Reaction device

Abstract

The utility model discloses a reaction device which comprises a waste water tank, the output end of the wastewater tank is connected with the cyanogen breaking kettle and is used for conveying cyanogen-containing waste liquid; a first pump body is arranged at the output end of the cyanogen breaking kettle, and the output end of the first pump body is connected with the top of the cyanogen breaking kettle and a neutralization kettle; a second pump body is arranged at the output end of the neutralization kettle, and the output end of the second pump body is connected with the top of the neutralization kettle and a saline water tank; the cyanogen breaking kettle, the neutralization kettle and the wastewater tank are matched for use, a first pump body and a second pump body are utilized for circulation in the cyanogen breaking and neutralization process, full reaction is achieved, the total cyanogen content of cyanogen-containing wastewater obtained through cyanidation synthesis of o-chlorobenzyl cyanide can be reduced to 20 mg / kg, and meanwhile the pH value of saline water is close to alkalescence.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chemical equipment field especially relates to a reaction device. BACKGROUND

[0002] O-chlorobenzeneacetonitrile is an important organic chemical raw material. Generally, o-chlorobenzeneacetonitrile is generated by cyanation reaction of o-chlorobenzyl with sodium cyanide, but the excess sodium cyanide in the reaction will pollute water bodies. The reagent for breaking cyanide at present is generally hydrogen peroxide, sodium thiosulfate or sodium hypochlorite.

[0003] The breaking cyanide reaction needs sodium hypochlorite to be fully mixed with cyanide-containing wastewater, and the insufficient stirring intensity and mixing time will lead to that sodium hypochlorite and cyanide-containing wastewater cannot fully contact, thereby affecting the reaction rate and cyanide removal effect and reducing the breaking cyanide efficiency. UTILITY MODEL CONTENT

[0004] The utility model discloses a reaction device that solves the shortcomings in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a reaction device, comprising:

[0006] Wastewater tank;

[0007] The output end of the wastewater tank is connected with the cyanide breaking kettle for conveying cyanide-containing waste liquid;

[0008] The output end of the cyanide breaking kettle is provided with a first pump body, and the output end of the first pump body is connected with the top of the cyanide breaking kettle and a neutralization kettle;

[0009] The output end of the neutralization kettle is provided with a second pump body, and the output end of the second pump body is connected with the top of the neutralization kettle and a brine tank.

[0010] As a further description of the above technical scheme: a third pump body is arranged between the wastewater tank and the cyanide breaking kettle.

[0011] As a further description of the above technical scheme: the cyanide breaking kettle is connected with a first storage tank, and the output end of the first storage tank is provided with a fourth pump body.

[0012] As a further description of the above technical scheme: the neutralization kettle is connected with a second storage tank, and the output end of the second storage tank is provided with a fifth pump body.

[0013] As a further description of the above technical scheme: the output end of the brine tank is provided with a sixth pump body.

[0014] As a further description of the above technical scheme: a first condenser is arranged at the upper input end of the cyanide breaking kettle, and a second condenser is arranged at the upper input end of the neutralization kettle.

[0015] As a further description of the above technical solution: one end of the first condenser and the second condenser is communicated with the outside through a pipeline.

[0016] As a further description of the above technical solution: the output end of the first pump body and the cyan-breaking kettle are provided with an ORP detector.

[0017] As a further description of the above technical solution: the output end of the second pump body and the neutralization kettle are provided with a pH detector.

[0018] As a further description of the above technical solution: the cyan-breaking kettle and the neutralization kettle are provided with a thermometer.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] Through the cooperation of the cyan-breaking kettle, the neutralization kettle and the wastewater tank, the first pump body and the second pump body are used for circulation in the cyan-breaking and neutralization processes, so that sufficient reaction is realized, the cyan-containing wastewater synthesized by cyanization of o-chlorophenylacetonitrile can reduce the total cyan content to 20mg / kg, and the pH value of the brine is close to weak alkaline. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structural principle diagram of the reaction device is provided for the utility model.

