Cleaning system for cleaning contaminated acid filter press by using contaminated acid stock solution
By mixing the dirty acid stock solution with hydrogen sulfide gas in the dirty acid vulcanization treatment, the problem that traditional water washing liquid cannot remove hydrogen sulfide gas is solved, and the working environment and production efficiency are significantly improved.
Patent Information
- Application Number
- CN202421771593.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-24
AI Technical Summary
During the process of dirty acid vulcanization, traditional low-concentration vulcanization liquid washing cannot effectively remove the hydrogen sulfide gas from the filter slag, causing hydrogen sulfide to dissipate, pollute the working environment and endanger the health of workers.
The dirty acid stock solution is used as the water washing liquid of the filter press, and the reaction is carried out by thoroughly mixing with hydrogen sulfide gas into the first-stage vulcanization reactor, and combined with the circulation treatment of the first-stage and second-stage vulcanization reactors to ensure the full progress of the vulcanization reaction.
Effective deodorization basically eliminates the problem of heavy hydrogen sulfide gas when unloading slag by the dirt acid filter press, improves the working environment, judges the washing effect through turbidity, and improves production efficiency.
Smart Images
Figure CN222789200U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of filter press cleaning, in particular to a cleaning system for cleaning a dirty acid filter press by using dirty acid stock solution. Background Art
[0002] In the production technology of waste acid sulfidation treatment, the filter press is an important device for solid-liquid separation of sulfided liquid in the whole production system. In the process of water washing after the liquid is filled in the traditional waste acid sulfidation filter press, the washing liquid is generally clean water or a low-concentration solution. When our unit used low-concentration sulfided liquid to wash the filter press slag sample according to the traditional design, it was found that: due to production process reasons, the low-flow liquid pumped from the thickener into the waste acid filter press for solid-liquid separation often contains a lot of hydrogen sulfide gas. During the filtration process of the filter press, the hydrogen sulfide gas will adhere to the filter press slag. When using low-concentration sulfided liquid as the filter press washing liquid, the hydrogen sulfide cannot be removed, resulting in hydrogen sulfide being emitted when the filter press unloads the slag, causing the on-site working environment to deteriorate and endangering the health of the workers. Utility Model Content
[0003] Based on this, the purpose of the utility model is to provide a cleaning system for cleaning a waste acid filter press using a waste acid stock solution, so as to solve the technical problems raised in the above background.
[0004] To achieve the above-mentioned purpose, the utility model includes a waste acid stock liquid tank, a waste acid stock liquid pump, a primary vulcanization reactor, a secondary vulcanization reactor, a thickener and a filter press which are connected in sequence, and also includes a water washing tank, the water washing tank is connected to the waste acid stock liquid tank, and the water washing tank is connected to the filter press through the water washing pump, the filter press is connected to a discharge belt, and the pipeline connecting the waste acid stock liquid pump and the primary vulcanization reactor is connected to a hydrogen sulfide preparation system through a bypass pipeline.
[0005] Furthermore, the bottoms of the primary vulcanization reactor and the secondary vulcanization reactor are connected to the water inlet of the vulcanization drain pump through a pipeline, and the water outlet of the vulcanization drain pump is connected to the top of the primary vulcanization reactor through a pipeline.
[0006] Furthermore, the bottom of the thickener is connected to one side of the filter press through a pipeline, and a filter press pump is provided on the pipeline. The other side of the filter press is connected to the top of the thickener through a reflux pipe.
[0007] The utility model adopts the waste acid stock solution as the washing liquid, has a good deodorizing effect, basically eliminates the problem of heavy smell of hydrogen sulfide gas when the waste acid filter press unloads slag, greatly improves the working environment of on-site production of the waste acid sulfidation treatment process, and can easily judge the progress of the washing effect through the turbidity of the washing filtrate, so as to better control the washing time and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0009] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0010] The following describes an embodiment of the utility model based on its overall structure.
