Hazardous chemical residual liquid recovery safety management and control device for multiple sets of devices

Abstract

The utility model discloses a multi-device hazardous chemical substance residual liquid recovery safety control device, which is characterized in that a residual liquid extraction pump is arranged at an outlet of a residual liquid intermediate storage tank, and residual liquid is conveyed to a terminal residual liquid storage tank through a guide pipe. A feeding control stop valve is arranged at an inlet of the residual liquid intermediate storage tank, and the residual liquid extraction pump is connected to the residual liquid discharging switch valve and the residual liquid circulating switch valve through guide pipes, so that the residual liquid is discharged or circulated back to the intermediate storage tank. And the terminal residual liquid extraction pump is connected to the terminal residual liquid circulating switch valve and the terminal residual liquid conveying switch valve through guide pipes, so that the residual liquid is circulated or conveyed to a subsequent working section. The residual liquid intermediate storage tank and the terminal residual liquid storage tank are respectively provided with a liquid level meter with an alarm function, and all key devices are connected to an upper computer through signal lines, so that automatic monitoring is realized. According to the device, single-tank independent storage can be achieved, quantitative and automatic recycling to a designated storage tank can be achieved, hazardous chemicals are safely and effectively controlled by automatically controlling the liquid level while feeding and discharging are conducted, and preparation for sufficient mixing is made for use in subsequent procedures.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of chemical production technology, especially relates to a kind of multi-set device dangerous chemical residual liquid recovery safety management and control device. BACKGROUND

[0002] In the multi-device chemical production process, the recovery and utilization rate of residual dangerous chemicals after chemical reaction is an important means to save raw material consumption cost, and effectively improves the working environment. Especially in the case of large-scale simultaneous production and storage in multiple workshops, how to accurately and effectively recover the residual liquid (hereinafter referred to as residual liquid) in the dangerous chemicals and make full use of the recovered residual liquid to reduce the impact of residual liquid on subsequent processes, not only relates to safe recovery, but also effectively controls raw material cost, and plays a key role in downstream product quality.

[0003] The existing chemical production technology has realized the separation of residual liquid in different workshop chemical reaction products by special process, and sets up intermediate storage tank for storage. Through DCS centralized control system, manual control of pneumatic regulating valve and extraction pump is needed, and residual liquid in intermediate storage tank is transported to terminal storage tank at irregular times for subsequent reaction in workshop. This method is used in large-scale simultaneous production in multiple workshops, which not only consumes additional operating effort, but also on the one hand, it is easy to cause liquid level overflow, tank overflow and other accidents due to manual control failure, on the other hand, manual operation and lucky make residual liquid usage unstable, water accumulation, which is not conducive to accurate recovery of residual monomer, process safety risk is increased, and material utilization rate is reduced. Therefore, in order to improve the utilization rate of raw materials, it is necessary to explore a scientific and effective management and control device to realize the secondary safe recovery of chemical residual liquid in the case of simultaneous production in multiple workshops. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problems in the background art, and provides a kind of multi-set device dangerous chemical residual liquid recovery safety management and control device, residual monomer in multiple chemical production lines is separated by special process in the device, and intermediate storage tank is set up for storage, single tank is realized, and residual liquid is recovered to specified storage tank quantitatively and automatically, liquid level is automatically controlled by feeding and discharging, dangerous chemicals are safely and effectively controlled, and preparation for subsequent process is made.

[0005] In order to realize the utility model, the utility model discloses a kind of multi-set device dangerous chemical residual liquid recovery safety management and control device, including residual liquid intermediate storage tank and terminal residual liquid storage tank;Residual liquid extraction pump is arranged at the outlet of residual liquid intermediate storage tank, and residual liquid extraction pump is connected to the inlet of terminal residual liquid storage tank by conduit;Terminal residual liquid extraction pump is arranged at the outlet of terminal residual liquid storage tank.

[0006] Further, feed control cut-off valve is arranged at the inlet of residual liquid intermediate storage tank.

[0007] Further, the residual liquid extraction pump is connected to the residual liquid discharge switch valve and the residual liquid circulation switch valve through a pipeline, the residual liquid discharge switch valve is connected to the terminal residual liquid tank inlet through a pipeline, and the residual liquid circulation switch valve is connected to the circulation inlet of the residual liquid intermediate tank through a pipeline.