[0022] LEGEND:

[0023] 1, cyan-breaking kettle; 2, neutralization kettle; 3, first condenser; 4, second condenser; 5, ORP detector; 6, pH detector; 7, wastewater tank; 8, first storage tank; 9, second storage tank; 10, brine tank; 11, first pump body; 12, second pump body; 13, third pump body; 14, fourth pump body; 15, fifth pump body; 16, sixth pump body. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] REFERENCE Figure 1The utility model provides a kind of reaction device, comprising: wastewater tank 7;The output end of wastewater tank 7 is connected with cyanide breaking kettle 1, to transport cyanide-containing waste liquid;The output end of cyanide breaking kettle 1 is provided with first pump body 11, and the output end of first pump body 11 is connected with the top of cyanide breaking kettle 1 and neutralization kettle 2;The output end of neutralization kettle 2 is provided with second pump body 12, and the output end of second pump body 12 is connected with the top of neutralization kettle 2 and salt water tank 10.

[0026] Third pump body 13 is arranged between wastewater tank 7 and cyanide breaking kettle 1.Cyanide breaking kettle 1 is connected with first storage tank 8, and fourth pump body 14 is arranged at the output end of first storage tank 8.Second storage tank 9 is connected with neutralization kettle 2, and fifth pump body 15 is arranged at the output end of second storage tank 9.Sixth pump body 16 is arranged at the output end of salt water tank 10.

[0027] In the embodiment, cyanide breaking kettle 1 is used to oxidize sodium cyanide in wastewater into sodium carbonate and nitrogen;neutralization kettle 2 is used to neutralize sodium carbonate and sodium hydroxide in wastewater into sodium chloride;ORP detector 5 is used to detect the oxidizability of materials in cyanide breaking kettle 1;pH detector 6 is used to detect the pH value of materials in neutralization kettle 2;wastewater tank 7 is used to transfer cyanide-containing wastewater of o-chlorophenylacetonitrile, which is transported to cyanide breaking kettle 1 by third pump body 13;first storage tank 8 is used to store sodium hypochlorite, which is transported to cyanide breaking kettle 1 by fourth pump body 14;second storage tank 9 is used to store hydrochloric acid, which is transported to neutralization kettle 2 by fifth pump body 15;salt water tank 10 is used to transfer salt water after neutralization, which is pumped to salt water treatment section by sixth pump body 16.

[0028] Cyanide breaking kettle 1 transfers materials to neutralization kettle 2 by first pump body 11;neutralization kettle 2 is transferred to salt water tank 10 by second pump body 12;salt water tank 10 is transferred to salt water treatment device by fourth pump body 14.Cyanide breaking kettle 1 is used to react cyanide in wastewater with oxidant sodium hypochlorite to break cyanide;neutralization kettle 2 is used to neutralize sodium hydroxide and sodium carbonate in wastewater into sodium chloride;meanwhile, cyanide breaking kettle 1 and neutralization kettle 2 are stirred tanks, which can fully stir materials inside;wastewater tank 7 is connected with cyanide breaking kettle 1 by third pump body 13;first storage tank 8 is connected with cyanide breaking kettle 1 by fourth pump body 14.

[0029] ORP detector 5 is arranged between the output end of first pump body 11 and cyanide breaking kettle 1;pH detector 6 is arranged between the output end of second pump body 12 and neutralization kettle 2.

[0030] In the embodiment, the cyanide breaking kettle 1 circulates the material through the first pump body 11 arranged below the cyanide breaking kettle and the oxidation of the wastewater is detected by the ORP detector 5. The cyanide breaking kettle 1 transfers the material to the neutralization kettle 2 through the first pump body 11 below the cyanide breaking kettle; the second storage tank 9 is pumped into the neutralization kettle 2 through the fifth pump body 15; the neutralization kettle 2 circulates the material through the second pump body 12 arranged below the neutralization kettle and the pH value of the material is detected by the pH detector 6; the neutralization kettle 2 transfers the material to the brine tank 10 through the second pump body 12 arranged below the neutralization kettle; the brine in the brine tank 10 is transferred to the brine treatment section through the material transfer pump 16; the material of the cyanide breaking kettle 1 is glass lining and the material of the neutralization kettle 2 is glass lining.