[0011] like Figure 1 As shown, the utility model includes a waste acid stock liquid tank 1, a waste acid stock liquid pump 2, a primary vulcanization reactor 4, a secondary vulcanization reactor 5, a thickener 6 and a filter press 8 which are connected in sequence, and also includes a water washing tank 9, which is connected to the waste acid stock liquid tank. The waste acid stock liquid tank transports the waste water stock liquid to the water washing tank 9 through a pipeline, and uses the waste acid stock liquid as a washing liquid to clean the filter press 8. The water washing tank 9 is connected to the filter press 8 through a water washing pump 10, and the filter press 8 is connected to a discharge belt 11. The pipeline connecting the waste acid stock liquid pump 2 and the primary vulcanization reactor 4 is connected to a hydrogen sulfide preparation system through a bypass pipeline. The hydrogen sulfide preparation system transports hydrogen sulfide gas and the waste acid stock liquid to mix and then enter the primary vulcanization reactor 4. The bottom of the primary vulcanization reactor 4 and the secondary vulcanization reactor 5 are connected to the water inlet of the vulcanization drain pump 3 through a pipeline, the water outlet of the vulcanization drain pump 3 is connected to the top of the primary vulcanization reactor 4 through a pipeline, the bottom of the thickener 6 is connected to one side of the filter press 8 through a pipeline, and a filter press pump 7 is provided on the pipeline, and the other side of the filter press 8 is connected to the top of the thickener 6 through a reflux pipe.
[0012] When the cleaning system of the utility model is in use, the dirty acid stock liquid pump 2 extracts the dirty acid from the dirty acid stock liquid tank 1, fully mixes it with the hydrogen sulfide gas in the pipeline, and then enters the primary vulcanization reactor 4. The underflow of the primary reactor 4 circulates into the primary vulcanization reactor 4 through the sulfide exhaust pump 3, and the supernatant of the primary vulcanization reactor 4 enters the secondary vulcanization reactor 5 through the overflow pipe. The underflow of the secondary vulcanization reactor 5 returns to the primary reactor 4 through the sulfide exhaust pump 3 to ensure that the vulcanization reaction is fully carried out. The supernatant of the secondary vulcanization reactor 5 enters through the overflow pipe. After the thickener 6 performs solid-liquid sedimentation separation, the bottom flow of the thickener 6 is pumped into the filter press 8 through the filter press pump 7 for further solid-liquid separation. After the dirty acid filter press is filled with liquid, the dirty acid stock solution in the washing tank 9 is used for water washing, and the washing filtrate returns to the thickener 6. After the washing is completed, it is squeezed again. After blowing, the filter press 8 begins to unload the slag through the unloading belt 11. The unloaded arsenic filter cake is monitored by a portable alarm device, and the alarm value is recorded. The excess hydrogen sulfide gas in the arsenic filter cake is recycled and reused, thereby avoiding waste in process production and reducing cost consumption. The utility model adopts the dirty acid stock solution as the washing liquid, has a good deodorizing effect, and basically eliminates the problem of heavy hydrogen sulfide gas smell when the dirty acid filter press is unloading slag, greatly improving the working environment of the on-site production of the dirty acid sulfidation treatment process, and the progress of the washing effect can be easily judged by the turbidity of the washing filtrate, so as to better control the washing time and improve production efficiency.
[0013] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.
Claims
1. A cleaning system for cleaning a waste acid filter press using a waste acid stock solution, comprising a waste acid stock solution tank, a waste acid stock solution pump, a primary vulcanization reactor, a secondary vulcanization reactor, a thickener and a filter press connected in sequence, and also comprising a water washing tank, wherein the water washing tank is connected to the waste acid stock solution tank, and the water washing tank is connected to the filter press through a water washing pump, the filter press is connected to a discharge belt, and the pipeline connecting the waste acid stock solution pump and the primary vulcanization reactor is connected to a hydrogen sulfide preparation system through a bypass pipeline.
2. A cleaning system for cleaning a waste acid filter press using a waste acid stock solution according to claim 1, characterized in that: The bottoms of the primary vulcanization reactor and the secondary vulcanization reactor are connected to the water inlet of the vulcanization drain pump through a pipeline, and the water outlet of the vulcanization drain pump is connected to the top of the primary vulcanization reactor through a pipeline.
3. The cleaning system for cleaning a waste acid filter press using a waste acid stock solution according to claim 1, characterized in that: The bottom of the thickener is connected to one side of the filter press through a pipeline, and a filter press pump is arranged on the pipeline. The other side of the filter press is connected to the top of the thickener through a reflux pipe.