Desulfurization device

Abstract

The utility model relates to the field of desulfurization, in particular to a desulfurization device. Comprising a desulfurization tank, a lime water nozzle and a secondary absorption water curtain generator, the desulfurization tank main body is of a cylindrical tank body structure, the bottom of the tank body is a reaction reflux liquid tank, a waste gas inlet pipe is arranged on one side above the liquid level of the reaction reflux liquid tank, a plurality of lime water nozzles are arranged above the waste gas inlet pipe, and the lime water nozzles are communicated with a limestone slurry feeding pump on the outer side; a gas outlet pipe is arranged on one side of the desulfurization tank above the lime water spray head; the secondary absorption water curtain generator generates a water curtain from the reaction liquid absorbed by the water pump, and a discharge pipe is arranged at the bottom of the reaction reflux liquid tank. According to the device, the lime water is recycled for the second time, the unreacted lime water is sprayed out through the spray head to absorb sulfides, and the reacted but incomplete lime water is pumped through the water pump to generate a water curtain to be recycled, so that the lime water can be fully utilized.

Description

Technical Field

[0001] The utility model relates to the field of desulfurization, in particular to a desulfurization device. Background Art

[0002] Most of the waste generated in the production process of fuel ore is sulfur-containing waste gas, including sulfur dioxide and sulfur trioxide, which are harmful to people and air and cause pollution. Therefore, we need to desulfurize them before discharging them into the atmosphere. The most widely used method is to spray lime water in the desulfurization tower. However, the lime water sprayed into the desulfurization tower quickly falls to the bottom, which only gives this period of time to react. Although the desulfurization effect can be achieved, the lime water is not fully utilized, resulting in more losses. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art, meet the actual needs, and provide a desulfurization device, including a desulfurization tank, a lime water nozzle and a secondary absorption water curtain generator; the desulfurization tank body is in a cylindrical tank structure, the bottom of the tank body is a reaction reflux tank, a waste gas inlet pipe is arranged on one side above the liquid surface of the reaction reflux tank, a plurality of lime water nozzles are arranged above the waste gas inlet pipe, the lime water nozzles are connected with the limestone slurry feed pump on the outside, and an outlet pipe is arranged on one side of the desulfurization tank above the lime water nozzle; a water pump is arranged in the middle of the reaction reflux tank, a vertically arranged reflux pipe is connected above the water pump, a secondary absorption water curtain generator is arranged above the reflux pipe, the secondary absorption water curtain generator generates a water curtain with the reaction liquid sucked up by the water pump, and a discharge pipe is arranged at the bottom of the reaction reflux tank.

[0004] A lime water nozzle mounting frame is arranged above the exhaust gas inlet pipe, and the lime water nozzle is arranged on the lime water nozzle mounting frame.

[0005] The lime water nozzle mounting frame is arranged in two layers, the lime water nozzle mounting frame is cross-shaped, and the upper lime water nozzle mounting frame and the lower lime water nozzle mounting frame are offset by 45 degrees; a connecting pipe is arranged between the upper and lower lime water nozzle mounting frames, and the pipe body on one side of the middle part of the connecting pipe extends out of the desulfurization tank and is connected with the limestone slurry feed pump on the outside.

[0006] The water curtain generator comprises a distribution trough and a water curtain trough; an opening is arranged at the bottom of the distribution trough, and the opening is installed on the top pipe opening of the return pipe; a plurality of long strip-shaped water curtain troughs are arranged in an array around the distribution trough.

[0007] The water curtain groove is provided with a plurality of saw teeth along its length direction for facilitating the outflow of liquid.

[0008] The beneficial effects of the utility model are:

[0009] The device recycles the lime water for the second time. The unreacted lime water is sprayed out through the nozzle to absorb the sulfide, and the reacted but incomplete lime water is pumped up by the water pump to produce a water curtain for recycling, so that the lime water can be fully utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and implementation cases.

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

[0012] Figure 2 It is the internal schematic diagram of the utility model;

[0013] Figure 3 This is a schematic diagram of the lime water nozzle installation frame;

[0014] Figure 4 Schematic diagram of secondary absorption water curtain generator. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] See also Figure 1-2 .

