CN209934743U

CN209934743U - Tower reaction unit of production parachlorophenol

Info

Publication number: CN209934743U
Application number: CN201822215086.6U
Authority: CN
Inventors: 王华平
Original assignee: Inner Mongolia Yida Chemical Technology Co Ltd
Current assignee: Inner Mongolia Yida Chemical Technology Co Ltd
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2020-01-14
Anticipated expiration: 2028-12-27

Abstract

The utility model relates to a tower reaction unit of production parachlorophenol, including reaction tower, logical chlorine distributor, feed inlet, tail gas mouth, discharge gate, chlorine pipeline and thermometer. A chlorine distributor and a thermometer are arranged in the reaction tower; the chlorine pipeline is respectively connected to the chlorine distributor from the outside of the reaction tower, and the tail gas port is positioned at the top of the reaction tower; the discharge hole is positioned between the chlorine distributor and the tail gas hole; the lower part of the reaction tower is provided with a feed inlet. The utility model improves the content of parachlorophenol in the reaction crude product, reduces the cost of the product, realizes continuous production and improves the production efficiency; no solvent is needed, and solvent loss and recovery procedures are avoided.

Description

Tower reaction unit of production parachlorophenol

Technical Field

The utility model relates to a to chlorophenol production facility technical field, specifically be a tower reaction unit of production parachlorophenol.

Background

As far as the inventor knows, parachlorophenol is an important chemical intermediate and is mainly used in the industries of pesticides, medicines, dyes, plastics and the like. The preparation of p-chlorophenol by a phenol chlorination method is a main method adopted in the industry at present, and the method can be divided into a chlorine method, a sulfuryl chloride method and a copper chloride method according to the difference of chlorination agents. Phenol can be subjected to chlorination reaction with chlorine at a high speed without a catalyst to generate p-chlorophenol, o-chlorophenol and a small amount of m-chlorophenol, and the reaction conditions have great influence on the selectivity of the target product to the chlorophenol. At present, the existing p-chlorophenol industrial device in China mainly adopts a chlorine method process route, the one-way conversion rate of phenol can reach 90% -95%, but the selectivity of p-chlorophenol is not high, and the content of only p-chlorophenol in a reaction crude product is 56% -61%. Therefore, how to improve the selectivity of p-chlorophenol is the key to reduce the product cost.

Found through the retrieval, the patent number is 201721308985.X, the publication number is CN207286737U, the name is "condensing equipment for chlorophenol production"'s chinese utility model patent, including condenser body, seal structure and condenser pipe, the surge chamber is installed respectively with the bottom at the top of condenser body and lower surge chamber, goes up the top of surge chamber and installs the air inlet, is connected with the intake pipe on the air inlet, and seal structure is installed in the outside of air inlet, and seal structure is including installing the sealed cowling at last surge chamber top and the inside ethanol solution who fills of sealed cowling. The sealing structure arranged at the air inlet of the condenser avoids the leakage of the parachlorophenol gas when entering the condenser, and improves the sealing property and the use safety of the condenser; the circulation condensation of the parachlorophenol gas can be realized between the liquid storage device arranged on the condenser and the condenser, so that the parachlorophenol production has continuity and condensation thoroughness. However, the main function of the utility model is condensation.

The device comprises a reaction kettle, a storage tank, a distillation tower, a material receiving tank, a condensing tank, a pressure reducing tower, a separator and a product tank, wherein the Chinese invention patent with the application number of 201610283604.0 and the application publication number of CN105906485A is named as 'a production device of high-purity parachlorophenol and a production process thereof'; the device can produce high-purity parachlorophenol, and the device is equipped with gas flowmeter on leading to the pipeline of chlorine, and the air input that can effectual control gas avoids the deep reaction, is equipped with the temperature measurement mouth at the reactor top, and the temperature of being convenient for detects, prevents the side reaction that too high temperature brought, influences the purity and the quality of product. However, the invention patent uses a reaction kettle, the structure is complex, and the improvement space exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at: aiming at the problems in the prior art, provides a tower type reaction device for producing p-chlorophenol,

in order to achieve the above purpose, the technical scheme of the utility model is as follows:

comprises a reaction tower, a chlorine introducing distributor, a feed inlet, a tail gas port, a discharge port, a chlorine pipeline and a thermometer. The chlorine introducing distributor and the thermometer are positioned inside the reaction tower; the chlorine pipeline is respectively connected to a chlorine distributor from the outside of the reaction tower, and the tail gas port is positioned at the top of the reaction tower; the discharge hole is positioned between the chlorine distributor and the tail gas hole; the lower part of the reaction tower is provided with a feed inlet.

