Adiabatic evaporation equipment for preparing sulfuric acid

Abstract

The adiabatic evaporation equipment comprises an adiabatic evaporation tower, second supporting legs are fixedly connected to the bottom of the adiabatic evaporation tower, a water cooling treatment box is arranged on the inner wall of the adiabatic evaporation tower, a filter plate is fixedly connected to the inner wall of the adiabatic evaporation tower, and filter holes are formed in the surface of the filter plate. A steam conveying ring is fixedly connected to the upper surface of the filter plate, a steam filter plate is fixedly connected to the upper surface of the steam conveying ring, steam filter holes are formed in the surface of the steam filter plate, and a partition plate is fixedly connected to the edge of the steam filter plate. According to the device, the temperature can be more gathered, so that the evaporation efficiency is improved, the temperature in the adiabatic evaporation tower 4 can be effectively kept stable, and the energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of making sulfuric acid, in particular to adiabatic evaporation equipment for making sulfuric acid. Background Art

[0002] Sulfuric acid is an inorganic compound and the most important oxygen-containing acid of sulfur. Sulfuric acid is the most active binary inorganic strong acid and can react with most metals. High concentrations of sulfuric acid have strong water absorption and can be used as a dehydrating agent to carbonize wood, paper, cotton and linen fabrics, biological skins and flesh and other carbohydrate-containing substances. It is also an important industrial raw material that can be used to make fertilizers, drugs, explosives, pigments, detergents, batteries, etc. It is also widely used in industries such as petroleum purification, metal smelting and dyes.

[0003] In the prior art, the efficiency of adiabatic evaporation equipment used for preparing sulfuric acid is not very high during use, which may lead to a decrease in the efficiency of producing sulfuric acid during use, indirectly affecting the production capacity. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an adiabatic evaporation device for preparing sulfuric acid.

[0005] The utility model is implemented by the following technical scheme: an adiabatic evaporation device for preparing sulfuric acid comprises an adiabatic evaporation tower, a second supporting leg is fixedly connected to the bottom of the adiabatic evaporation tower, a water cooling treatment box is provided on the inner wall of the adiabatic evaporation tower, a filter plate is fixedly connected to the inner wall of the adiabatic evaporation tower, filter holes are provided on the surface of the filter plate, a steam conveying ring is fixedly connected to the upper surface of the filter plate, a steam filter plate is fixedly connected to the upper surface of the steam conveying ring, steam filter holes are provided on the surface of the steam filter plate, and a partition is fixedly connected to the edge of the steam filter plate.

[0006] The number of the filter holes is set to be several and distributed in a ring shape, and the number of the steam filter holes is set to be several and arranged in a linear shape.

[0007] As a further improvement of the above solution, the water cooling treatment box is located below the steam conveying ring, the filter plate is located below the steam filter plate, and the partition is located inside the adiabatic evaporation tower.

[0008] The surface of the adiabatic evaporation tower is connected to a gas delivery pipeline, one end of the gas delivery pipeline is connected to a secondary absorption tower, a first supporting leg is fixedly connected to the bottom of the secondary absorption tower, and one end of the secondary absorption tower is connected to an input pipeline; one end of the adiabatic evaporation tower is connected to a treated gas output pipeline, one end of the treated gas output pipeline is connected to a tail gas absorption tower, a third supporting leg is fixedly connected to the bottom of the tail gas absorption tower, and the surface of the tail gas absorption tower is connected to an output pipeline.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] The utility model arranges a secondary absorption tower, which utilizes the contact between absolute dry flue gas and water, and evaporates water by humidifying the flue gas. During the evaporation process, the water evaporates, the latent heat takes away the heat, and the water temperature drops. The secondary absorption tower absorbs the flue gas first, and the flue gas at the outlet of the secondary absorption tower first enters from the lower surface of the adiabatic evaporation tower through an input pipeline connected to the upper surface of the adiabatic evaporation tower, then flows out from the top of the adiabatic evaporation tower, and then enters the interior of the tail gas absorption tower through the treated gas output pipeline, and then outputs through the output pipeline. Through the water-cooled treatment box arranged inside the adiabatic evaporation tower, water can be added to the water-cooled treatment box, and the flue gas is heated by the flue gas. When heated to a certain temperature, the water will evaporate into steam. The steam can move upward from the filter holes opened in the filter plate, enter the interior of the steam conveying ring, gather, and then be filtered again through the steam filter holes opened on the surface of the steam filter plate to prevent excess impurities from moving upward through the steam. The partition can isolate the upper and lower parts, dividing the adiabatic evaporation tower into two parts, and the steam is transmitted to the tail gas absorption tower through the treated gas output pipeline for the next treatment process. This device can make the temperature more concentrated, thereby improving the efficiency of evaporation, and can effectively maintain the temperature inside the adiabatic evaporation tower stable and reduce energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a schematic cross-sectional view of the structure of the adiabatic evaporation tower of the utility model;

