CN-224207588-U - Automatic cleaning system for hydrogen peroxide primary filter

CN224207588UCN 224207588 UCN224207588 UCN 224207588UCN-224207588-U

Abstract

The utility model discloses an automatic cleaning system for a hydrogen peroxide primary filter, which comprises a solvent cleaning process, a steam purging process, an alkaline cleaning process, a water cleaning process, an acid cleaning process and a nitrogen drying process. The solvent cleaning component, the steam cleaning component, the alkaline cleaning component, the water cleaning component, the acid cleaning component and the nitrogen drying component in the cleaning process are connected with the solvent cleaning tank, the cooler, the filter and the like to form independent cleaning parts, and meanwhile the solvent cleaning tank is used as a common component to participate in each flow, so that the filter element in the solvent cleaning tank is cleaned in multiple steps, and the whole process is automatically controlled by the DCS to be performed on each cut-off valve and the pump body. The method has the advantages of reducing the operation of operators, ensuring the safe operation of the device, improving the cleaning efficiency, shortening the cleaning time, effectively reducing the use amount of acid and alkali, accurately controlling the time of each step in the cleaning and ensuring the stable cleaning quality.

Inventors

YIN YINHUA
ZHOU GAOFENG
LI HUA
HU HAOWEN
SHE LINYUAN
ZHANG YANYAN
GAO CHUANPING
LI WENWU
ZHOU XUEJUN
XIANG XIANG
GUO HUAFEI
ZHENG HUABO
ZHANG YU
XU LONG

Assignees

湖北三宁化工股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250430

Claims (7)

1. The automatic cleaning system for the hydrogen peroxide primary filter is characterized by comprising a first pipeline (27) and a second pipeline (28), wherein a solvent tank (23), a solvent pump (24), a heater (17), a solvent cut-off valve (12), the first pipeline (27), a solvent cleaning tank (6), the second pipeline (28), a filter cut-off valve (10) and a filter (11) are sequentially connected, the other end of the filter (11) enters the top of the solvent tank (23) through the pipeline, the solvent pump (24) is connected with the bottom of the solvent tank (23), a second thermometer (13) is arranged at the outlet end of the heater (17), a solvent in the solvent tank (23) is used for dissolving residues on a cleaning target filter in the solvent cleaning tank (6), the input end of the cleaning target filter in the solvent cleaning tank (6) faces the second pipeline (28) when in use, the output end of the cleaning target filter faces the first pipeline (27), and the filter (11) is used for filtering solid parts which are not dissolved in the solvent cleaning tank (6).
2. The automatic cleaning system for the hydrogen peroxide primary filter according to claim 1, wherein the end part of the first pipeline (27) is connected with a steam cut-off valve (1), the second pipeline (28) is connected with a cooling cleaning cut-off valve (7), the cooling cleaning cut-off valve (7) is connected with the inlet end of the cooler (8), the outlet end of the cooler (8) enters the top of the solvent tank (23) through the pipeline, the bottom end of the solvent tank (23) is provided with a liquid level regulating valve (25), the liquid level regulating valve (25) is communicated with the wastewater tank (26), and the outlet end of the cooler (8) is provided with a first thermometer (9).
3. The automatic cleaning system for the hydrogen peroxide primary filter according to claim 2, wherein the second pipeline (28) is connected with a liquid alkali reflux cut-off valve (15), the liquid alkali reflux cut-off valve (15) is connected with the top of a liquid alkali tank (19), and the bottom of the liquid alkali tank (19) is connected with the first pipeline (27) through a liquid alkali pump (20) and a liquid alkali circulation cut-off valve (4).
4. A hydrogen peroxide primary filter automatic cleaning system according to claim 3, characterized in that the end of the first pipe (27) is connected with a water shut-off valve (2), and the end of the second pipe (28) is connected with a waste water tank (26) through a waste liquid shut-off valve (18).
5. The automatic cleaning system for the hydrogen peroxide primary filter according to claim 4, wherein the second pipeline (28) is connected with a nitric acid reflux cut-off valve (16), the nitric acid reflux cut-off valve (16) is connected with the top of a nitric acid tank (22), and the bottom of the nitric acid tank (22) is connected with the first pipeline (27) through a nitric acid pump (21) and a nitric acid circulation cut-off valve (5).
6. The automatic cleaning system for the hydrogen peroxide primary filter according to claim 5, wherein the end part of the first pipeline (27) is connected with a nitrogen shut-off valve (3), and the end part of the second pipeline (28) is connected with an evacuation shut-off valve (14).
7. The automatic cleaning system for the hydrogen peroxide primary filter according to claim 6, wherein the steam shut-off valve (1), the water shut-off valve (2), the nitrogen shut-off valve (3), the liquid alkali circulation shut-off valve (4), the nitric acid circulation shut-off valve (5), the cooling and cleaning shut-off valve (7), the filter shut-off valve (10), the solvent shut-off valve (12), the emptying shut-off valve (14), the liquid alkali reflux shut-off valve (15), the nitric acid reflux shut-off valve (16), the waste liquid shut-off valve (18) and the liquid level regulating valve (25) are controlled to be opened and closed by a DCS system, and the solvent pump (24), the liquid alkali pump (20) and the nitric acid pump (21) are controlled to be started and stopped by the DCS system.

