existing tetrachlorobenzoquinone production system generally directly conveys the reacted tail gas to a tail gas treatment system, the tail gas treatment system and the production system are required to be synchronously carried out, the emission of the tail gas is relatively less, the starting time of the tail gas treatment system is longer, and the energy waste is caused. The tail gas contains part of completely reacted chlorine and is directly discharged into a tail gas treatment system, so that waste of reaction raw materials is caused.

Disclosure of Invention

The utility model aims to solve the technical problem that a reaction system for chloranil is provided, improve the utilization ratio of raw materials, reduce energy consumption.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a reaction system for tetrachlorobenzoquinone, includes reation kettle, and reation kettle is equipped with intake pipe, tail gas pipe, charge door and bin outlet, is equipped with the (mixing) shaft in the reation kettle, and the (mixing) shaft passes through the agitator motor drive at reation kettle top, is equipped with stirring vane on the (mixing) shaft, reation kettle quantity is two at least, and the tail gas pipe is connected with the buffer tank, and the buffer tank is equipped with the gas outlet, and the gas outlet is equipped with the valve, and reation kettle still is equipped with the blast pipe, and reation kettle passes through the blast pipe and communicates with one of them other reation kettle, and the reation kettle outside is equipped.

In the preferred scheme, the number of the reaction kettles is three, the reaction kettles are respectively a first reaction kettle, a second reaction kettle and a third reaction kettle, an exhaust pipe of the first reaction kettle is communicated with the second reaction kettle, an exhaust pipe of the second reaction kettle is communicated with the third reaction kettle, an exhaust pipe of the third reaction kettle is communicated with the first reaction kettle, and an exhaust valve is arranged on the exhaust pipe.

In the preferred scheme, the number of the stirring blades is two, the stirring blades are arranged along the length of the stirring shaft, and the deflection angles of the two layers of the stirring blades are opposite.

In a preferred scheme, a plurality of material penetrating holes are formed in the stirring blade.

In the preferred scheme, the lower end of the stirring shaft is provided with a scraper which is tightly attached to the bottom of the reaction kettle.

In the preferred scheme, a cleaning opening is formed in the buffer tank, and a sealing cover is arranged on the cleaning opening.

The utility model provides a pair of a reaction system for tetrachlorobenzoquinone goes on in turn through setting up several reation kettle, and the chlorine that does not react completely in the tail gas that one of them reation kettle produced gets into another reation kettle and reacts, improves the utilization ratio of raw materials, and exhaust tail gas is stored in the buffer tank, realizes the centralized processing of tail gas.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the preferred overall structure of the present invention;

in the figure: reaction kettle 1, air inlet pipe 2, tail gas pipe 3, discharge gate 4, (mixing) shaft 5, agitator motor 6, stirring vane 7, buffer tank 8, valve 9, blast pipe 10, heating coil 11, discharge valve 12, scraper 13, charge door 14, first reaction kettle 101, second reaction kettle 102, third reaction kettle 103, material passing hole 701, gas outlet 801, cleaning opening 802.

Detailed Description

Example 1: as shown in figure 1, a reaction system for chloranil, comprising a reaction kettle 1, wherein the reaction kettle 1 is provided with an air inlet pipe 2, a tail gas pipe 3, a charging opening 14 and a discharging opening 4, the air inlet pipe 2 and the tail gas pipe 3 are respectively provided with a valve, the charging opening 14 is provided with a sealing cover, the discharging opening 4 is provided with a discharging valve, the air inlet pipe 2 is connected with a chlorine storage tank, the reaction kettle 1 is internally provided with a stirring shaft 5, the stirring shaft 5 is driven by a stirring motor 6 at the top of the reaction kettle 1, the stirring shaft 5 is provided with stirring blades 7, the reaction kettle 1 is provided with two, the tail gas pipe 3 is connected with a buffer tank 8, the buffer tank 8 is provided with a pressure gauge, the buffer tank 8 is provided with an air outlet 801, the air outlet 801 is provided with a valve 9, the air outlet 801 is connected with the tail gas treatment system through a pipeline, the reaction kettle 1 is also provided, heating medium is arranged in the heating coil 11, in this embodiment, the heating medium is steam, and the steam generated by the steam generation is conveyed in the heating coil 11 to heat the reaction kettle 1.

When the device is used, hydroquinone, glacial acetic acid and hydrochloric acid are added into the reaction kettle from the feeding port 14 according to the proportion, and the stirring motor 6 is started to stir and dissolve the materials; after the preparation is finished, supplying steam to the heating coil 11 to heat the material; opening a valve on an air inlet pipe 2 on one of the reaction kettles 1, closing a valve on a tail gas pipe 3 on the reaction kettle 1, introducing chlorine, starting a stirring motor 6, and starting reaction; opening a valve on an exhaust pipe 10, conveying tail gas generated by reaction to another reaction kettle 1 for reaction, opening a valve on a tail gas pipe 3 of the reaction kettle 1, and conveying the tail gas generated by reaction to a buffer tank 8 for storage; after the reaction of the reaction kettle 1 filled with chlorine is finished, closing a valve on an air inlet pipe 2 of the reaction kettle 1, discharging materials, and preparing raw materials again; and opening a valve on the air inlet pipe 2 on the other reaction kettle 1, simultaneously opening a valve on the exhaust pipe 10, and allowing the tail gas which is not completely reacted in the reaction kettle 1 to enter the other reaction kettle 1 for reutilization.

