CN215489119U

CN215489119U - Anti-blocking device for desulfurization lime slurry pipeline

Info

Publication number: CN215489119U
Application number: CN202121335410.3U
Authority: CN
Inventors: 卢小勇; 桑先锋; 赵裕章
Original assignee: Jiangsu Tianying Environmental Protection Energy Co ltd; China Tianying Inc
Current assignee: Jiangsu Tianying Environmental Protection Energy Co ltd; China Tianying Inc
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-01-11
Anticipated expiration: 2031-06-16

Abstract

Desulfurization lime thick liquid pipeline prevents stifled device relates to msw incineration technical field. The system comprises an atomizer, a slurry tank, two slurry inlet intermediate pipes for one standby and two slurry return intermediate pipes for one standby, wherein the atomizer is correspondingly connected with a slurry input pipe which is also connected with a first control valve in series; one of the pulp inlet intermediate pipes is connected between the pulp input pipe and the pulp output pipe, and the other pulp return intermediate pipe is connected between the pulp return pipe and the input end of the pulp return input pipe. The anti-blocking device can effectively reduce the probability of lime slurry pipeline blocking, so that the flow and pressure of the lime slurry are stable, and the stable and efficient operation of the flue gas deacidification system is ensured. The whole system has low cost and stable and economic operation.

Description

Anti-blocking device for desulfurization lime slurry pipeline

Technical Field

The utility model relates to the technical field of waste incineration, in particular to a desulfurization lime slurry pipeline anti-blocking device.

Background

The household garbage incineration is a treatment mode with the most thorough harmless and obvious reduction of the household garbage and high resource utilization degree, and becomes a main form of household garbage treatment in China.

The domestic garbage incineration flue gas containing a large amount of harmful substances is generated, and along with the stricter and stricter national emission requirements on the waste incineration flue gas, reasonable and effective flue gas treatment is a necessary condition for ensuring the standard emission of the flue gas. The process for removing acidic pollutants is that a semi-dry process and a dry process are mostly adopted in domestic established waste incineration power plants, and the rotary atomizer semi-dry process is the mainstream process for flue gas treatment of the current waste incineration power plants, so that the deacidification efficiency is high.

In the prior art, a lime slurry pump conveys slurry to a head tank, and then the slurry is supplied to an atomizer from the head tank, and because the pressure difference between the head tank and the atomizer is small, and the corners of a valve and a pipeline between the head tank and the atomizer are more, the pipeline between the head tank and the atomizer is often blocked; the flow of the slurry supply pipeline is adjusted according to the actual use amount, and when the flow of the lime slurry is small, the pipeline is easy to block; due to the concentration of water and slurry for pulping and the like, after the operation for a period of time, the pipe wall of the slurry supply pipeline is easy to scale and cause blockage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a desulfurization lime slurry pipeline anti-blocking device, which cancels a head tank, adds a slurry return pipeline, supplies slurry under pressure to an atomizer (the control pressure is 0.1-0.2 MPa), and solves the problem of pipeline blocking between the head tank and the atomizer; in addition, two slurry inlet intermediate pipes for one use and two slurry return intermediate pipes for one use are arranged, the two slurry inlet intermediate pipes and the two slurry return intermediate pipes for one use are switched periodically through a metal hose and a quick connector for use, the switched slurry inlet intermediate pipes and slurry return intermediate pipes are cleaned by 3-5% hydrochloric acid, and the cleaned pipelines are reserved, so that the normal supply of slurry is ensured, and the smoke can be discharged up to the standard.

The technical scheme for realizing the purpose is as follows: desulfurization lime thick liquid pipeline prevents stifled device, its characterized in that: the system comprises an atomizer, a slurry tank, two slurry inlet intermediate pipes for one standby and two slurry return intermediate pipes for one standby, wherein the atomizer is correspondingly connected with a slurry input pipe which is also connected with a first control valve in series;

the two ends of the pulp inlet intermediate pipe, the two ends of the pulp return intermediate pipe, the input end of the pulp input pipe, the output end of the pulp return pipe, the output end of the pulp output pipe and the input end of the pulp return input pipe are respectively connected with a first quick coupling, one of the first quick couplings at one end of the pulp inlet intermediate pipe is connected with the first quick coupling at the input end of the pulp input pipe through a first metal hose, the other first quick coupling at the other end of the pulp return intermediate pipe is connected with the first quick coupling at the output end of the pulp output pipe through a second metal hose, one of the first quick couplings at one end of the pulp return intermediate pipe is connected with the first quick coupling at the output end of the pulp return pipe through a third metal hose, and the first quick coupling at the other end of the pulp return intermediate pipe is connected with the first quick coupling at the input end of the pulp return input pipe through a fourth metal hose.