[0031] Through the cooperation of the cyanide breaking kettle 1, the neutralization kettle 2, the ORP detector 5 and the pH detector 6, the cyanide content in the cyanide-containing wastewater is less than 20 mg / kg and the pH value is 7-8. The treatment is more convenient.

[0032] The first condenser 3 is arranged at the upper input end of the cyanide breaking kettle 1 and the second condenser 4 is arranged at the upper input end of the neutralization kettle 2.

[0033] In the embodiment, the volatile substances in the cyanide breaking kettle 1 and the neutralization kettle 2 are condensed and refluxed through the first condenser 3 and the second condenser 4.

[0034] One end of the first condenser 3 and the second condenser 4 is connected with the outside through a pipeline for discharging tail gas.

[0035] The cyanide breaking kettle 1 and the neutralization kettle 2 are provided with thermometers for temperature detection and control.

[0036] Working principle:

[0037] The cyanide-containing wastewater in the wastewater tank 7 is pumped into the cyanide breaking kettle 1 through the third pump body 13 to measure the cyanide-containing wastewater, the cyanide breaking kettle 1 is opened for stirring, the bottom valve of the cyanide breaking kettle 1 is opened, and the first pump body 11 circulates the material in the cyanide breaking kettle 1. The material in the first storage tank 8 is pumped into the cyanide breaking kettle through the fourth pump body 14, the sodium hypochlorite is pumped into the cyanide breaking kettle until the ORP detector 5 detects that the material presents oxidation, the pumping of the sodium hypochlorite is stopped, and the cyanide breaking is completed. The first pump body 11 transfers the material in the cyanide breaking kettle 1 to the neutralization kettle 2, the neutralization kettle 2 is opened for stirring, the bottom valve is opened, and the second pump body 12 circulates the material in the neutralization kettle 2. The hydrochloric acid in the second storage tank 9 is pumped into the neutralization kettle 2 through the material transfer pump 15, the pH detector 6 detects that the pH value of the material is reduced to 7-8, the pumping of the hydrochloric acid is stopped, and the neutralization is completed. The second pump body 12 transfers the material to the brine tank 10 and pumps it to the brine treatment section through the sixth pump body 16.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A reaction apparatus characterized by comprising: The utility model relates to a kind of cyanide wastewater treatment system, including: Wastewater tank (7); The output end of the wastewater tank (7) is connected to cyanide breaking kettle (1), to deliver cyanide-containing waste liquid; The output end of the cyanide breaking kettle (1) is provided with first pump body (11), and the output end of the first pump body (11) is connected to the top of the cyanide breaking kettle (1) and neutralization kettle (2); The output end of the neutralization kettle (2) is provided with second pump body (12), and the output end of the second pump body (12) is connected to the top of the neutralization kettle (2) and salt water tank (10).

2. The reaction apparatus of claim 1, wherein: Third pump body (13) is arranged between the wastewater tank (7) and the cyanide breaking kettle (1).

3. The reaction apparatus of claim 1, wherein: The cyanide breaking kettle (1) is connected to first storage tank (8), and the output end of the first storage tank (8) is provided with fourth pump body (14).

4. The reaction apparatus of claim 1, wherein: The neutralization kettle (2) is connected to second storage tank (9), and the output end of the second storage tank (9) is provided with fifth pump body (15).

5. The reaction apparatus of claim 1, wherein: The output end of the salt water tank (10) is provided with sixth pump body (16).

6. The reaction apparatus of claim 1, wherein: The upper input end of the cyanide breaking kettle (1) is provided with first condenser (3), and the upper input end of the neutralization kettle (2) is provided with second condenser (4).

7. The reaction apparatus of claim 6, wherein: One end of the first condenser (3) and the second condenser (4) is communicated with the outside through pipeline.

8. The reactor of claim 1, wherein: The output end of the first pump body (11) is provided with ORP detector (5) between the cyanide breaking kettle (1).

9. The reactor of claim 1, wherein: The output end of the second pump body (12) is provided with pH detector (6) between the neutralization kettle (2).

10. The reactor of claim 1, wherein: The cyanide breaking kettle (1) and neutralization kettle (2) are provided with thermometer.

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