Solid trioxymethylene dissolving and recycling device
Through the dissolution tank and recycling tank device, the solid triformaldehyde is dissolved by heating with hot water and steam, combined with stirring and filter, the problem of unstable treatment of triformaldehyde solid materials is solved, efficient recycling and reuse is achieved, and production costs are reduced.
Patent Information
- Application Number
- CN202422402035.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the prior art, the treatment method of solid material of the tereformaldehyde results in unstable combustion of the boiler, loss of materials, and unenvironmental protection, and ineffective recycling.
The dissolution tank and recycling tank device are used to heat the dissolved solid paraformaldehyde by heating with hot water and steam, combined with a stirrer and filter to ensure dissolution effect and safety, and to treat volatile gases through venting and exhaust gas pipelines to achieve self-flow recovery.
It improves the recovery rate of paraformaldehyde, prevents crystallization blockage, ensures production stability and safety, realizes the reuse of solid waste, and reduces production costs.
Smart Images
Figure CN223127752U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of solid material recycling equipment, and particularly relates to a solid trioxymethylene dissolution and recovery device. Background Art
[0002] At present, in the production process of trioxymethylene in China, a part of solid trioxymethylene material will be generated. The existing treatment method for solid materials is mainly to crush and then mix and burn in raw coal. The disadvantages of this method are that the mixing with raw coal is uneven, which affects the combustion in the boiler furnace, and there will also be uneven crushing, and large pieces of materials will block the coal feeder, resulting in coal cut-off in the boiler, causing unstable working conditions, material loss, and being less environmentally friendly and economical. Summary of the Invention
[0003] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide a solid trioxymethylene dissolution and recovery device.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A solid trioxymethylene dissolution and recovery device includes a dissolution tank and a recovery tank. There is a feeding port on the upper end cover of the dissolution tank. A stirrer is also installed on the upper end cover, and an air vent pipe is also installed on the upper end cover. A liquid level gauge, a pressure gauge, and a thermometer are installed on the dissolution tank. A hot water pipe and a steam pipe are also connected to the dissolution tank. A drain pipe is connected to the bottom of the dissolution tank, and a discharge pipe is connected to the lower part of the dissolution tank. The other end of the discharge pipe is connected to the top of the recovery tank. An exhaust gas pipe is connected to the upper part of the recovery tank. A transfer pump is also included, and the inlet pipe of the transfer pump leads into the recovery tank.
[0006] A filter is installed on the discharge pipe, and ball valves are provided before and after the filter.
[0007] The other end of the air vent pipe communicates with an exhaust gas recovery tower, and the other end of the exhaust gas pipe also communicates with the exhaust gas recovery tower.
[0008] The liquid level gauge is a magnetic flap liquid level gauge.
[0009] The motor of the stirrer is installed on the upper end cover, and the stirring blades of the stirrer are located inside the dissolution tank.
[0010] The height of the connection end of the discharge pipe with the dissolution tank is higher than the height of the connection end of the discharge pipe with the recovery tank.
[0011] Compared with the prior art, the advantages of the present utility model are as follows: (1) It uses the surplus hot water in production at an appropriate temperature for dissolution, with a high recovery rate. (2) It uses steam heating, which can maintain the temperature of the dissolution tank and prevent crystallization blockage. (3) It uses a stirring device, which improves the dissolution effect and efficiency. (4) A filter is provided at the discharge, which can prevent the impurity components of high-melting-point polymers from entering the production system and ensure stable production. (5) A vent pipe, a pressure gauge, and a thermometer are provided, which can prevent over-temperature and over-pressure, and the volatile gas during the dissolution process enters the waste gas recovery tower, ensuring safety and environmental protection. (6) The recovery tank can use the original underground tank of the device and enter the system by self-flow, which is simple and energy-saving. The present utility model is convenient to use and operate, has a simple process flow, realizes the reuse of solid waste that could not be processed and utilized before, saves production costs, and improves production safety. Brief Description of the Drawings
[0012] Figure 1 It is a schematic structural diagram of the present utility model.