When the system is used for reaction production, the two reaction kettles 1 are arranged to be alternately used, and the chlorine which is not completely reacted in the tail gas generated by one reaction kettle 1 enters the other reaction kettle to react, so that the utilization rate of raw materials is improved; the exhausted tail gas is stored in the buffer tank 8, so that the centralized treatment of the tail gas is realized.

Preferably, the number of the stirring blades 7 is two layers, alternatively or more than two layers of stirring blades 7 are also selected, the two layers of stirring blades are arranged along the length of the stirring shaft 5, and the deflection angles of the two layers of stirring blades 7 are opposite.

Through setting up two-layer or multilayer stirring vane 7, make the deflection angle of stirring vane 7 between the layer opposite simultaneously, can make the raw materials surge from top to bottom, improve the mixture degree of consistency, the reaction is abundant.

Preferably, a plurality of material penetrating holes 701 are formed in the stirring blade 7. On the one hand, the self weight of the stirring blade 7 is reduced, and on the other hand, the running resistance of the stirring blade 7 can be reduced.

Preferably, the lower end of the stirring shaft 5 is provided with a scraper 13, and the scraper 13 is tightly attached to the bottom of the reaction kettle 1. Through setting up scraper blade 13, can strike off the material of adhesion on 1 diapire of reation kettle, improve the mixture degree of consistency, be favorable to arranging the material simultaneously.

Preferably, the buffer tank 8 is provided with a cleaning port 801, and the cleaning port 801 is provided with a sealing cover.

When the washing device is used, water is injected into the buffer tank 8 through the washing port 801, the buffer tank 8 can be washed, and the water after washing is discharged from the air outlet 801.

Example 2: different from the example 1, as shown in fig. 2, the number of the reaction vessels 1 is three, and the reaction vessels are respectively a first reaction vessel 101, a second reaction vessel 102 and a third reaction vessel 103, wherein an exhaust pipe 10 of the first reaction vessel 101 is communicated with the second reaction vessel 102, an exhaust pipe 10 of the second reaction vessel 102 is communicated with the third reaction vessel 103, an exhaust pipe 10 of the third reaction vessel 103 is communicated with the first reaction vessel 101, and an exhaust valve 12 is arranged on the exhaust pipe 10.

When the first reaction kettle 101 is used for reaction, the incompletely reacted tail gas is discharged into the second reaction kettle 102 for reutilization, after the first reaction kettle 101 finishes the reaction, chlorine is introduced into the second reaction kettle 102 for reaction, the generated tail gas is conveyed into the third reaction kettle 103 for continuous reaction, and simultaneously the first reaction kettle 101 is discharged and materials are dissolved; after the second reaction kettle 102 finishes the reaction, chlorine gas is introduced into the third reaction kettle 103 for reaction, the generated tail gas is conveyed into the first reaction kettle 101 for continuous reaction, and meanwhile, the second reaction kettle 102 is discharged and melted. Three reaction kettles are alternately operated, so that uninterrupted production is realized, and the production efficiency is improved.

Claims

1. The utility model provides a reaction system for chloranil, includes reation kettle (1), and reation kettle (1) is equipped with intake pipe (2), tail-gas duct (3), charge door (14) and bin outlet (4), is equipped with (mixing) shaft (5) in reation kettle (1), and (mixing) shaft (5) are equipped with stirring vane (7), its characterized in that through agitator motor (6) drive at reation kettle (1) top on (mixing) shaft (5): the number of the reaction kettles (1) is at least two, the tail gas pipe (3) is connected with the buffer tank (8), the buffer tank (8) is provided with a gas outlet (801), the gas outlet (801) is provided with a valve (9), the reaction kettle (1) is further provided with an exhaust pipe (10), the reaction kettle (1) is communicated with the other reaction kettle (1) through the exhaust pipe (10), the outer side of the reaction kettle (1) is provided with a heating coil (11), and a heating medium is arranged in the heating coil (11).

2. The reaction system for chloranil according to claim 1, wherein: the number of the reaction kettles (1) is three, the reaction kettles are respectively a first reaction kettle (101), a second reaction kettle (102) and a third reaction kettle (103), an exhaust pipe (10) of the first reaction kettle (101) is communicated with the second reaction kettle (102), an exhaust pipe (10) of the second reaction kettle (102) is communicated with the third reaction kettle (103), an exhaust pipe (10) of the third reaction kettle (103) is communicated with the first reaction kettle (101), and an exhaust valve (12) is arranged on the exhaust pipe (10).

3. The reaction system for chloranil according to claim 1, wherein: the number of the stirring blades (7) is two layers, the stirring blades are arranged along the length of the stirring shaft (5), and the deflection angles of the two layers of the stirring blades (7) are opposite.

4. The reaction system for chloranil according to claim 1, wherein: and a plurality of material penetrating holes (701) are formed in the stirring blade (7).

5. The reaction system for chloranil according to claim 1, wherein: the lower end of the stirring shaft (5) is provided with a scraper (13), and the scraper (13) is tightly attached to the bottom of the reaction kettle (1).

6. The reaction system for chloranil according to claim 1, wherein: a cleaning opening (802) is formed in the buffer tank (8), and a sealing cover is arranged on the cleaning opening (802).