CN210905006U

CN210905006U - Sulfuric acid concentration device

Info

Publication number: CN210905006U
Application number: CN201921821020.XU
Authority: CN
Inventors: 万庆辉; 孙明; 康乐; 张永杰; 旋立军
Original assignee: Xinle Weixing Ultrafine Material Co ltd
Current assignee: Xinle Weixing Ultrafine Material Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-07-03
Anticipated expiration: 2029-10-28

Abstract

The utility model relates to a sulfuric acid concentration device, which comprises a raw material tank, a heat exchanger, a heating concentrator, a condenser and a tail pipe; the raw material tank is communicated with the lower end of the inner pipe of the heat exchanger through a pipeline, the upper end of the inner pipe of the heat exchanger is connected with a feeding hole of the heating concentrator through a pipeline, the upper end of the outer pipe of the heat exchange pipe is connected with a discharging hole at the lower end of the heating concentrator through a pipeline, a concentrated sulfuric acid outlet is formed in the lower end of the outer pipe of the heat exchange pipe, the upper end of a glass cover at the upper part of the heating concentrator is communicated with the upper end of the inner pipe of the condenser through a pipeline, the lower end of the. The utility model discloses can carry out effectual concentration to sulphuric acid, and can prevent the effusion of the sour gas that produces, ensure operating personnel's health, reduce environmental pollution, replace valve structure simultaneously, alleviate operating personnel's intensity of labour, simultaneously can the energy saving.

Description

Sulfuric acid concentration device

Technical Field

The utility model relates to a concentrated sulfuric acid production device, in particular to a sulfuric acid concentration device.

Background

The purification process of artificially synthesized diamond needs a large amount of concentrated sulfuric acid, generally, 70% concentrated sulfuric acid is treated by an electric heating method, so that the concentration of the concentrated sulfuric acid is improved, 90% concentrated sulfuric acid is generated, partial saturated steam can be generated in the process, and the saturated steam is cooled to form a dilute acid solution. However, part of uncondensed saturated steam escapes from the equipment in the production process and enters a production site, so that the environment is polluted, and meanwhile, the health of workers on the site is influenced. In the prior art, a valve is arranged at the tail end of equipment and used for receiving a dilute acid solution, workers are required to adjust the valve according to reaction conditions, the labor intensity of workers is high, and the condition that uncondensed saturated steam escapes easily occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sulfuric acid concentration device to solve the problem that the existing sulfuric acid concentration device has partial uncondensed saturated steam to escape.

The utility model discloses a realize like this: a sulfuric acid concentration device comprises a raw material tank, a heat exchanger, a heating concentrator, a condenser and a tail pipe; the raw material groove is communicated with the lower end of the inner pipe of the heat exchanger through a pipeline, the upper end of the inner pipe of the heat exchanger is connected with the feed inlet of the heating concentrator through a pipeline, the upper end of the outer pipe of the heat exchange pipe is connected with the discharge outlet at the lower end of the heating concentrator through a pipeline, the lower end of the outer pipe of the heat exchange pipe is provided with a concentrated sulfuric acid outlet, the upper end of a glass cover on the upper portion of the heating concentrator is communicated with the upper end of the inner pipe of the condenser through a pipeline, the lower end of the inner pipe of the condenser is communicated with the tail pipe, and the.

The pipeline that connects heat exchanger inner tube upper end with the heating concentrator feed inlet is the horizontal pipe, connects heat exchanger outer tube upper end with the pipeline of heating concentrator discharge gate is the pipe that inclines, just the pipe that inclines is located the below of horizontal pipe, the height of raw materials groove is higher than the height of horizontal pipe.

The upper end of the outer pipe of the heat exchanger is provided with an acid gas outlet, and the acid gas outlet is connected with a condenser and a tail pipe.