Furthermore, the anti-blocking device further comprises an acid tank, the acid tank is connected with an acid liquid output pipe and an acid liquid return pipe, an acid liquid pump is connected to the acid liquid output pipe in series, the output end of the acid liquid output pipe and the input end of the acid liquid return pipe are respectively connected with a second quick connector, and the second quick connectors connected to the end portions of the acid liquid output pipe and the acid liquid return pipe are used for being connected with the blocked pulp inlet intermediate pipe and the blocked pulp return intermediate pipe through a fifth metal hose, so that the blocked pulp inlet intermediate pipe and the blocked pulp return intermediate pipe are dredged.

Furthermore, a basket filter, a flow meter and a slurry supply regulating valve are connected in series on a slurry input pipe between the first control valve and the atomizer.

Furthermore, a pressure gauge is connected beside the output end of the first control valve.

Furthermore, a slurry return input pipe connected with the slurry tank is connected in series with a slurry return regulating valve.

The utility model has the beneficial effects that:

the anti-blocking device can effectively reduce the probability of lime slurry pipeline blocking, so that the flow and pressure of the lime slurry are stable, and the stable and efficient operation of the flue gas deacidification system is ensured. The whole system has low cost and stable and economic operation.

Drawings

FIG. 1 is a system diagram of one of the operating states of the present invention.

Detailed Description

As shown in fig. 1, the utility model comprises an atomizer 1, a slurry tank 2, an acid tank 3, a first slurry inlet intermediate pipe 4, a second slurry inlet intermediate pipe 5, a first slurry return intermediate pipe 6 and a second slurry return intermediate pipe 7, wherein the atomizer 1 is correspondingly connected with a slurry input pipe 8, the slurry input pipe 8 is also connected in series with a first control valve 9, the slurry input pipe 8 between the first control valve 9 and the atomizer 1 is also connected in series with a basket filter 10, a flowmeter 11 and a slurry supply regulating valve 12, the input end of the first control valve 9 is also connected in side-by-side with a slurry return pipe 14, and the output end of the first control valve 9 is also connected in side-by-side with a pressure gauge 13.

The slurry tank 2 is connected with a slurry output pipe 28 and a slurry return input pipe 15, the slurry return input pipe 15 is connected with a slurry return regulating valve 16 in series, the slurry output pipe 28 is connected with a lime slurry pump 17 in series, the acid tank 3 is connected with an acid liquid output pipe 18 and an acid liquid return pipe 19, the acid liquid output pipe 18 is connected with an acid liquid pump 20 in series, and the output end of the acid liquid output pipe 18 and the input end of the acid liquid return pipe 19 are respectively connected with a second quick coupling 21.

The two ends of the first slurry inlet middle pipe 4, the two ends of the second slurry inlet middle pipe 5, the two ends of the first slurry return middle pipe 6, the two ends of the second slurry return middle pipe 7, the input end of the slurry input pipe 8, the output end of the slurry return pipe 14, the output end of the slurry output pipe 28 and the input end of the slurry return input pipe 15 are respectively connected with a first quick joint 22.

One end of each of the first slurry inlet intermediate pipe 4, the second slurry inlet intermediate pipe 5, the first slurry return intermediate pipe 6 and the second slurry return intermediate pipe 7 is respectively connected in series with a three-way valve 25, ports a and b of the three-way valve 25 are respectively connected in series with acid liquor connecting pipes 26 correspondingly connected to ports c and the upper end of each of the first slurry inlet intermediate pipe 4, the second slurry inlet intermediate pipe 5, the first slurry return intermediate pipe 6 and the second slurry return intermediate pipe 7, and free ends of the acid liquor connecting pipes 26 respectively extend to positions where the acid pipes 3 are placed and are respectively connected with third quick connectors 27.

The pipeline connection relationship of the present embodiment will be specifically described below with the first slurry inlet intermediate pipe 4 and the first slurry return intermediate pipe 6 as normal working pipelines, and the second slurry inlet intermediate pipe 5 and the second slurry return intermediate pipe 7 as pipelines to be cleaned.

The first quick coupling 22 at one end of the first slurry inlet middle pipe 4 is connected with the first quick coupling 22 at the input end of the slurry inlet pipe 8 through a first metal hose 23, the first quick coupling 22 at the other end is connected with the first quick coupling 22 at the output end of the slurry outlet pipe 28 through a second metal hose 24, the first quick coupling 22 at one end of the first slurry return middle pipe 6 is connected with the first quick coupling 22 at the output end of the slurry return pipe 14 through a third metal hose 29, and the first quick coupling 22 at the other end is connected with the first quick coupling 22 at the input end of the slurry return inlet pipe 15 through a fourth metal hose 30.

