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Sulfuric acid tower plugging agent and its preparation and use method

The technology of a sulfuric acid tower and a leakage plugging agent is applied in the field of chemical production, which can solve the problems of low repair quality, must stop work, affect production efficiency, etc., and achieve the effects of high production efficiency, long service life and low price.

Active Publication Date: 2021-08-27
白雨婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The repair process of the above three methods is relatively simple, with less investment, and can solve the leakage problem in a short period of time, but they all require the system to be shut down, which affects production efficiency, and the repair quality is not high, and leakage is likely to occur again in a short period of time question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] The present invention also provides a preparation method of the above-mentioned plugging agent for sulfuric acid tower, comprising the following steps: weighing each raw material according to parts by weight, adding all the raw materials into water glass, stirring into a molten state, and obtaining the plugging agent for sulfuric acid tower agent slurry.

[0031] The present invention also provides a method for using the above-mentioned sulfuric acid tower plugging agent, comprising the following steps:

[0032] a. Carry out repair welding on the leakage on the surface of the sulfuric acid tower, and drill out the grouting hole with an electric drill;

[0033] b. Use a tap to thread the glue injection hole, and install a pressure plugging grouting valve;

[0034] c. Take the above sulfuric acid tower plugging agent slurry for grouting. The grouting is divided into 3 times. The first time uses 0.3Mpa pressure, the second time uses 0.5Mpa pressure, and the third time use...

Embodiment 1

[0039] Embodiment 1 prepares sulfuric acid tower plugging agent of the present invention

[0040] The formula is: 50 parts of water glass, 20 parts of quartz powder, 10 parts of graphite powder, and 5 parts of silicon phosphate.

[0041] The preparation method is as follows: adding 20 parts of quartz powder, 10 parts of graphite powder and 5 parts of silicon phosphate into 50 parts of water glass to prepare a molten slurry.

[0042] The sulfuric acid tower plugging agent of Example 1 had an initial setting time of 2.58 hours and a final setting time of 3.67 hours.

[0043] After the plugging agent for sulfuric acid tower of Example 1 reaches the final setting time, it is immersed in a sulfuric acid solution with a concentration of 97.9% at a temperature of 65° C. After soaking for 10 days, it is observed that there is no de-powdering phenomenon, and after 30 days, it is observed that there is no small corrosion hole.

[0044] The plugging agent for sulfuric acid tower in Exam...

Embodiment 2

[0045] Embodiment 2 prepares sulfuric acid tower plugging agent of the present invention

[0046] The formula is: 50 parts of water glass, 20 parts of quartz powder, 10 parts of graphite powder, 3 parts of calcium oxide, and 5 parts of silicon phosphate.

[0047] The preparation method is as follows: 20 parts of quartz powder, 10 parts of graphite powder, 3 parts of calcium oxide and 5 parts of silicon phosphate are added to 50 parts of water glass to prepare a molten slurry.

[0048] The sulfuric acid tower plugging agent of Example 2 had an initial setting time of 0.89 hours and a final setting time of 1.65 hours.

[0049] After the plugging agent for sulfuric acid tower in Example 2 reaches the final setting time, it is immersed in a sulfuric acid solution with a concentration of 97.9% at a temperature of 65° C. After soaking for 10 days, it is observed that there is no de-powdering phenomenon, and after 30 days, it is observed that there is no small corrosion hole.

[0050]...

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PUM

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Abstract

The invention belongs to the technical field of chemical production, and in particular relates to a plugging agent for a sulfuric acid tower and a preparation and use method thereof. Aiming at the problem that leaks are easy to occur in the absorption tower during sulfuric acid production, and there is no efficient repair method without shutdown, the invention provides a plugging agent for sulfuric acid tower, which consists of: in parts by weight, water glass 45-60 16-23 parts of quartz powder, 6-14 parts of graphite powder, 4-8 parts of silicon phosphate. Its components can also include at least one of 4-8 parts of silicon carbide or 2-5 parts of calcium oxide. The present invention also provides the preparation and use methods of the above lost circulation agent. The plugging agent of the invention has simple ingredients, low price, easy-to-obtain raw materials, remarkable effect, safety and reliability, and long service life. The leak-stopping agent for sulfuric acid tower of the present invention can be used to mend leaks without shutting down, has high production efficiency, ensures the continuity and economy of production, and has remarkable economic benefits and popularization value.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a plugging agent for a sulfuric acid tower and a preparation and use method thereof. Background technique [0002] At present, the domestic sulfuric acid production line is mainly as follows: the sulfuric acid sand is put into the fluidized furnace for high-temperature desulfurization, and the sulfur dioxide flue gas is entered into the converter and the catalyst acts to generate sulfur trioxide, which is then absorbed by the absorption tower to obtain 98% of the finished sulfuric acid, high-concentration sulfur dioxide The flue gas acid production adopts the traditional two-transition and two-suction acid production process. In the process of acid production, because the absorption tower is in a highly corrosive environment for a long time, the acid-resistant bricks and mortar are easy to fall off or perforate and corrode the steel shell. [0003] In ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B111/23C04B111/72
CPCC04B28/26C04B2111/23C04B2111/72C04B14/06C04B14/024C04B22/16
Inventor 白雨婷
Owner 白雨婷