Feeding and alkalifying system of trioxymethylene light component removal tower

Abstract

The utility model discloses a trioxymethylene light component removal tower feeding alkali adding system, which belongs to the technical field of trioxymethylene production and comprises an intermediate storage tank, a static tank, a trioxymethylene light component removal tower body and an alkali tank. The device has the beneficial effects that the dosage of put alkali liquor is adjusted by arranging the alkali inlet adjusting valve, the dosage of desalted water is controlled by arranging the desalted water inlet adjusting valve according to the dosage of the put alkali liquor, and the dosage of the desalted water is controlled by arranging the check valve. By arranging the first pipeline and the second pipeline, a dilute alkali solution obtained by mixing alkali liquor and desalted water can smoothly enter the first pipeline to be mixed with materials conveniently, the materials are prevented from reversely entering the alkali inlet pipeline and the desalted water pipeline, and the materials and the dilute alkali solution can be fully mixed conveniently by arranging the mixer and the static tank; and the dilute alkali solution is fully reacted with acidic substances such as formic acid and formaldehyde carried by the material, and meanwhile, the depolymerization of trioxymethylene is further prevented, so that the purity of trioxymethylene fed into the light component removal tower is greatly improved, and the rectification quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to trioxane production technical field, more specifically, it relates to a kind of trioxane light removal tower feeding alkali system. BACKGROUND

[0002] Trioxane is an organic compound, chemical formula is C3H6O3, mainly used as engineering plastics polyoxymethylene and other chemical intermediates, also can be used as disinfectant and colorless flame fuel, in trioxane production, between the feed pump of light removal tower and intermediate storage tank, add a dilute alkali solution, make it and material fully mixed, dilute alkali solution concentration can be adjusted by periodically analyzing the pH value of water phase in the bottom of static tank by desalted water quantity and alkali addition amount;

[0003] The prior art in the above has the following defects:

[0004] 1, alkali liquor and material contact time is short, cannot fully mix;

[0005] 2, material carries the acid substance and cannot be fully reacted with alkali;

[0006] 3, soluble impurities in material water-soluble time is short, cannot be well separated in static tank. UTILITY MODEL CONTENT

[0007] (1) the technical problem to be solved

[0008] In view of the deficiencies in the prior art, the utility model aims at providing a kind of trioxane light removal tower feeding alkali system, it has the characteristics of improving the purity of trioxane light removal tower feeding material.

[0009] (2) technical scheme

[0010] To realize the above-mentioned purpose, the utility model provides a kind of trioxane light removal tower feeding alkali system, including intermediate storage tank, static tank, trioxane light removal tower body and alkali tank;

[0011] The discharge outlet of the intermediate storage tank is connected with feed pump by first pipeline, and the output end of the feed pump is connected with the feed inlet of the static tank by second pipeline;

[0012] The discharge outlet of the static tank is connected with the feed inlet of the trioxane light removal tower body by third pipeline;

[0013] The discharge outlet of the alkali tank is connected with alkali pump by fourth pipeline, and the output end of the alkali pump is connected with alkali inlet pipeline, and the other end of the alkali inlet pipeline is connected on the first pipeline.

[0014] When the alkali feeding system for the trioxane light removal column feedstock is used, the static tank is used to facilitate the reaction of the dilute alkali solution and the acidic substances such as formic acid and formaldehyde carried by the material, and further prevent the depolymerization of trioxane, the feed pump is used to facilitate the extraction of the material, and the alkali pump is used to facilitate the extraction of the alkali solution in the alkali tank.

[0015] Further, the alkali feeding adjusting valve and the check valve are arranged on the alkali feeding pipeline to control the dosage of the input alkali solution and prevent the material from entering the alkali feeding pipeline.

[0016] Further, the alkali feeding adjusting valve is arranged on the alkali feeding pipeline close to the alkali pump, and the check valve is arranged on the alkali feeding pipeline close to the first pipeline, so that the input alkali solution passes through the alkali feeding adjusting valve for adjustment and then enters the check valve.

[0017] Further, the desalting water pipeline is connected to the alkali feeding pipeline and is connected to one end of the alkali feeding pipeline between the alkali feeding adjusting valve and the check valve, so as to prevent the material from entering the desalting water pipeline and mix the alkali solution and the desalting water to obtain a dilute alkali solution.

[0018] Further, the desalting water feeding adjusting valve is arranged on the desalting water pipeline to control the dosage of the input desalting water.

[0019] Further, the mixer is arranged on the first pipeline to sufficiently mix the material and the input dilute alkali solution.

[0020] Further, one end of the alkali feeding pipeline connected to the first pipeline is located between the intermediate storage tank and the mixer, so as to ensure that the input dilute alkali solution can be synchronously input into the mixer with the material for mixing operation.

