Hydrochloric acid gasification device

Abstract

The utility model discloses a hydrochloric acid gasification device, which relates to the technical field of gasification and comprises a hydrochloric acid metering tank, a hydrochloric acid preheater, a desorption tower and a gas storage tank which are communicated in sequence, a first inlet and a third inlet are arranged at the upper part of the desorption tower, a second inlet is arranged at the lower part of the desorption tower, a first outlet is arranged at the top of the desorption tower, and a second outlet is arranged at the bottom of the desorption tower. The first outlet is sequentially communicated with a first condenser and a second condenser, a bottom outlet of the first condenser and a bottom outlet of the second condenser are both communicated with the third inlet, and a reboiler is arranged between the second outlet and the second inlet; hydrochloric acid is directly resolved, calcium chloride does not need to be added, generation of byproduct waste is avoided, solid waste treatment is reduced, hydrochloric acid condensed by the first condenser and the second condenser flows back to the resolving tower, hydrochloric acid loss is reduced, resources are saved, and meanwhile the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gasification, in particular to a hydrochloric acid gasification device. Background Art

[0002] Hydrogen chloride is mainly used to make dyes, fragrances, medicines, various chlorides and corrosion inhibitors. Hydrochloric acid is an aqueous solution of hydrogen chloride. Currently, hydrochloric acid is mostly used to gasify hydrogen chloride. The efficiency of the hydrochloric acid gasification device in the existing workshop is not ideal. A large amount of hydrochloric acid cannot be gasified into hydrogen chloride gas, which cannot meet the production needs of the workshop and will also cause waste in production.

[0003] After searching, the patent announcement number is CN211255245U, which discloses a production device for decomposing hydrogen chloride from hydrochloric acid, including a jet mixer, a decomposition tower, a primary condenser for hydrogen chloride, a secondary condenser for hydrogen chloride, a demister, a condensed acid tank, a decomposition reboiler and a decomposition condensed water tank. A jet mixer is added before the decomposition tower, and then 50% calcium chloride and 31% hydrochloric acid are evenly mixed by the jet mixer, and then sent to the decomposition tower for decomposition, so that hydrogen chloride can be fully decomposed. The decomposed hydrogen chloride is then separated into dilute hydrochloric acid and hydrogen chloride gas by the demister, so that the final hydrogen chloride content can be greatly improved. However, this solution requires the consumption of a large amount of calcium chloride, and the calcium chloride solution needs to be evaporated to recover the calcium chloride, and then solid waste treatment is carried out. At the same time, the hydrochloric acid condensed by the primary condenser and the secondary condenser of hydrogen chloride is not recycled, which wastes resources and increases production costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a hydrochloric acid gasification device in view of the above shortcomings, which overcomes the existing defects of wasting energy and increasing production costs, and achieves the purpose of saving energy and reducing production costs.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a hydrochloric acid gasification device, characterized in that it comprises a hydrochloric acid metering tank, a hydrochloric acid preheater, a decomposition tower and a gas storage tank connected in sequence;

[0006] The upper part of the analytical tower is provided with a first inlet and a third inlet, the lower part of the analytical tower is provided with a second inlet, the top of the analytical tower is provided with a first outlet, and the bottom of the analytical tower is provided with a second outlet;

[0007] The first outlet is connected to the first condenser and the second condenser in sequence, and the bottom outlet of the first condenser and the bottom outlet of the second condenser are both connected to the third inlet;

[0008] A reboiler is provided between the second outlet and the second inlet.

[0009] Furthermore, the hydrochloric acid preheater is sequentially connected to a dilute hydrochloric acid condenser and a dilute hydrochloric acid storage tank.

[0010] Furthermore, the second condenser is connected to a buffer tank, and an observation bottle is provided between the buffer tank and the gas storage tank.

[0011] Furthermore, a concentrated hydrochloric acid outlet and a dilute hydrochloric acid inlet are provided at the upper portion of the hydrochloric acid preheater, and a concentrated hydrochloric acid inlet and a dilute hydrochloric acid outlet are provided at the lower portion of the hydrochloric acid preheater.

[0012] Furthermore, the concentrated hydrochloric acid outlet is connected to the first inlet, and the second outlet is connected to the dilute hydrochloric acid inlet and the second inlet respectively.