The second slurry inlet middle pipe 5 and the first quick coupling 22, which is far away from one end of the second slurry return middle pipe 7 connected with the acid liquid connecting pipe 26, are connected through a fifth metal hose 31, the second quick coupling 21 at the output end of the acid liquid output pipe 18 is connected with the third quick coupling 27 at the end of the acid liquid connecting pipe 26 correspondingly connected with the second slurry return middle pipe 7 through a sixth metal hose 31, and the second quick coupling 21 at the input end of the acid liquid return pipe 19 is connected with the third quick coupling 27 at the end of the acid liquid connecting pipe 26 correspondingly connected with the second slurry inlet middle pipe 5 through a seventh metal hose 32.

When the utility model works, the ports a and b of the three-way valves 25 connected in series on the first slurry inlet middle pipe 4 and the first slurry return middle pipe 6 are communicated, and the ports a and c of the three-way valves 25 connected in series on the second slurry inlet middle pipe 5 and the second slurry return middle pipe 7 are communicated.

The lime slurry pump 17 conveys the slurry in the slurry tank 2 to the first slurry inlet intermediate pipe 4 through the second metal hose 24, one part of the slurry output by the first slurry inlet intermediate pipe 4 is sent to the atomizer 1 through the first control valve 9, the basket filter 10, the flowmeter 11 and the slurry supply regulating valve 12, the other part of the slurry flows back to the slurry tank 1 through the slurry return pipe 14, the first slurry return intermediate pipe 6 and the fourth metal hose 30, the slurry supply pressure and the flow of the atomizer are controlled through the slurry supply regulating valve 12 and the slurry return regulating valve 16, and the pressure gauge 13 and the flowmeter 11 monitor the pressure and the flow.

The cleaning principle of the second slurry inlet middle pipe 5 and the second slurry return middle pipe 7 is as follows: and starting the acid liquid pump 20, conveying 3-5% of hydrochloric acid in the acid liquid pump 20 to the second pulp return intermediate pipe 7 and the second pulp inlet intermediate pipe 5 through the acid liquid connecting pipe 26 correspondingly connected with the fifth metal hose 31 and the second pulp return intermediate pipe 7, and returning the hydrochloric acid to the acid tank 3 through the acid liquid connecting pipe 26 correspondingly connected with the second pulp inlet intermediate pipe 5 and the seventh metal hose 32, so that the cleaning of the second pulp inlet intermediate pipe 5 and the second pulp return intermediate pipe 7 is completed, and the pipeline is kept smooth.

When the second slurry inlet middle pipe 5 and the second slurry return middle pipe 7 are working pipelines and the first slurry inlet middle pipe 4 and the first slurry return middle pipe 6 are pipelines which need to be cleaned due to blockage, the switching connection is performed according to the connection structure, and the specific switching connection principle is clear to those skilled in the art and is not described herein again.

It should be further noted that, in actual use, any one of the first intermediate slurry inlet pipe 4 and the first intermediate slurry return pipe 6 may be set as a working pipeline, and any one of the second intermediate slurry inlet pipe 5 and the second intermediate slurry return pipe 7 may be set as a working pipeline.

Claims

1. Desulfurization lime thick liquid pipeline prevents stifled device, its characterized in that: the system comprises an atomizer, a slurry tank, two slurry inlet intermediate pipes for one standby and two slurry return intermediate pipes for one standby, wherein the atomizer is correspondingly connected with a slurry input pipe which is also connected with a first control valve in series;

2. The desulfurization lime slurry pipeline anti-blocking device according to claim 1, characterized in that: the anti-blocking device further comprises an acid tank, the acid tank is connected with an acid liquid output pipe and an acid liquid return pipe, an acid liquid pump is connected to the acid liquid output pipe in series, the output end of the acid liquid output pipe and the input end of the acid liquid return pipe are respectively connected with a second quick connector, and the second quick connectors connected with the end portions of the acid liquid output pipe and the acid liquid return pipe are used for being connected with the blocked pulp inlet intermediate pipe and the blocked pulp return intermediate pipe through a fifth metal hose, so that the blocked pulp inlet intermediate pipe and the blocked pulp return intermediate pipe are dredged.

3. The desulfurization lime slurry pipeline anti-blocking device according to claim 1, characterized in that: and a basket filter, a flowmeter and a slurry supply regulating valve are connected in series on a slurry input pipe between the first control valve and the atomizer.

4. The desulfurization lime slurry pipeline anti-blocking device according to claim 1, characterized in that: and a pressure gauge is connected beside the output end of the first control valve.

5. The desulfurization lime slurry pipeline anti-blocking device according to claim 1, characterized in that: the slurry return input pipe connected with the slurry tank is connected with the slurry return regulating valve in series.