[0013] In the figure: 1 - dissolution tank, 2 - recovery tank, 3 - stirrer, 4 - feeding port, 5 - vent pipe, 6 - liquid level gauge, 7 - pressure gauge, 8 - thermometer, 9 - hot water pipe, 10 - steam pipe, 11 - discharge pipe, 12 - drain pipe, 13 - inlet pipe, 14 - outlet pipe, 15 - transfer pump, 16 - waste gas pipe, 17 - filter, 18 - waste gas recovery tower. Detailed Description of the Embodiment
[0014] The present utility model will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not restrictive, and the protection scope of the present utility model cannot be limited thereby.
[0015] As Figure 1 shown, a solid paraformaldehyde dissolution and recovery device includes a dissolution tank 1 and a recovery tank 2. There is a feeding port 4 on the upper cover of the dissolution tank 2, and a stirrer 3 is also installed on the upper cover. The motor of the stirrer 3 is installed on the upper cover, and the stirring blades of the stirrer 3 are located inside the dissolution tank. A vent pipe 5 is also installed on the upper cover, and the other end of the vent pipe 5 communicates with the waste gas recovery tower 18. A liquid level gauge 6, a pressure gauge 7, and a thermometer 8 are installed on the dissolution tank 1. The dissolution tank 1 is also connected with a hot water pipe 9 and a steam pipe 10. The bottom of the dissolution tank 1 is connected with a drain pipe 12, and the lower part of the dissolution tank 1 is connected with a discharge pipe 11. The other end of the discharge pipe 11 is connected to the top of the recovery tank 2. The upper part of the recovery tank 2 is connected with a waste gas pipe 16, and the other end of the waste gas pipe 16 also communicates with the waste gas recovery tower 18. It also includes a transfer pump 15. The inlet pipe 13 of the transfer pump 15 leads into the recovery tank 2, and the outlet pipe 14 of the transfer pump 15 communicates with the recovery system.
[0016] A filter 17 is installed on the discharge pipe 11, and ball valves are provided before and after the filter 17 to facilitate the cleaning of the filter.
[0017] Valves corresponding to their functions are installed on the vent pipe 5, hot water pipe 9, steam pipe 10, drain pipe 12, inlet pipe 13, outlet pipe 14 and exhaust gas pipe 16.
[0018] The height of the connection end of the discharge pipe 11 with the dissolution tank 1 is higher than the height of the connection end of the discharge pipe 11 with the recovery tank 2. The paraformaldehyde solution in the dissolution tank can flow into the recovery tank through the discharge pipe in a gravity flow manner.
[0019] In actual production, the liquid level gauge 6 adopts a magnetic flap liquid level gauge. The size of the feeding port 4 is DN500, the size of the vent pipe 5 is DN50, the size of the hot water pipe 9 is DN25, and the hot water temperature is 98 °C; the size of the steam pipe 10 is DN20, the steam pressure is 0.15 MPa, and the temperature is 128 °C. The size of the discharge pipe 11 is DN50, the filter is 40 mesh, the flow rate of the transfer pump 15 is 3 m³ / h, the size of the inlet pipe 13 is DN50, and the size of the outlet pipe 14 is DN40. The size of the exhaust gas pipe 16 is DN50. The materials of the dissolution tank and the recovery tank are all made of 304 stainless steel. The volume of the dissolution tank is 2 m³, and the volume of the recovery tank is 20 m³.
[0020] The working process of the present utility model is as follows: First, open the valves of the vent pipe 5 and the exhaust gas pipe 16 in advance, and open the valve of the steam pipe 10 to preheat the dissolution tank 1. When the thermometer 8 shows above 50 °C, put solid paraformaldehyde into the dissolution tank 1 from the feeding port 4. After a certain amount of solid paraformaldehyde is stored in the dissolution tank 1, open the valve of the hot water pipe 9 to add hot water. When the hot water overflows the solid paraformaldehyde in the dissolution tank 1, stop adding water. Then, open the valve of the steam pipe 10 wider to heat the hot water. When the thermometer 8 shows 90 °C, start the stirrer 3 to stir and dissolve the solid paraformaldehyde.