[0013] Figure 3 This is a schematic diagram of the bottom structure of the tail gas absorption tower of the utility model;

[0014] Figure 4 It is a cross-sectional schematic diagram of the steam filter hole structure of the utility model.

[0015] Figure numerals: 1. secondary absorption tower; 2. input pipeline; 3. gas delivery pipeline; 4. adiabatic evaporation tower; 5. treated gas output pipeline; 6. tail gas absorption tower; 7. output pipeline; 8. first supporting leg; 9. second supporting leg; 10. third supporting leg; 11. water-cooled treatment box; 12. filter plate; 13. filter hole; 14. steam delivery ring; 15. steam filter plate; 16. steam filter hole; 17. partition. DETAILED DESCRIPTION

[0016] Combination Figure 1-4, an adiabatic evaporation device for preparing sulfuric acid, comprising an adiabatic evaporation tower 4, a second supporting leg 9 is fixedly connected to the bottom of the adiabatic evaporation tower 4, a water cooling treatment box 11 is provided on the inner wall of the adiabatic evaporation tower 4, a filter plate 12 is fixedly connected to the inner wall of the adiabatic evaporation tower 4, a filter hole 13 is provided on the surface of the filter plate 12, a steam conveying ring 14 is fixedly connected to the upper surface of the filter plate 12, a steam filter plate 15 is fixedly connected to the upper surface of the steam conveying ring 14, a steam filter plate 15 is provided on the surface of the steam filter plate 15, a steam filter hole 16 is provided on the surface of the steam filter plate 15, and a partition 17 is fixedly connected to the edge of the steam filter plate 15. Through the water-cooling treatment box 11 provided inside the adiabatic evaporation tower 4, water can be added to the water-cooling treatment box 11, and heated by the flue gas. When heated to a certain temperature, the water will evaporate into steam, and the steam can move upward from the filter hole 13 provided in the filter plate 12, enter the interior of the steam conveying ring 14, gather, and then be filtered again through the steam filter hole 16 provided on the surface of the steam filter plate 15 to prevent excess impurities from moving upward through the steam, and the partition 17 can isolate the upper and lower parts, dividing the adiabatic evaporation tower 4 into two parts.

[0017] There are several filter holes 13 arranged in an annular shape, and several filter holes 13 are opened on the surface of the filter plate 12. There are several steam filter holes 16 arranged in a linear shape, and several steam filter holes 16 are opened on the surface of the steam filter plate 15.

[0018] The water-cooling treatment box 11 is located below the steam conveying ring 14 , the filter plate 12 is located below the steam filter plate 15 , and the partition plate 17 is located on the inner side of the adiabatic evaporation tower 4 .

[0019] The surface of the adiabatic evaporation tower 4 is connected with a gas delivery pipeline 3, one end of the gas delivery pipeline 3 is connected with a secondary absorption tower 1, a first supporting leg 8 is fixedly connected to the bottom of the secondary absorption tower 1, one end of the secondary absorption tower 1 is connected with an input pipeline 2, the secondary absorption tower 1 first absorbs the flue gas, and the flue gas at the outlet of the secondary absorption tower 1 first enters from the bottom of the surface of the adiabatic evaporation tower 4 through the input pipeline 2 connected to the upper surface of the adiabatic evaporation tower 4.