[0013] Furthermore, a hydrochloric acid metering pump is provided between the hydrochloric acid metering tank and the concentrated hydrochloric acid inlet.

[0014] The utility model adopts the above technical scheme, and compared with the prior art, it has the following advantages: first, hydrochloric acid is pumped from the hydrochloric acid metering tank into the hydrochloric acid preheater, and the temperature of the hydrochloric acid is increased by the hydrochloric acid preheater to prepare for the subsequent gasification process. The preheated hydrochloric acid enters the analysis tower again, and the liquid level is kept at 2 / 3 of the analysis tower. The hydrochloric acid in the analysis tower enters the reboiler for heating, and the generated hydrogen chloride gas and dilute hydrochloric acid are transported to the analysis tower again. The hydrogen chloride gas flows upward and is discharged from the analysis tower, and the dilute hydrochloric acid is transported to the hydrochloric acid preheater, the dilute hydrochloric acid condenser and the dilute hydrochloric acid storage tank in sequence through the bottom of the analysis tower, and is stored in the dilute hydrochloric acid storage tank.

[0015] After the hydrogen chloride gas is discharged from the analysis tower, it enters the first condenser and the second condenser in sequence for condensation and dehydration to obtain condensed hydrochloric acid and dry hydrogen chloride gas. The condensed hydrochloric acid flows back to the analysis tower through the bottom outlet of the first condenser and the bottom outlet of the second condenser, and the dry hydrogen chloride gas enters the buffer tank, the observation bottle and the gas storage tank in sequence. The buffer tank is used to stabilize and adjust the gas pressure in the pipeline, the observation bottle is used to monitor the release of hydrogen chloride gas, and the gas storage tank is used to store hydrogen chloride gas.

[0016] The hydrochloric acid is directly analyzed without adding calcium chloride, thus avoiding the generation of by-product waste and reducing solid waste treatment. At the same time, the hydrochloric acid condensed by the first condenser and the second condenser is refluxed into the analysis tower, thus reducing the loss of hydrochloric acid, saving resources and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a hydrochloric acid gasification device in an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the hydrochloric acid preheater.

[0019] In the figure: 1-hydrochloric acid metering tank, 2-hydrochloric acid metering pump, 3-dilute hydrochloric acid storage tank, 5-dilute hydrochloric acid condenser, 6-hydrochloric acid preheater, 7-reboiler, 8-analysis tower, 9-buffer tank, 10-observation bottle, 11-gas storage tank, 12-first condenser, 13-second condenser, 14-concentrated hydrochloric acid outlet, 15-dilute hydrochloric acid inlet, 16-concentrated hydrochloric acid inlet, 17-dilute hydrochloric acid outlet, 18-first inlet, 19-second inlet, 20-first outlet, 21-second outlet, 22-third inlet. DETAILED DESCRIPTION

[0020] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Examples, such as Figure 1-2 As shown, a hydrochloric acid gasification device comprises a hydrochloric acid metering tank 1, a hydrochloric acid preheater 6, a decomposition tower 8 and a gas storage tank 11 which are connected in sequence, a concentrated hydrochloric acid outlet 14 and a dilute hydrochloric acid inlet 15 are provided at the upper portion of the hydrochloric acid preheater 6, a concentrated hydrochloric acid inlet 16 and a dilute hydrochloric acid outlet 17 are provided at the lower portion of the hydrochloric acid preheater 6, a first inlet 18 and a third inlet 22 are provided at the upper portion of the decomposition tower 8, a second inlet 19 is provided at the lower portion of the decomposition tower 8, a first outlet 20 is provided at the top of the decomposition tower 8, and a second outlet 21 is provided at the bottom of the decomposition tower 8.

[0022] A hydrochloric acid metering pump 2 is provided between the hydrochloric acid metering tank 1 and the concentrated hydrochloric acid inlet 16, the concentrated hydrochloric acid outlet 14 is connected to the first inlet 18, the second outlet 21 is connected to the dilute hydrochloric acid inlet 15 and the second inlet 19 respectively, the dilute hydrochloric acid outlet 17 is connected to the dilute hydrochloric acid condenser 5 and the dilute hydrochloric acid storage tank 3 in sequence, and a reboiler 7 is provided between the second outlet 21 and the second inlet 19.