[0017] The utility model discloses a desulfurization device, comprising a desulfurization tank 1, a lime water nozzle 2 and a secondary absorption water curtain generator 3; the desulfurization tank body is in a cylindrical tank structure, the bottom of the tank body is a reaction reflux tank 4, a waste gas inlet pipe 5 is arranged on one side above the liquid surface of the reaction reflux tank, a plurality of lime water nozzles are arranged above the waste gas inlet pipe 5, the lime water nozzles are connected with the limestone slurry feed pump on the outside, and an outlet pipe 6 is arranged on one side of the desulfurization tank above the lime water nozzle; a water pump 7 is arranged in the middle of the reaction reflux tank, a vertically arranged reflux pipe 8 is connected above the water pump, a secondary absorption water curtain generator 3 is arranged above the reflux pipe, the secondary absorption water curtain generator generates a water curtain with the reaction liquid sucked up by the water pump, and a discharge pipe 9 is arranged at the bottom of the reaction reflux tank.

[0018] A lime water nozzle mounting frame 10 is arranged above the exhaust gas inlet pipe, and the lime water nozzle is arranged on the lime water nozzle mounting frame.

[0019] The lime water nozzle mounting frame is arranged in two layers, the lime water nozzle mounting frame is cross-shaped, and the upper lime water nozzle mounting frame and the lower lime water nozzle mounting frame are offset by 45 degrees; a connecting pipe 11 is arranged between the upper and lower lime water nozzle mounting frames, and the pipe body on one side of the middle part of the connecting pipe extends out of the desulfurization tank and is connected with the limestone slurry feed pump on the outside.

[0020] The water curtain generator comprises a distribution groove 12 and a water curtain groove 13; an opening is arranged at the bottom of the distribution groove, and the opening is installed on the top nozzle of the return pipe; a plurality of long strip-shaped water curtain grooves 13 are arranged around the distribution groove.

[0021] The water curtain groove is provided with a plurality of saw teeth along its length direction for facilitating the outflow of liquid.

[0022] Specific operations

[0023] When the gas to be desulfurized enters from the exhaust gas inlet pipe 5, the spray head absorbs sulfides, and the accumulated liquid in the reaction reflux liquid tank 4 is pumped to the distribution tank 12 by a water pump, and the distribution tank flows into each water curtain tank 13, and a water curtain is generated by continuous overflow for secondary absorption.

[0024] The above description is only an embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent transformation made by using the contents of the specification and drawings of the present utility model or directly or indirectly applied in the relevant technical field is also included in the patent protection scope of the present utility model.

Claims

1. A desulfurization device, characterized in that: The invention comprises a desulfurization tank (1), a lime water nozzle (2) and a secondary absorption water curtain generator (3); the main body of the desulfurization tank is a cylindrical tank structure, the bottom of the tank body is a reaction reflux tank (4), a waste gas inlet pipe (5) is arranged on one side above the liquid surface of the reaction reflux tank, a plurality of lime water nozzles are arranged above the waste gas inlet pipe (5), the lime water nozzles are connected to the limestone slurry feed pump on the outside, and an outlet pipe (6) is arranged on one side of the desulfurization tank above the lime water nozzles; a water pump (7) is arranged in the middle of the reaction reflux tank, a vertically arranged reflux pipe (8) is connected above the water pump, a secondary absorption water curtain generator (3) is arranged above the reflux pipe, the secondary absorption water curtain generator generates a water curtain for the reaction liquid sucked up by the water pump, and a discharge pipe (9) is arranged at the bottom of the reaction reflux tank.

2. A desulfurization device according to claim 1, characterized in that: A lime water nozzle mounting frame (10) is arranged above the exhaust gas intake pipe, and the lime water nozzle is arranged on the lime water nozzle mounting frame.

3. A desulfurization device according to claim 2, characterized in that: The lime water nozzle mounting frame is arranged in two layers, the lime water nozzle mounting frame is cross-shaped, and the upper lime water nozzle mounting frame and the lower lime water nozzle mounting frame are offset by 45 degrees; a connecting pipe (11) is arranged between the upper and lower lime water nozzle mounting frames, and the pipe body on one side of the middle part of the connecting pipe extends out of the desulfurization tank and is connected to the limestone slurry feeding pump on the outside.

4. A desulfurization device according to claim 1, characterized in that: The water curtain generator comprises a distribution groove (12) and a water curtain groove (13); an opening is arranged at the bottom of the distribution groove, and the opening is installed on the top pipe opening of the return pipe; a plurality of long strip-shaped water curtain grooves (13) are arranged in an array around the distribution groove.

5. A desulfurization device according to claim 4, characterized in that: The water curtain groove is provided with a plurality of saw teeth along its length direction for facilitating the outflow of liquid.

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