The utility model discloses in adding 70% concentrated sulfuric acid pump sending to raw materials inslot earlier at the during operation, according to the continuous 70% concentrated sulfuric acid that supplyes in the raw materials inslot of the reaction condition, in 70% concentrated sulfuric acid enters into the heat exchange tube from raw materials groove to from up flowing down from the inner tube of heat exchange tube, flow in-process and the heat exchange tube 90% high temperature concentrated sulfuric acid heat transfer in the outer pipe of heat exchange tube, thereby preheat 70% concentrated sulfuric acid and cool down 90% high temperature concentrated sulfuric acid. Supersaturated steam generated by the heating concentrator enters the condenser to be cooled and condensed to generate a dilute acid solution, the dilute acid solution enters the tail pipe and then is collected at the part bent upwards of the tail pipe, the tail end of the inner pipe of the condenser is subjected to liquid sealing, uncondensed acid gas cannot escape from the tail pipe, and when the dilute acid solution formed by condensation is higher than the part bent downwards of the tail pipe, the dilute acid solution can automatically flow out of the tail pipe, a container is used at the tail pipe to collect and store the dilute acid solution, and an operator does not need to frequently switch a valve. Similarly, acid gas is formed by evaporation in the outer tube of the heat exchanger, and the same condenser and tail pipe are connected to the outer tube of the heat exchanger, so that the acid gas generated in the outer tube of the heat exchanger is condensed and collected, and the acid gas is prevented from escaping. The heat exchanger preheats the 70% concentrated sulfuric acid of inner tube with the high temperature concentrated sulfuric acid that the heating concentrator produced, has practiced thrift the energy, has reduced the temperature of concentrated sulfuric acid in the outer tube simultaneously, has reduced the production of sour gas.

The utility model discloses can carry out effectual concentration to sulphuric acid, and can prevent the effusion of the sour gas that produces, ensure operating personnel's health, reduce environmental pollution, replace valve structure simultaneously, alleviate operating personnel's intensity of labour, simultaneously can the energy saving.

Drawings

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

In the figure: 1. a raw material tank; 2. a heat exchanger; 3. a heating concentrator; 4. a condenser; 5. a tail pipe; 2-1, concentrated sulfuric acid outlet; 2-2, an acid gas outlet; 2-3, horizontal pipe; 2-4, an inclined pipe; 3-1, a discharge hole; 3-2, a feed inlet; 3-3, glass cover; 4-1, a condensed water inlet; 4-2 and a condensed water outlet.

Detailed Description

As shown in fig. 1, the utility model comprises a raw material tank 1, a heat exchanger 2, a heating concentrator 3, a condenser 4 and a tail pipe 5; the raw material tank 1 is communicated with the lower end of an inner pipe of a heat exchanger 2 through a pipeline, the upper end of the inner pipe of the heat exchanger 2 is connected with a feeding hole 3-2 of a heating concentrator 3 through a pipeline, the upper end of an outer pipe of the heat exchange pipe is connected with a discharging hole 3-1 at the lower end of the heating concentrator 3 through a pipeline, a concentrated sulfuric acid outlet 2-1 is formed in the lower end of the outer pipe of the heat exchange pipe, the upper end of a glass cover 3-3 at the upper part of the heating concentrator 3 is communicated with the upper end of the inner pipe of a condenser 4 through a pipeline, the lower end of the inner pipe of the.

Wherein, heating concentrator 3 adopts electrical heating to carry out evaporative concentration to solution, and its electrical heating part is used for heating the solution that gets into, thereby makes it produce steam and concentrate, and the steam that produces enters into the glass cover 3-3 of electrical heating part top in, the feed inlet 3-2 of solution is located the upper portion of electrical heating part, and the export of solution is located the lower part of electrical heating part, when installation heat exchanger 2 and heating concentrator 3, makes the upper end of 2 inner tubes of heat exchanger and the feed inlet 3-2 of heating concentrator 3 be located the coplanar. The pipeline connecting the upper end of the inner pipe of the heat exchanger 2 with the feed inlet 3-2 of the heating concentrator 3 is a horizontal pipe 2-3, the pipeline connecting the upper end of the outer pipe of the heat exchanger 2 with the discharge outlet 3-1 of the heating concentrator 3 is an inclined pipe 2-4, the inclined pipe 2-4 is positioned below the horizontal pipe 2-3, and the height of the raw material tank 1 is higher than that of the horizontal pipe 2-3. After a sulfuric acid solution is added into a raw material tank 1, the solution enters an inner pipe of a heat exchanger 2 under the action of gravity, then enters a heating concentrator 3 through a horizontal pipe 2-3, after evaporation concentration, the generated high-temperature solution enters an outer pipe of the heat exchanger 2 through an inclined pipe 2-4, and the high-temperature solution entering the outer pipe flows downwards and finally flows out of a concentrated sulfuric acid outlet 2-1.