Description

Automatic cleaning system for hydrogen peroxide primary filter Technical Field The utility model relates to the field of dry-mixed mortar production, in particular to an automatic cleaning system for a hydrogen peroxide primary filter. Background In the production of the hydrogen peroxide device, because a solid catalyst exists in the hydrogenation tower, a filter is generally adopted for filtering the catalyst for intercepting the catalyst, and the core function of the catalyst is to prevent hydrogenation working solution from carrying the catalyst into a later-stage process. Common filter cleaning requires manual operation, and when the pressure difference of the filter rises to an early warning value, the filter is cut out of the system to clean or replace the filter element, and then the filter is put into the system for reuse. The existing filter cleaning technology has the following defects: 1. The manual dependency is strong, operators are required to intervene in the whole filter element cleaning process, and potential safety hazards exist. 2. The cleaning frequency is high, the filter element of the filter is frequently cleaned, and the acid and alkali are excessively consumed, so that the cost is increased. 3. The cleaning quality is greatly fluctuated, the manual operation of cleaning the filter has the problems of inaccurate cleaning time sequence and the like, and the condition that the cleaning effect does not reach the standard can be possibly caused. Disclosure of Invention The utility model aims to solve the technical problem of providing an automatic cleaning system for a hydrogen peroxide primary filter, which is used for solving the problems of strong manual dependency, high cleaning frequency, large cleaning quality fluctuation and the like in filter cleaning, thereby fundamentally saving manpower and material resources and realizing cost reduction and synergy of the device. In order to solve the technical problems, the utility model adopts the following technical scheme: The utility model provides a hydrogen peroxide solution primary filter self-cleaning system, including first pipeline and second pipeline, the solvent tank, the solvent pump, the heater, the solvent trip valve, first pipeline, the solvent washs the jar, the second pipeline, filter trip valve and filter connect gradually, the other end of filter gets into solvent tank top through the pipeline, the solvent pump is connected with the bottom of solvent tank, the exit end of heater is equipped with the second thermometer, solvent is used for dissolving the washing target filter in the solvent washs the jar on the residue, the input orientation second pipeline during the use of the washing target filter in the solvent washs the jar, the output orientation first pipeline during the use, the filter is used for filtering the solid part that does not dissolve in the solvent washs the jar. The first pipeline end connection has steam trip valve, is connected with the cooling on the second pipeline and washs the trip valve, and the cooling washs the trip valve and be connected with the cooler entry end, and the cooler exit end gets into the solvent jar top through the pipeline, and the solvent jar bottom is equipped with the liquid level control valve, liquid level control valve and waste water jar intercommunication, and the cooler exit end is equipped with first thermometer. The second pipeline is connected with the liquid alkali reflux cut-off valve, the liquid alkali reflux cut-off valve is connected with the top of the liquid alkali tank, and the bottom of the liquid alkali tank is connected with the first pipeline through the liquid alkali pump and the liquid alkali circulation cut-off valve. The end part of the first pipeline is connected with a water shut-off valve, and the end part of the second pipeline is connected with a waste water tank through a waste liquid shut-off valve. The second pipeline is connected with a nitric acid reflux cut-off valve, the nitric acid reflux cut-off valve is connected with the top of the nitric acid tank, and the bottom of the nitric acid tank is connected with the first pipeline through a nitric acid pump and a nitric acid circulation cut-off valve. The end part of the first pipeline is connected with a nitrogen shut-off valve, and the end part of the second pipeline is connected with an emptying shut-off valve. The steam shut-off valve, the water shut-off valve, the nitrogen shut-off valve, the liquid alkali circulation shut-off valve, the nitric acid circulation shut-off valve, the cooling cleaning shut-off valve, the filter shut-off valve, the solvent shut-off valve, the emptying shut-off valve, the liquid alkali reflux shut-off valve, the nitric acid reflux shut-off valve, the waste liquid shut-off valve and the liquid level regulating valve are controlled to be opened and closed by a DCS system, and the solvent pump, the liquid alkali pump and the nitric acid pump are controlled to be