[0021] (3) Beneficial effects

[0022] In summary, the alkali feeding system for the trioxane light removal column feedstock has the following beneficial effects:

[0023] 1. The alkali feeding adjusting valve is arranged to adjust the dosage of the input alkali solution according to the demand, the desalting water feeding adjusting valve is arranged to control the dosage of the input desalting water according to the dosage of the input alkali solution, the check valve is arranged to facilitate the dilute alkali solution obtained by mixing the alkali solution and the desalting water to smoothly enter the first pipeline and mix with the material, the material is prevented from reversely entering the alkali feeding pipeline and the desalting water pipeline, the mixer and the static tank are arranged to facilitate the sufficient mixing of the material and the dilute alkali solution, the dilute alkali solution and the acidic substances such as formic acid and formaldehyde carried by the material are reacted sufficiently, and the depolymerization of trioxane is further prevented, so that the purity of the trioxane light removal column feedstock is greatly improved, and the rectification quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are only a part of the embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0025] Figure 1 The figure is a schematic diagram of the alkali adding system of the present application.

[0026] The marks in the drawings are:

[0027] 1, intermediate storage tank; 2, static tank; 3, trioxymethylene light removal tower body; 4, alkali tank; 5, first pipeline; 6, feed pump; 7, mixer; 8, second pipeline; 9, third pipeline; 10, desalted water pipeline; 11, desalted water inlet regulating valve; 12, fourth pipeline; 13, alkali pump; 14, alkali inlet pipeline; 15, alkali inlet regulating valve; 16, check valve. Specific embodiments

[0028] In order to make the technical means, creative features, purposes and effects achieved by the present application easy to understand, the technical solutions in the specific embodiments of the present application will be described clearly and completely below to further illustrate the present application. Obviously, the described specific embodiments are only a part of the embodiments of the present application, not all.

[0029] Embodiment one:

[0030] The present application provides a technical solution: a trioxymethylene light removal tower feed alkali adding system, comprising an intermediate storage tank 1, a static tank 2, a trioxymethylene light removal tower body 3 and an alkali tank 4; the discharge port of the intermediate storage tank 1 is connected with a feed pump 6 through a first pipeline 5, the output end of the feed pump 6 is connected with the feed inlet of the static tank 2 through a second pipeline 8; the discharge port of the static tank 2 is connected with the feed inlet of the trioxymethylene light removal tower body 3 through a third pipeline 9; the discharge port of the alkali tank 4 is connected with an alkali pump 13 through a fourth pipeline 12, the output end of the alkali pump 13 is connected with an alkali inlet pipeline 14, and the other end of the alkali inlet pipeline 14 is connected to the first pipeline 5.

[0031] Specifically, the alkali inlet pipeline 14 is provided with an alkali inlet adjusting valve 15 and a check valve 16, the dosage of the incoming alkali solution is controlled, and the material is prevented from entering the alkali inlet pipeline 14. The alkali inlet adjusting valve 15 is located on the alkali inlet pipeline 14 close to the alkali pump 13, and the check valve 16 is located on the alkali inlet pipeline 14 close to the first pipeline 5, so that the input alkali solution is first adjusted by the alkali inlet adjusting valve 15 and then enters the check valve 16. The desalted water pipeline 10 is connected to the alkali inlet pipeline 14, and the desalted water pipeline 10 is connected to one end of the alkali inlet pipeline 14 between the alkali inlet adjusting valve 15 and the check valve 16, so as to prevent the material from entering the desalted water pipeline 10 and mix the alkali solution and the desalted water to obtain a dilute alkali solution. The desalted water inlet adjusting valve 11 is arranged on the desalted water pipeline 10 to control the dosage of the input desalted water. The mixer 7 is arranged on the first pipeline 5 to mix the material and the input dilute alkali solution. The alkali inlet pipeline 14 is connected to one end of the first pipeline 5 between the intermediate storage tank 1 and the mixer 7, so that the input dilute alkali solution can be synchronized with the material to enter the mixer 7 for mixing operation. By using the above technical scheme, the alkali inlet adjusting valve 15 is used to adjust the flow of the alkali solution, the check valve 16 is used to limit the material in the first pipeline 5, so that the material is prevented from entering the alkali inlet pipeline 14 and the desalted water pipeline 10 during transportation in the first pipeline 5, the desalted water inlet adjusting valve 11 is used to adjust the flow of the desalted water in the desalted water pipeline 10, and the flow of the alkali solution is adjusted, and the mixer 7 is used to mix the transported alkali solution, desalted water and material, so as to facilitate subsequent reaction.

