A residual liquid self-discharging device for acyl chloride feedstock
By designing a storage tank and a self-draining device controlled by a pneumatic ball valve, the problem of easy hydrolysis of acyl chloride materials during storage and discharge was solved, realizing automated discharge and safe production, and extending the service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 平原信达化工股份有限公司
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-10
AI Technical Summary
Acyl chloride materials are prone to hydrolysis during storage and discharge, producing highly corrosive gases that can cause pipeline blockage and equipment corrosion. Furthermore, the reliance on manual operation increases safety risks.
Design a self-draining device that includes a storage tank, a sealing cap, a conical inclined channel, a pneumatic ball valve, and a filter screen to achieve automated and directional discharge of residual liquid. Combined with a pneumatic component to monitor and control the gas pressure inside the tank, it can prevent hydrolysis reactions.
It enables automated and directional discharge of acyl chloride residue, reducing the risk of equipment corrosion and the safety hazards of manual operation, and ensuring production continuity and equipment lifespan.
Smart Images
Figure CN224477346U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of residual liquid self-drainage technology of acyl chloride, specifically to a residual liquid self-drainage device for acyl chloride discharge. Background Technology
[0002] Acyl chloride compounds are widely used in pesticide and polymer synthesis due to their high reactivity in chemical production. However, significant technical problems exist in the storage and discharge of acyl chloride materials: they are prone to hydrolysis upon contact with water, producing highly corrosive hydrogen chloride gas, and the residual liquid easily crystallizes and solidifies, leading to pipeline blockage and equipment corrosion. Traditional storage tanks mostly adopt a bottom straight-through drainage design, requiring frequent valve opening and manual cleaning during residual liquid discharge, which is not only highly dangerous to operate but also has the following drawbacks:
[0003] 1. Dead corners at the bottom of the tank and drainage channels are prone to accumulating residue, requiring regular shutdowns for unblocking, which affects the continuity of production;
[0004] 2. Manual operation of the drain valve can easily damage the seal, allowing air and moisture to seep in, triggering an acyl chloride hydrolysis reaction and exacerbating equipment corrosion;
[0005] 3. Relying on manual intervention in the drainage process increases the risk of contact with toxic and corrosive materials. Utility Model Content
[0006] The purpose of this invention is to provide a residual liquid self-drainage device for acyl chloride discharge, so as to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a residual liquid self-drainage device for discharging acyl chloride, comprising a storage tank, a sealing cap, and a residual liquid self-drainage component, characterized in that: the top of the storage tank is provided with a sealing cap, the surface of the sealing cap is provided with a feed inlet, the bottom of the storage tank is provided with a conical inclined channel, the bottom of the conical inclined channel is connected to a discharge hopper, the bottom of the discharge hopper is connected to a discharge main pipe, and the middle of the discharge main pipe is provided with a residual liquid self-drainage component and a pneumatic component;
[0008] The residual liquid self-draining assembly includes a pneumatic ball valve, a retainer, a filter screen, and a secondary drain pipe. The pneumatic ball valve is located in the middle of the main drain pipe and controls the opening and closing of the main drain pipe. The secondary drain pipe is connected through the ball valve. The other end of the secondary drain pipe is connected through to one side of the drain hopper. Three retainers are symmetrically and annularly fixed on the outside of the drain hopper. The three retainers pass through the outer wall of the drain hopper and are connected to the filter screen installed inside it.
[0009] Preferably, the top of the sealing cap is equipped with a pressure monitor for real-time monitoring of the pressure inside the liquid storage tank.
[0010] Preferably, the pneumatic assembly includes a pressure regulating valve, a gas pipeline, and a gas outlet. One end of the gas pipeline is located on the side of the main drain pipe for connecting to external drying gas. A pressure regulating valve is provided in the middle of the gas pipeline. The ends of the gas pipeline are connected to two pneumatic outlets, and the two pneumatic outlets are connected to the inside of the storage tank.
[0011] Preferably, the bottom of the drain hopper is connected to a manual drain pipe on one side of the main drain pipe, and a manual rotary valve is provided in the middle of the manual drain pipe for opening and closing.
[0012] Preferably, the filter screen is fitted to the inner wall of the drain hopper, and is supported below by a fixture.
[0013] Preferably, one end of the drain pipe extends through one side of the drain hopper into its interior and is located below the filter screen.