When the device is used, phenol is pumped into the reaction tower from the feeding hole, and chlorine is introduced through the three pipelines. The reaction temperature was monitored by thermometer readings. The obtained crude p-chlorophenol product is collected by a discharge port, and tail gas is discharged from a tail gas port. And obtaining the content of the parachlorophenol after meteorological analysis, wherein the content is 75-85%.

The utility model discloses can also adopt following preferred scheme:

preferably, the chlorine introducing distributors are arranged in the space from the discharge port to the bottom of the tower at equal intervals.

Preferably, the outlet of the chlorine gas conduit leads to a chlorine gas distributor via a branch conduit.

Preferably, the thermometer is located at the location of the distributor for passing chlorine gas.

Preferably, the feed inlet is connected with a feed pump, and the tail gas outlet is connected with a tail gas receiving device.

More preferably, the inlet port pumps phenol at a rate of 5 to 1000 ml/min.

Preferably, the chlorine distributor is a net structure.

Preferably, the reaction tower is internally provided with at least three chlorine gas passing distributors.

Preferably, the chlorine speed in the chlorine pipeline is 50-500 ml/min.

Preferably, the reaction temperature in the chlorine introducing distributor is 0-100 ℃.

After the utility model is adopted, the content of parachlorophenol (75-85%) in the reaction crude product is obviously improved, and the cost of the product is obviously reduced. Continuous production is realized, and the production efficiency is improved; no solvent is needed, and solvent loss and recovery procedures are avoided.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

Examples

As shown in FIG. 1, the tower reactor for producing p-chlorophenol of this embodiment comprises a reaction tower 1, a chlorine distributor 3, a feed inlet 4, an exhaust port 5, a discharge port 6, a chlorine pipeline 2 and a thermometer 7. The chlorine introducing distributor 3 and the thermometer 7 are positioned inside the reaction tower 1; the chlorine introducing pipeline 2 is respectively connected to a chlorine introducing distributor 3 from the outside of the reaction tower 1, and the tail gas port 5 is positioned at the top of the reaction tower 1; the discharge port 6 is positioned between the chlorine distributor 3 and the tail gas port 5; the lower part of the reaction tower 1 is provided with a feed inlet 4.

The chlorine distributors 3 are arranged in the space from the discharge port 6 to the bottom of the tower at equal intervals.

The outlet of the chlorine pipeline 2 leads to a chlorine distributor 3 through a branch pipeline.

The thermometer 7 is located at the location of the distributor 3 for passing chlorine.

The feed inlet 4 is connected with a feed pump, and the tail gas port 5 is connected with a tail gas receiving device.

The feeding port 4 pumps phenol at a speed of 5-1000 ml/min.

The chlorine distributor 3 is a net structure.

The reaction tower 1 is provided with at least three chlorine gas distributors 3.

The chlorine speed in the chlorine pipeline 2 is 50-500 ml/min.

The reaction temperature in the chlorine distributor 3 is 0-100 ℃.

The using process is as follows: phenol is pumped into the reaction tower 1 through the feed inlet 4, and chlorine is introduced through three pipelines. The reaction temperature was monitored by thermometer 7 readings. The obtained crude p-chlorophenol product is collected by a discharge port 6, tail gas is discharged by a tail gas port 5, and the content of p-chlorophenol is obtained after meteorological analysis.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. A tower type reaction device for producing parachlorophenol comprises a reaction tower, a chlorine introducing distributor, a feed inlet, a tail gas port, a discharge outlet, a chlorine pipeline and a thermometer; the chlorine introducing distributor and the thermometer are positioned inside the reaction tower; the chlorine pipeline is respectively connected to a chlorine distributor from the outside of the reaction tower, and the tail gas port is positioned at the top of the reaction tower; the discharge hole is positioned between the chlorine distributor and the tail gas hole; the lower part of the reaction tower is provided with a feed inlet, the reaction tower is internally provided with at least three chlorine-introducing distributors which are arranged in the space from a discharge port to the bottom of the tower at equal intervals, the outlet of the chlorine pipeline is communicated with the chlorine-introducing distributors through branch pipelines, and the chlorine-introducing distributors are of a net structure.

2. The tower-type reaction device for producing p-chlorophenol according to claim 1, wherein said thermometer is located at a position of a distributor for introducing chlorine gas.

3. The tower-type reaction device for producing the parachlorophenol as set forth in claim 1, wherein a feed pump is connected to said feed port, and a tail gas receiving device is connected to said tail gas port.

4. The tower-type reactor for producing p-chlorophenol according to claim 1, wherein the pumping speed of the inlet port for pumping phenol is 5-1000 ml/min.

5. The tower-type reaction device for producing p-chlorophenol according to claim 1, wherein the chlorine speed in the chlorine pipeline is 50-500 ml/min.

6. The tower-type reaction device for producing p-chlorophenol according to claim 1, wherein the reaction temperature in the chlorine distributor is 0-100 ℃.