A sodium cyanurate prefilter
By designing a cyanurate sodium salt pre-filter, using air pressure purge and jet pipe cyclone cleaning methods, the problems of impurities and alkaline gas treatment in cyanurate sodium salt are solved, and sealed pre-filtration and gas treatment are realized, improving the environment and safety conditions.
Patent Information
- Application Number
- CN202420924028.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-29
AI Technical Summary
In the existing production process of trichloroisocyanuric acid, impurities in the sodium cyanurate salt cannot be effectively filtered, and alkaline odors in the sodium salt are difficult to collect and treat, resulting in environmental pollution and safety hazards.
A pre-filter of cyanurate sodium salt is designed, including a cylinder and a filter bag in the cylinder. The filter bag is connected to the air inlet through a bent pipe, and the alkaline gas in the sodium salt is discharged through the exhaust outlet by air pressure, and impurities on the side wall of the filter bag are cleaned through the cyclone of the jet pipe.
The closed pre-filtration of cyanurate sodium salt is achieved, effectively remove impurities, and the alkaline gas in the sodium salt is treated, which avoids gas leakage, improves the working environment, and ensures the safety of workers and the environment.
Smart Images
Figure CN222709107U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a chemical filtering device, in particular to a sodium cyanurate pre-filter. Background Art
[0002] The production process of trichloroisocyanuric acid is as follows: first, trisodium cyanurate is prepared with cyanuric acid and caustic soda in a molar ratio of 1.00:3.00-1.00:3.55; chlorine gas is introduced into the chlorination kettle into the salt-forming slurry; a chlorination reaction is carried out at an appropriate temperature to generate trichloroisocyanuric acid; during the alkali fusion process, impurities in cyanuric acid cannot react, and some insoluble substances will be present in the sodium salt; the sodium salt is strongly alkaline and emits an alkaline odor; currently, there is a lack of a device that can filter the insoluble substances in the sodium salt and collect the exhaust gas. Utility Model Content
[0003] In order to solve the above problems, the purpose of the utility model is to provide a sodium cyanurate pre-filter.
[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a sodium cyanurate pre-filter, comprising a cylinder and a filter bag arranged in the cylinder, the filter bag is a cylindrical structure, and the bottom is closed, the bottom of the cylinder is provided with a filtrate outlet, one side of the top side wall of the cylinder is provided with an air inlet, and the other side is provided with a feed inlet, the top of the cylinder is the exhaust gas outlet, and the air inlet is connected to the top of the filter bag through a curved pipe.
[0005] Furthermore, a hollow disc with a diameter larger than that of the curved pipe body is arranged at the lower end of the curved pipe in the top end of the filter bag, and downwardly inclined air jet pipes are arranged in the center of the side walls around the hollow disc.
[0006] Furthermore, a horizontal S-shaped tube is arranged at the bottom of the cylinder, and the filtrate outlet is located at one end of the S-shaped tube, and the filtrate outlet opening is facing downward.
[0007] Furthermore, a drain port is provided at the lower end of the U-shaped portion of the S-shaped tube.
[0008] Furthermore, the top edge of the filter bag is fixed to the top of the cylinder through an annular fixing ring.
[0009] Furthermore, the bottom of the filter bag bulges downward to form a spherical surface.
[0010] The utility model has the following advantages: when the utility model is used, the sodium salt enters the feed port and is filtered through the filter bag, impurities are in the filter bag, and the sodium salt is discharged through the filtrate outlet, and at the same time, the outside air is driven by the fan to enter the cylinder through the air inlet and the bent pipe, and the cylinder is purged, and the alkaline gas in the sodium salt is discharged through the tail gas outlet to the tail gas post-treatment equipment for treatment by air pressure; in addition, the arrangement of the jet pipe can not only play a purging effect, but also can collect the impurities on the side wall of the filter bag to the bottom under the vortex formed by the jet pipe, so as to ensure that the side wall will not accumulate debris and ensure the filtering effect of the side wall, and the air entering the filter bag goes down along the side wall of the filter bag, and then collects and collects upward through the center of the filter bag, so as to form a powerful and comprehensive circulation structure, which can more effectively take away the filter bag and the alkaline gas in the cylinder for discharge, collection and treatment, and the alkaline gas in the sodium salt is better treated.
[0011] In summary, the utility model performs closed pre-filtration on sodium salt and processes alkaline gas in sodium salt to avoid leakage of alkaline gas, effectively improves the working environment, ensures the safety of workers and the surrounding environment, and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The utility model is now further described with reference to the accompanying drawings.