[0023] The first outlet 20 is connected to the first condenser 12 and the second condenser 13 in sequence. The bottom outlet of the first condenser 12 and the bottom outlet of the second condenser 13 are both connected to the third inlet 22. The second condenser 13 is connected to the buffer tank 9. An observation bottle 10 is provided between the buffer tank 9 and the gas storage tank 11.

[0024] Working principle: First, hydrochloric acid is pumped from the hydrochloric acid metering tank 1 into the hydrochloric acid preheater 6, and the temperature of the hydrochloric acid is increased by the hydrochloric acid preheater 6 to prepare for the subsequent gasification process. The preheated hydrochloric acid then enters the analysis tower 8, and the liquid level is maintained at 2 / 3 of the analysis tower 8. The hydrochloric acid in the analysis tower 8 enters the reboiler 7 for heating, and the generated hydrogen chloride gas and dilute hydrochloric acid are transported back to the analysis tower 8. The hydrogen chloride gas flows upward and is discharged from the analysis tower 8, and the dilute hydrochloric acid is transported to the hydrochloric acid preheater 6, the dilute hydrochloric acid condenser 5 and the dilute hydrochloric acid storage tank 3 in sequence through the bottom of the analysis tower 8, and is stored in the dilute hydrochloric acid storage tank 3.

[0025] After the hydrogen chloride gas is discharged from the analysis tower 8, it enters the first condenser 12 and the second condenser 13 in sequence for condensation and dehydration to obtain condensed hydrochloric acid and dry hydrogen chloride gas. The condensed hydrochloric acid flows back to the analysis tower 8 through the bottom outlet of the first condenser 12 and the bottom outlet of the second condenser 13. The dry hydrogen chloride gas enters the buffer tank 9, the observation bottle 10 and the gas storage tank 11 in sequence. The buffer tank 9 is used to stabilize and adjust the gas pressure in the pipeline, the observation bottle 10 is used to monitor the release of hydrogen chloride gas, and the gas storage tank 11 is used to store hydrogen chloride gas.

[0026] The hydrochloric acid is directly analyzed without adding calcium chloride, thus avoiding the generation of by-product waste and reducing solid waste treatment. At the same time, the hydrochloric acid condensed by the first condenser 12 and the second condenser 13 is refluxed into the analysis tower 8, thus reducing the loss of hydrochloric acid, saving resources and reducing production costs.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A hydrochloric acid gasification device, characterized in that: It comprises a hydrochloric acid metering tank (1), a hydrochloric acid preheater (6), a desorption tower (8) and a gas storage tank (11) which are connected in sequence; The analysis tower (8) is provided with a first inlet (18) and a third inlet (22) at the top, a second inlet (19) at the bottom, a first outlet (20) at the top, and a second outlet (21) at the bottom. The first outlet (20) is connected in sequence to the first condenser (12) and the second condenser (13); the bottom outlet of the first condenser (12) and the bottom outlet of the second condenser (13) are both connected to the third inlet (22); A reboiler (7) is provided between the second outlet (21) and the second inlet (19).

2. A hydrochloric acid gasification device as claimed in claim 1, characterized in that: The hydrochloric acid preheater (6) is sequentially connected to the dilute hydrochloric acid condenser (5) and the dilute hydrochloric acid storage tank (3).

3. A hydrochloric acid gasification device as claimed in claim 1, characterized in that: The second condenser (13) is connected to a buffer tank (9), and an observation bottle (10) is provided between the buffer tank (9) and the gas storage tank (11).

4. A hydrochloric acid gasification device as claimed in claim 1, characterized in that: The upper portion of the hydrochloric acid preheater (6) is provided with a concentrated hydrochloric acid outlet (14) and a dilute hydrochloric acid inlet (15), and the lower portion of the hydrochloric acid preheater (6) is provided with a concentrated hydrochloric acid inlet (16) and a dilute hydrochloric acid outlet (17).

5. A hydrochloric acid gasification device as claimed in claim 4, characterized in that: The concentrated hydrochloric acid outlet (14) is connected to the first inlet (18), and the second outlet (21) is connected to the dilute hydrochloric acid inlet (15) and the second inlet (19) respectively.

6. A hydrochloric acid gasification device as claimed in claim 4, characterized in that: A hydrochloric acid metering pump (2) is provided between the hydrochloric acid metering tank (1) and the concentrated hydrochloric acid inlet (16).

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