[0020] One end of the adiabatic evaporation tower 4 is connected to a treated gas output pipeline 5, and one end of the treated gas output pipeline 5 is connected to a tail gas absorption tower 6. A third supporting leg 10 is fixedly connected to the bottom of the tail gas absorption tower 6, and an output pipeline 7 is connected to the surface of the tail gas absorption tower 6.

[0021] Implementation of the adiabatic evaporation equipment of the present application: This device utilizes the contact between absolutely dry flue gas and water to evaporate water through flue gas humidification. During the evaporation process, water evaporates, latent heat takes away heat, and the water temperature drops. The secondary absorption tower 1 first absorbs the flue gas, and the flue gas at the outlet of the secondary absorption tower 1 first enters from the input pipe 2 connected to the upper surface of the adiabatic evaporation tower 4 from below the surface of the adiabatic evaporation tower 4, and then flows out from the top of the adiabatic evaporation tower 4, and then enters the interior of the tail gas absorption tower 6 through the treated gas output pipe 5, and then is output through the output pipe 7. Through the water-cooled treatment box 11 arranged inside the adiabatic evaporation tower 4, water can be added to the water-cooled treatment box 11, and heated by the flue gas. When heated to a certain temperature, the water will evaporate into steam. The steam can move upward from the filter hole 13 opened in the filter plate 12, enter the interior of the steam conveying ring 14, gather, and then be filtered again through the steam filter hole 16 opened on the surface of the steam filter plate 15 to prevent excess impurities from moving upward through the steam. The partition 17 can isolate the upper and lower parts, dividing the adiabatic evaporation tower 4 into two parts, and the steam is transmitted to the tail gas absorption tower 6 through the treatment gas output pipeline 5 for the next treatment process. This device can make the temperature more concentrated, thereby improving the efficiency of evaporation, and can effectively maintain the temperature inside the adiabatic evaporation tower 4 stable and reduce energy loss.

Claims

1. An adiabatic evaporation device for preparing sulfuric acid, characterized in that: The invention comprises an adiabatic evaporation tower (4), wherein a second supporting leg (9) is fixedly connected to the bottom of the adiabatic evaporation tower (4), a water cooling treatment box (11) is provided on the inner wall of the adiabatic evaporation tower (4), a filter plate (12) is fixedly connected to the inner wall of the adiabatic evaporation tower (4), a filter hole (13) is provided on the surface of the filter plate (12), a steam conveying ring (14) is fixedly connected to the upper surface of the filter plate (12), a steam filter plate (15) is fixedly connected to the upper surface of the steam conveying ring (14), a steam filter plate (15) is fixedly connected to the surface of the steam filter plate (15), a steam filter hole (16) is provided on the surface of the steam filter plate (15), and a partition plate (17) is fixedly connected to the edge of the steam filter plate (15).

2. The adiabatic evaporation equipment for producing sulfuric acid according to claim 1, characterized in that: The number of the filter holes (13) is set to be a plurality and distributed in a ring shape, and the number of the steam filter holes (16) is set to be a plurality and arranged in a linear shape.

3. The adiabatic evaporation equipment for producing sulfuric acid according to claim 1, characterized in that: The water-cooling treatment box (11) is located below the steam conveying ring (14), the filter plate (12) is located below the steam filter plate (15), and the partition plate (17) is located on the inner side of the adiabatic evaporation tower (4).

4. The adiabatic evaporation equipment for producing sulfuric acid according to claim 1, characterized in that: The surface of the adiabatic evaporation tower (4) is connected to a gas delivery pipeline (3); one end of the gas delivery pipeline (3) is connected to a secondary absorption tower (1); a first support leg (8) is fixedly connected to the bottom of the secondary absorption tower (1); one end of the secondary absorption tower (1) is connected to an input pipeline (2); one end of the adiabatic evaporation tower (4) is connected to a treated gas output pipeline (5); one end of the treated gas output pipeline (5) is connected to a tail gas absorption tower (6); a third support leg (10) is fixedly connected to the bottom of the tail gas absorption tower (6); and the surface of the tail gas absorption tower (6) is connected to an output pipeline (7).

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