[0013] Figure 1 It is a schematic diagram of the main internal structure of the utility model. DETAILED DESCRIPTION
[0014] like Figure 1 As shown, a sodium cyanurate pre-filter comprises a cylinder 1 and a filter bag 2 arranged in the cylinder 1, the filter bag 2 is a cylindrical structure, and the bottom is closed and convex downward to form a spherical surface, the top edge of the filter bag 2 is fixed to the top of the cylinder 1 by an annular fixing ring 12, the bottom of the cylinder 1 is provided with a filtrate outlet 3, one side of the top side wall of the cylinder 1 is provided with an air inlet 4, and the other side is provided with a feed port 5, the feed port 5 is used for the sodium salt feed port, the top of the cylinder 1 is the exhaust gas outlet 6, and the air inlet 4 is connected with the top of the filter bag 2 through a curved pipe 7.
[0015] In order to achieve a better gas distribution effect and purge the alkaline gas in the sodium salt more evenly and comprehensively, a hollow disk 8 with a diameter larger than the body of the bent pipe 7 is provided at the lower end of the bent pipe 7 in the top of the filter bag 2, and a downwardly inclined jet pipe 9 is arranged in the center of the side walls around the hollow disk 8, which can not only achieve a purging effect, but also can collect impurities on the side wall of the filter bag 2 to the bottom under the vortex formed by the jet pipe 9, ensuring that the side wall will not accumulate debris and ensuring the filtering effect of the side wall.
[0016] In order to facilitate emptying, a horizontal S-shaped tube 10 is provided at the bottom of the cylinder 1, and the filtrate outlet 3 is located at one end of the S-shaped tube 10, and a drain port 11 is provided at the lower end of the U-shaped part of the S-shaped tube 10 so that the filtrate outlet 3 opens downward. When the drain port 11 of the horizontal S-shaped tube 10 is closed, a certain communicating vessel closed area can be formed in the U-shaped part to prevent the filtrate outlet 3 from exhausting when the equipment is stopped or repaired, that is, to prevent gas from emitting from the lower part.
[0017] Working principle of the utility model: when the utility model is used, the sodium salt enters the feed inlet 5 and is filtered through the filter bag 2. Impurities are in the filter bag 2, and the sodium salt is discharged through the filtrate outlet 3. At the same time, the outside air is driven by the fan to enter the cylinder 1 through the air inlet 4 and the elbow 7 to purge the cylinder. The alkaline gas in the sodium salt is discharged through the tail gas outlet 6 to the tail gas post-treatment equipment for treatment by air pressure. The utility model performs closed pre-filtration on the sodium salt and treats the alkaline gas in the sodium salt to avoid leakage of the alkaline gas, effectively improves the working environment, ensures the safety of workers and the surrounding environment, and is more environmentally friendly.
[0018] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.
Claims
1. A sodium cyanurate pre-filter, comprising a cylinder (1) and a filter bag (2) arranged in the cylinder (1), characterized in that: The filter bag (2) is a cylindrical structure with a closed bottom. A filtrate outlet (3) is provided at the bottom of the cylinder (1). An air inlet (4) is provided on one side of the top side wall of the cylinder (1), and a feed inlet (5) is provided on the other side. The top of the cylinder (1) is an exhaust gas outlet (6), and the air inlet (4) is connected to the top of the filter bag (2) through a curved pipe (7).
2. A sodium cyanurate prefilter according to claim 1, characterized in that: A hollow disc (8) having a diameter larger than that of the body of the curved pipe (7) is arranged at the lower end of the curved pipe (7) in the top end of the filter bag (2), and an air jet pipe (9) is arranged obliquely downward at the center of the side wall surrounding the hollow disc (8).
3. A sodium cyanurate prefilter according to claim 1, characterized in that: A horizontal S-shaped tube (10) is arranged at the bottom of the cylinder (1), and the filtrate outlet (3) is located at one end of the S-shaped tube (10), and the opening of the filtrate outlet (3) faces downward.
4. A sodium cyanurate prefilter as claimed in claim 3, characterized in that: A drain port (11) is provided at the lower end of the U-shaped portion of the S-shaped tube (10).
5. A sodium cyanurate pre-filter according to claim 1, characterized in that: The top edge of the filter bag (2) is fixed to the top of the cylinder (1) via an annular fixing ring (12).
6. A sodium cyanurate prefilter according to claim 1, characterized in that: The bottom of the filter bag (2) bulges downward to form a spherical surface.