Anti-blocking high-concentration quick lime milk conveying system

Abstract

The utility model relates to an anti-blocking high-concentration quicklime milk conveying system, which is characterized in that a plurality of branch pipes are connected onto a main conveying pipe from a lime milk tank, each branch pipe is respectively connected into a neutralization reaction barrel, and a control valve is arranged on each branch pipe; the tail end of the main conveying pipe is connected into a circulating tank, and an outlet in the lower part of the circulating tank is connected into the nearest neutralization reaction barrel through a circulating pump. The system is simple and reasonable in design, the remaining quick lime milk entering the neutralization reaction barrel from the main conveying pipe enters the circulating tank, the flow speed of the lime milk in the main conveying pipe cannot be reduced, and the probability of scaling and blocking is reduced; quick lime milk in the circulating tank enters the neutralization reaction barrel through the circulating pump and continuously participates in the neutralization reaction, and due to the pressurization effect of the circulating pump, the turbulence degree in a system pipeline is high, and deposition and scaling are avoided. The system consumes less materials, is stable and reliable, is easy to control, is flexible and convenient to operate, can effectively reduce the scaling rate of high-concentration quicklime milk, and reduces the labor intensity.

Description

TECHNICAL FIELD

[0001] The utility model belongs to titanium dioxide production wastewater treatment technical equipment field, concretely relates to a kind of anti-blocking high concentration quicklime milk conveying system. BACKGROUND

[0002] In sulfuric acid method titanium dioxide production, 30-35 tons of 6-10% concentration acidic wastewater is generated for each ton of titanium dioxide, which must be treated to be qualified before being discharged or reused, and limestone and quicklime are usually used for neutralization, limestone and acidic wastewater are reacted first, pH is coarsely adjusted to 2-5, then quicklime is used for fine adjustment to neutral, while removing some heavy metal ions in ferrous sulfate in wastewater. During the treatment process, in order to improve the reaction effect, limestone and quicklime block are crushed to a certain fineness, and then slurry is prepared for reaction with acidic wastewater. Because of large amount of wastewater, high acidity and high content of soluble ferrous sulfate, quicklime needs to be prepared into high concentration to meet the production requirements. A large amount of heat is generated during slurry preparation and digestion of quicklime powder, which leads to high material temperature. In addition, due to high solid content, quicklime milk is easily deposited and scaled in pipeline during conveying process, which causes blockage of pipeline and equipment. Manual parking and cleaning are required, which is difficult and affects normal production. Therefore, dredging of conveying pipeline and pump cavity has become a big problem in post work. SUMMARY

[0003] The utility model aims at avoiding the shortcomings of prior art, and provides a high concentration quicklime milk conveying system capable of preventing scaling.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a high concentration quicklime milk conveying system capable of preventing blockage, characterized in that a plurality of branch pipes are connected to the main conveying pipe from the quicklime tank, each branch pipe is connected to a neutralization reaction barrel, and a control valve is arranged on the branch pipe.

[0005] The slope of the branch pipe is 2-3%, to prevent high concentration quicklime milk from being deposited in the branch pipe.

[0006] The control valve is connected to the pipe section of the branch pipe close to the main conveying pipe, to prevent high concentration quicklime milk from being deposited and blocking the main conveying pipe.

[0007] A stirrer is arranged in the circulating tank, to increase the turbulence degree of materials in the circulating tank and prevent high concentration quicklime milk from being deposited and scaled.

[0008] The main conveying pipe and the branch pipe are made of pipe material with high smoothness of inner wall.

[0009] The utility model discloses a beneficial effect is: system design is simple and reasonable, and the remaining quicklime milk in the main conveying pipe of quicklime milk enters the circulating tank, will not reduce the flow rate of quicklime milk in the main conveying pipe, reduces the probability of scale blockage, the circulating pump is entered in the neutralization reaction bucket to the quicklime milk in the circulating tank, continues to participate in the neutralization reaction, because of the pressure boost effect of circulating pump, the degree of turbulence in the system pipeline is high, avoids the deposition scale. The system consumes less material, and stable and reliable, easy control, operation is flexible and convenient, can effectively reduce the scale rate of high concentration quicklime milk, reduces the labor intensity, reduces the security risk when manual dredging, improves production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is schematic diagram of the utility model;

[0011] In the drawing: 1 - main conveying pipe, 2 - neutralization reaction bucket, 3 - branch pipe, 4 - control valve, 5 - circulating tank, 6 - circulating pump, 7 - agitator. DETAILED DESCRIPTION

[0012] Embodiment, see Figure 1 A kind of anti-blocking high concentration quicklime milk conveying system, it is characterized by: multiple branch pipes 2 are connected on the main conveying pipe 1 from quicklime tank, each branch pipe 2 is respectively connected into neutralization reaction bucket 4, control valve 3 is equipped on the branch pipe 2;The end of the main conveying pipe 1 is connected into circulating tank 5, and the outlet in the lower part of the circulating tank 5 is connected into the nearest neutralization reaction bucket 4 by circulating pump 6.

[0013] The slope of the branch pipe 2 is 2-3%, to prevent high concentration quicklime milk from depositing in the branch pipe 2.

[0014] The control valve 3 is connected on the pipe section of the branch pipe 2 close to the main conveying pipe 1, to prevent high concentration quicklime milk from depositing and blocking the main conveying pipe 1 before the control valve 3.

[0015] The agitator 7 is equipped in the circulating tank 5, to increase the degree of turbulence of material in the circulating tank 5, prevent high concentration quicklime milk from depositing scale.

[0016] The main conveying pipe 1 and branch pipe 2 adopt the pipe material with high smoothness of inner wall.

Claims

1. A non-clogging high concentration quicklime milk delivery system characterized by: A plurality of branch pipes (2) are connected to the main pipe (1) from the lime milk tank, each branch pipe (2) is connected to a neutralization reaction barrel (4), and a control valve (3) is arranged on the branch pipe (2); the end of the main pipe (1) is connected to a circulating tank (5), and the outlet of the lower part of the circulating tank (5) is connected to the nearest neutralization reaction barrel (4) through a circulating pump (6).

2. A non-clogging high concentration quicklime milk delivery system as claimed in claim 1, characterized in that: The slope of the branch pipe (2) is 2-3% to prevent high-concentration quicklime milk from depositing in the branch pipe (2).

3. A non-clogging high concentration quicklime milk delivery system as claimed in claim 1, characterized in that: The control valve (3) is connected to the pipe section of the branch pipe (2) close to the main pipe (1) to prevent high-concentration quicklime milk from depositing and blocking the main pipe (1) before the control valve (3).

4. A non-clogging high concentration quicklime milk delivery system as claimed in claim 1, characterized in that: A stirrer (7) is arranged in the circulating tank (5) to increase the turbulence degree of the material in the circulating tank (5) and prevent high-concentration quicklime milk from depositing and scaling.

5. A non-clogging high concentration quicklime milk delivery system as claimed in claim 1, characterized in that: The main pipe (1) and the branch pipe (2) adopt a pipe material with high smoothness of the inner wall.

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