[0032] The working principle of the utility model is: in use, through the alkali pump 13 work, the alkali pump 13 is extracted in the alkali tank 4 through the fourth pipeline 12 alkali liquor, the extracted alkali liquor is entered into the alkali pipeline 14 through the fourth pipeline 12, through the alkali pipeline 14 on the alkali inlet regulating valve 15 work, the delivery flow of the alkali liquor in the alkali pipeline 14 is controlled, through the alkali pipeline 14 into the check valve 16, the staff puts the desalted water in the desalted water pipeline 10, and the desalted water in the desalted water pipeline 10 is controlled through the desalted water inlet regulating valve 11, and the dosage of the desalted water is adjusted according to the dosage of the alkali liquor in the alkali pipeline 14, so that the late use effect of the alkali liquor is better, the desalted water of the desalted water pipeline 10 is entered into the alkali pipeline 14, and is mixed with the alkali liquor, so that dilute alkali solution is obtained, and is discharged into the first pipeline 5 through the check valve 16, and the material is extracted in the intermediate storage tank 1 through the feed pump 6 work, the material is entered into the mixer 7 through the first pipeline 5, the check valve 16 is arranged on the alkali pipeline 14, the material is effectively avoided in the first pipeline 5 when the material is transported, the material is entered into the alkali pipeline 14 and the desalted water pipeline 10, the alkali liquor and the desalted water are discharged through the alkali pipeline 14 and are entered into the first pipeline 5, and are transported into the mixer 7 through the first pipeline 5, the alkali liquor, the desalted water and the material in the mixer 7 are fully mixed through the mixer 7 work, after mixing, the material obtained after mixing is extracted and is put into the static tank 2 through the feed pump 6 work, the material is stored through the static tank 2, the mixed material is reacted, the dilute alkali solution and the acid material such as formic acid and formaldehyde carried by the material are fully reacted, meanwhile, the trimeric formaldehyde depolymerization is further prevented, the purity of the trimeric formaldehyde feed into the light removal column is greatly improved, the rectification quality is improved, the staff detects and analyzes the pH value of the water phase at the bottom of the static tank 2 regularly, and after reaching the predetermined data, the material is put into the trimeric formaldehyde light removal column body 3, and the processing operation is completed.

[0033] The embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and the person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A trioxane light removal column feed caustic addition system characterized by: The intermediate storage tank (1), the static tank (2), the trioxane light removal tower body (3) and the alkali tank (4) are connected by the first pipeline (5), the second pipeline (8), the third pipeline (9) and the fourth pipeline (12). The outlet of the intermediate storage tank (1) is connected with a feed pump (6) through the first pipeline (5), and the outlet of the feed pump (6) is connected with the feed inlet of the static tank (2) through the second pipeline (8). The outlet of the static tank (2) is connected with the feed inlet of the trioxane light removal tower body (3) through the third pipeline (9). The outlet of the alkali tank (4) is connected with an alkali pump (13) through the fourth pipeline (12), the outlet of the alkali pump (13) is connected with an alkali inlet pipeline (14), and the other end of the alkali inlet pipeline (14) is connected with the first pipeline (5).

2. A feed alkali addition system for a paralin e removal column according to claim 1, characterized in that: The alkali inlet pipeline (14) is provided with an alkali inlet adjusting valve (15) and a check valve (16), so as to control the dosage of the input alkali solution and prevent the material from entering the alkali inlet pipeline (14).

3. A feed caustic system for a paralin e removal column according to claim 2, characterized in that: The alkali inlet adjusting valve (15) is located on the alkali inlet pipeline (14) close to the alkali pump (13), and the check valve (16) is located on the alkali inlet pipeline (14) close to the first pipeline (5), so as to ensure that the input alkali solution passes through the alkali inlet adjusting valve (15) for adjustment and then enters the check valve (16).

4. The feed alkali addition system for a paralin e removal column according to claim 1, characterized in that: The alkali inlet pipeline (14) is connected with a desalted water pipeline (10), and the desalted water pipeline (10) is connected to one end of the alkali inlet pipeline (14) between the alkali inlet adjusting valve (15) and the check valve (16), so as to prevent the material from entering the desalted water pipeline (10) and mix the alkali solution and the desalted water to obtain a dilute alkali solution.

5. A feed caustic system for a paralin e removal column according to claim 4, wherein: The desalted water pipeline (10) is provided with a desalted water inlet adjusting valve (11) for controlling the dosage of the input desalted water.

6. A feed caustic system for a paralin e removal column according to claim 1, characterized in that: The first pipeline (5) is provided with a mixer (7) for fully mixing the material and the input dilute alkali solution.

7. A feed caustic system for a paralin e removal column according to claim 1, characterized in that: The alkali inlet pipeline (14) is connected to one end of the first pipeline (5) between the intermediate storage tank (1) and the mixer (7), so as to ensure that the input dilute alkali solution can be synchronized with the material into the mixer (7) for mixing operation.

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