The upper end of the outer pipe of the heat exchanger 2 is provided with an acid gas outlet 2-2 for collecting acid gas generated in the outer pipe of the heat exchanger 2, the acid gas outlet 2-2 is connected with a condenser 4 and a tail pipe 5, the structures of the condenser 4 and the tail pipe 5 are the same as the structures, and the collected acid gas is condensed.

The lower end of the outer pipe of the condenser 4 is provided with a condensed water inlet 4-1, the upper end of the outer pipe is provided with a condensed water outlet 4-2, condensed water enters from the condensed water inlet 4-1 and then is discharged from the condensed water outlet 4-2, and therefore the acid gas in the inner pipe is condensed.

The utility model discloses in adding 70% concentrated sulfuric acid to raw material tank 1 earlier at the during operation, 70% concentrated sulfuric acid enters into in the heat exchange tube from raw material tank 1 to from up flowing down from the inner tube of heat exchange tube, at the flow in-process with the heat exchange tube 90% high temperature concentrated sulfuric acid heat transfer in the outer pipe of heat exchange tube, thereby preheat 70% concentrated sulfuric acid and cool down 90% high temperature concentrated sulfuric acid. Supersaturated steam generated by the heating concentrator 3 enters the condenser 4 to be cooled and condensed to generate a dilute acid solution, the dilute acid solution enters the tail pipe 5 and then is converged at the upward bent part of the tail pipe 5, the tail end of the inner pipe of the condenser 4 is subjected to liquid sealing, uncondensed acid gas cannot escape from the tail pipe 5, and when the dilute acid solution formed by condensation is higher than the downward bent part of the tail pipe 5, the dilute acid solution automatically flows out of the tail pipe 5, a container is used at the tail pipe 5 for collecting and storing the dilute acid solution, and an operator does not need to frequently switch a valve. Similarly, the acid gas is formed by evaporation in the outer tube of the heat exchanger 2, and the same condenser 4 and tail pipe 5 are connected to the outer tube of the heat exchanger 2, so that the acid gas generated in the outer tube of the heat exchanger 2 is condensed and collected, and the acid gas is prevented from escaping. The heat exchanger 2 preheats 70% concentrated sulfuric acid of the inner tube by using high-temperature concentrated sulfuric acid generated by the heating concentrator 3, so that energy is saved, the temperature of the concentrated sulfuric acid in the outer tube is reduced, and the generation of acid gas is reduced.

Claims

1. A sulfuric acid concentration device is characterized by comprising a raw material tank, a heat exchanger, a heating concentrator, a condenser and a tail pipe; the raw material tank is communicated with the lower end of the inner pipe of the heat exchanger through a pipeline, the upper end of the inner pipe of the heat exchanger is connected with the feed inlet of the heating concentrator through a pipeline, the upper end of the outer pipe of the heat exchanger is connected with the discharge outlet at the lower end of the heating concentrator through a pipeline, the lower end of the outer pipe of the heat exchanger is provided with a concentrated sulfuric acid outlet, the upper end of a glass cover on the upper portion of the heating concentrator is communicated with the upper end of the inner pipe of the condenser through a pipeline, the lower end of the inner pipe of the condenser is communicated with the tail pipe, and the tail pipe is.

2. The sulfuric acid concentration device according to claim 1, wherein a pipeline connecting the upper end of the inner pipe of the heat exchanger with the feed port of the heating concentrator is a horizontal pipe, a pipeline connecting the upper end of the outer pipe of the heat exchanger with the discharge port of the heating concentrator is an inclined pipe, the inclined pipe is positioned below the horizontal pipe, and the height of the raw material tank is higher than that of the horizontal pipe.

3. The sulfuric acid concentration device according to claim 1, wherein an acid gas outlet is opened at the upper end of the outer tube of the heat exchanger, and a condenser and a tail pipe are connected to the acid gas outlet.