[0021] After the solid paraformaldehyde in the dissolution tank 1 is completely dissolved, close the stirrer 3, open the valve of the discharge pipe 11, and let the liquid paraformaldehyde in the dissolution tank 1 flow into the recovery tank 2 by pressure difference. When the liquid level in the recovery tank 2 reaches 50%, open the valve of the inlet pipe 13, start the transfer pump 15, and send the paraformaldehyde aqueous solution into the recovery system for recovery through the outlet pipe 14. The insoluble matter at the bottom of the dissolution tank 1 is drained through the drain pipe 12. During the draining process, open the valve of the hot water pipe 9 to wash the insoluble matter in the dissolution tank 1 until it is washed clean.
[0022] When starting to dissolve solid trioxane, the valves of the vent pipe 5 and the waste gas pipe 16 must be opened in advance. After the agitator 3 is started, the operator should constantly observe the liquid level gauge 6, the pressure gauge 7, and the thermometer 8 to prevent dangers such as material overflow and personnel scalding caused by too high a liquid level when the dissolution tank 1 is heated by steam, agitated by the agitator 3, and flows by gravity into the recovery tank 2.
[0023] The utility model puts solid trioxane waste into a dissolution tank for heating and dissolution, and then recovers the dissolved liquid trioxane through a recovery tank, achieving a recovery method for reusing waste solid trioxane. Compared with the prior art, the advantages of the utility model are as follows: (1) Using the surplus hot water in production at an appropriate temperature for dissolution, with a high recovery rate. (2) Using steam heating can maintain the temperature of the dissolution tank and prevent crystallization blockage. (3) Using a stirring device improves the dissolution effect and efficiency. (4) A filter is set at the discharge port to prevent impurity components of high-melting-point polymers from entering the production system and ensure stable production. (5) Setting a vent pipe, a pressure gauge, and a thermometer can prevent over-temperature and over-pressure, and the volatile gas during the dissolution process enters the waste gas recovery tower, ensuring safety and environmental protection. (6) The recovery tank can use the original underground tank of the device and enter through gravity flow, which is simple and energy-saving.
Claims
1. A solid paraformaldehyde dissolution and recovery device, characterized in that: It includes a dissolution tank and a recovery tank. There is a feeding port on the upper cover of the dissolution tank. A stirrer is also installed on the upper cover, and an air vent pipe is also installed on the upper cover. A liquid level gauge, a pressure gauge and a thermometer are installed on the dissolution tank. A hot water pipe and a steam pipe are also connected to the dissolution tank. A drain pipe is connected to the bottom of the dissolution tank, and a discharge pipe is connected to the lower part of the dissolution tank. The other end of the discharge pipe is connected to the top of the recovery tank. An exhaust gas pipe is connected to the upper part of the recovery tank. A transfer pump is also included, and the inlet pipe of the transfer pump leads into the recovery tank.
2. The solid paraformaldehyde dissolution and recovery device according to claim 1, characterized in that: A filter is installed on the discharge pipe, and ball valves are provided before and after the filter.
3. The solid paraformaldehyde dissolving and recycling device according to claim 1, characterized in that: The other end of the air vent pipe communicates with an exhaust gas recovery tower, and the other end of the exhaust gas pipe also communicates with the exhaust gas recovery tower.
4. The solid paraformaldehyde dissolving and recycling device according to claim 1, characterized in that: The liquid level gauge is a magnetic flap liquid level gauge.
5. The solid paraformaldehyde dissolving and recycling device according to claim 1, wherein: The motor of the stirrer is installed on the upper cover, and the stirring blades of the stirrer are located inside the dissolution tank.
6. The solid paraformaldehyde dissolving and recycling device according to claim 1, wherein: The height of the connection end of the discharge pipe with the dissolution tank is higher than the height of the connection end of the discharge pipe with the recovery tank.