[0014] The beneficial effects of this utility model are:
[0015] 1. This utility model utilizes a conical inclined channel and a drainage hopper design, combined with a pneumatic ball valve-controlled residual liquid self-drainage assembly, to achieve automated directional discharge of residual liquid. The pneumatic ball valve operates without manual contact with the material, significantly improving safety. A detachable filter screen inside the drainage hopper intercepts solid crystals, preventing them from entering the main drainage pipe. Simultaneously, the through-flow design of the secondary drainage pipe and the pneumatic ball valve forms a bypass discharge channel. When the main pipe is shut down due to crystallization risk, the secondary pipe can continuously discharge residual liquid, eliminating dead zones at the bottom of the tank, reducing the frequency of downtime for cleaning, and ensuring continuous production.
[0016] 2. The pneumatic component of this utility model injects dry gas into the storage tank through a pressure regulating valve, and works with the pneumatic monitoring device on the top of the sealing cover to regulate the positive pressure environment inside the tank in real time, effectively monitor the hydrolysis reaction of acyl chloride, slow down the generation of corrosive hydrogen chloride gas, and extend the service life of the equipment.
[0017] 3. This utility model, through the design of the main drain pipe (controlled by a pneumatic ball valve) and the manual drain pipe (controlled by manual rotation), enables the automatic discharge mode under normal working conditions; in case of maintenance or power failure, emergency drainage can be carried out through the manual channel, thereby improving the fault tolerance and adaptability of the device. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0019] Figure 2 This is a schematic diagram of the pneumatic component of this utility model.
[0020] Figure 3 This is an internal view of the residual liquid self-drainage component of this utility model.
[0021] Figure 4This is an internal view of the pneumatic ball valve of this utility model.
[0022] The components in the attached diagram are labeled as follows: 1: Storage tank, 2: Sealing cap, 3: Inlet, 4: Conical inclined channel, 5: Drain hopper, 6: Main drain pipe, 7: Pressure monitor, 8: Residual liquid self-draining assembly, 81: Pneumatic ball valve, 82: Fixing device, 83: Filter screen, 84: Sub-drain pipe, 9: Pressure assembly, 91: Pressure regulating valve, 92: Gas pipeline, 93: Gas outlet, 10: Manual drain pipe, 11: Manual rotary valve Detailed Implementation
[0023] Although this invention may be described with respect to a particular application or industry, those skilled in the art will recognize its broader applicability. Those skilled in the art will understand that terms such as "above," "below," "upward," "downward," etc., are used to describe the drawings and not to indicate a limitation on the scope of the invention as defined by the appended claims. Any numerical designations such as "first" or "second" are merely illustrative and not intended to limit the scope of the invention in any way.
[0024] like Figures 1 to 4 As shown, this embodiment provides a residual liquid self-drainage device for discharging acyl chloride: including a storage tank 1, a sealing cover 2, and a residual liquid self-drainage component 8. The storage tank 1 has a cylindrical structure, with a sealing cover 2 on its top. The central surface of the sealing cover 2 has an inlet 3 for injecting acyl chloride solution. A conical inclined channel 4 is welded to the bottom of the storage tank 1. The bottom of the conical inclined channel 4 is connected to a discharge hopper 5. The bottom of the discharge hopper 5 is connected to a discharge main pipe 6 through a flange. The discharge main pipe 6 has a residual liquid self-drainage component 8 and a pneumatic component 9 in the middle.
[0025] The residual liquid self-drainage assembly 8 includes a pneumatic ball valve 81, a retainer 82, a filter screen 83, and a secondary drainage pipe 84. The pneumatic ball valve 81 is located in the middle of the main drainage pipe 6. The ball valve controls the opening and closing of the main drainage pipe 6, achieving automated directional discharge of residual liquid. The pneumatic ball valve 81 can be opened and closed without manual contact with the material, significantly improving safety. The valve body of the pneumatic ball valve 81 is radially welded through the secondary drainage pipe 84. One end of the secondary drainage pipe 84 extends obliquely upwards and connects to the lower part of the side wall of the drainage hopper 5. The secondary drainage pipe 84 can also be... A pneumatic ball valve 81 controls the opening and closing. Three stainless steel retainers 82 are symmetrically and evenly distributed around the outer wall of the drain hopper 5. The three retainers 82 pass through the outer wall of the drain hopper 5 and are connected to the removable filter screen 83 installed inside. The edge of the filter screen 83 is tightly fitted to the inner wall of the drain hopper 5, and the filter screen 83 is supported by the retainers 82 below. The bottom of the drain hopper 5 is located on one side of the drain main pipe 6 and is connected to the manual drain pipe 10. A manual rotary valve 11 is provided in the middle of the manual drain pipe 10 for opening and closing.
[0026] A pressure monitor 7 is installed on the top of the sealing cover 2 to monitor the pressure inside the liquid storage tank 1 in real time. A pressure assembly 9 is installed next to the drain pipe 6. The pressure assembly 9 includes a pressure regulating valve 91, a gas pipeline 92, and a gas outlet 93. One end of the gas pipeline 92 is located on one side of the drain pipe 6 to connect to external drying gas. A pressure regulating valve 91 is installed in the middle of the gas pipeline 92 to control the opening and closing of the gas in the gas pipeline 92. The end of the gas pipeline 92 is connected to two pneumatic outlets 93. The two pneumatic outlets 93 are connected to the inside of the liquid storage tank 1. Drying gas is injected into the liquid storage tank 1 through the pneumatic outlets 93. With the help of the pressure monitor 7 on the top of the sealing cover 2, the positive pressure environment inside the tank is regulated in real time, effectively monitoring the hydrolysis reaction of acyl chloride, slowing down the generation of corrosive hydrogen chloride gas, and extending the service life of the equipment.
[0027] Working principle: During operation, the pneumatic ball valve 81 opens, and the residual acyl chloride liquid flows into the drain hopper 5 by gravity along the conical inclined channel 4. The liquid material penetrates the filter screen 83 and enters the main drain pipe 6 for discharge. The solid crystals are trapped in the hopper by the filter screen 83. When the pressure monitor 7 detects that the pressure inside the tank is less than the threshold, the pneumatic ball valve 81 automatically closes to cut off the main drain pipe 6. Dry gas is injected into the tank through the pressure regulating valve 91. This gas environment prevents moisture from entering, inhibits the hydrolysis reaction of acyl chloride, and reduces the generation of corrosive hydrogen chloride gas. The pressure monitor provides real-time feedback data.
[0028] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.
Claims
1. A residual liquid self-drainage device for discharging acyl chloride, comprising a storage tank (1), a sealing cap (2), and a residual liquid self-drainage assembly (8), characterized in that: The liquid storage tank (1) is provided with a sealing cover (2) at the top, and a feed inlet (3) is provided on the surface of the sealing cover (2). The liquid storage tank (1) is provided with a conical inclined channel (4) at the bottom, and a drain hopper (5) is connected to the bottom of the conical inclined channel (4). A drain main pipe (6) is connected to the bottom of the drain hopper (5). A residual liquid self-drainage component (8) and a pneumatic component (9) are provided in the middle of the drain main pipe (6). The residual liquid self-draining assembly (8) includes a pneumatic ball valve (81), a retainer (82), a filter screen (83), and a drain sub-pipe (84). The pneumatic ball valve (81) is located in the middle of the main drain pipe (6) and controls the opening and closing of the main drain pipe (6) through the ball valve. The drain sub-pipe (84) is connected through the ball valve. The other end of the drain sub-pipe (84) is connected through the drain hopper (5) on one side. Three retainers (82) are symmetrically and annularly fixed on the outside of the drain hopper (5). The three retainers (82) are connected through the outer wall of the drain hopper (5) and the filter screen (83) installed inside it.
2. The residual liquid self-drainage device for discharging acyl chloride as described in claim 1, characterized in that: The sealing cover (2) is equipped with a pressure monitor (7) on top, which is used to monitor the pressure inside the liquid storage tank (1) in real time.
3. The residual liquid self-drainage device for discharging acyl chloride as described in claim 1, characterized in that: The pneumatic assembly (9) includes a pressure regulating valve (91), a gas pipeline (92), and a gas outlet (93). One end of the gas pipeline (92) is located on one side of the main drain pipe (6) for connecting to external drying gas. The gas pipeline (92) is provided with a pressure regulating valve (91) in the middle. The ends of the gas pipeline (92) are connected to two gas outlets (93), and the two gas outlets (93) are connected to the inside of the storage tank (1).
4. The residual liquid self-drainage device for discharging acyl chloride as described in claim 1, characterized in that: The bottom of the drain hopper (5) is connected to the manual drain pipe (10) on one side of the drain main pipe (6), and the manual drain pipe (10) is equipped with a manual rotary valve (11) in the middle for opening and closing.
5. The residual liquid self-drainage device for discharging acyl chloride as described in claim 1, characterized in that: The filter screen (83) is attached to the inner wall of the drain hopper (5) and is supported below by a fixture (82).
6. The residual liquid self-drainage device for discharging acyl chloride as described in claim 1, characterized in that: One end of the drain pipe (84) extends through one side of the drain hopper (5) into its interior and is located below the filter screen (83).