[0008] Further, the terminal residual liquid extraction pump is connected to the terminal residual liquid circulation switch valve and the terminal residual liquid delivery switch valve through a pipeline, the terminal residual liquid circulation switch valve is connected to the circulation inlet of the terminal residual liquid tank through a pipeline, and the terminal residual liquid delivery switch valve is connected to the subsequent section equipment inlet through a pipeline.

[0009] Further, the residual liquid intermediate tank is provided with an intermediate tank liquid level meter with an alarm function, and the terminal residual liquid tank is provided with a terminal tank liquid level meter with an alarm function.

[0010] Further, the residual liquid discharge switch valve, the residual liquid extraction pump, the residual liquid circulation switch valve, the feed control cut-off valve and the intermediate tank liquid level meter of the residual liquid intermediate tank, and the terminal residual liquid circulation switch valve, the terminal residual liquid delivery switch valve, the terminal tank liquid level meter and the terminal residual liquid extraction pump of the terminal residual liquid tank are connected to the upper computer through a signal line.

[0011] Further, the device is provided with n sets of residual liquid intermediate tanks, and n sets of residual liquid discharge switch valves, residual liquid extraction pumps, residual liquid circulation switch valves, feed control cut-off valves and intermediate tank liquid level meters corresponding to the residual liquid intermediate tanks.

[0012] Further, the residual liquid extraction pump and the terminal residual liquid extraction pump are provided in a one-open-one-backup mode.

[0013] Compared with the prior art, the significant progress of the utility model lies in that: 1) the method can reduce the influence of water accumulation caused by long-time residence in the system by accurately controlling the recovered residual liquid and the residence time of the residual liquid in the system, and can improve the process operation safety; 2) the traditional way is to manually monitor the system liquid level and manually adjust the valve opening and the delivery pump opening, and through the method, automatic delivery and automatic circulation between the residual liquid intermediate tank and the terminal tank can be realized, and the probability of abnormality caused by personnel monitoring failure can be minimized; 3) the method is suitable for simultaneous production of large and small scales in multiple workshops; 4) the use of the method can improve the workshop production stability and reduce the cost of hazardous chemical product use.

[0014] In order to more clearly illustrate the functional characteristics and structural parameters of the utility model, the following further illustrates the utility model in combination with the drawings and the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0016] Figure 1 It is a kind of multi-set device dangerous chemical residual liquid recovery safety control device overall structure schematic view.

[0017] In the drawing, reference numerals are: 1-residual liquid discharge switch valve, 2-residual liquid intermediate storage tank, 3-residual liquid extraction pump, 4-residual liquid circulation switch valve, 5-n residual liquid intermediate storage tank, 6-terminal residual liquid circulation switch valve, 7-terminal residual liquid delivery switch valve, 8-terminal residual liquid storage tank, 9-terminal storage tank liquid level meter, 10-feed control cut-off valve, 11-n feed control cut-off valve, 12-terminal residual liquid extraction pump, 13-n residual liquid extraction pump, 14-n residual liquid circulation switch valve, 15-n residual liquid discharge switch valve, 16-intermediate storage tank liquid level meter, 17-n intermediate storage tank liquid level meter. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0019] As shown in Figure 1 A kind of multi-set device dangerous chemical residual liquid recovery safety control device, it is characterized in that, including residual liquid intermediate storage tank 2 and terminal residual liquid storage tank 8;Residual liquid intermediate storage tank 2 outlet is provided with residual liquid extraction pump 3, residual liquid extraction pump 3 is connected to terminal residual liquid storage tank 8 inlet by conduit;Terminal residual liquid storage tank 8 outlet is provided with terminal residual liquid extraction pump 12, residual liquid intermediate storage tank 2 inlet is provided with feed control cut-off valve 10.Residual liquid in residual liquid intermediate storage tank 2 is transported by residual liquid extraction pump 3, then after feed control cut-off valve 10, residual liquid is collected to terminal residual liquid storage tank 8

[0020] Specifically, the residual liquid extraction pump 3 is connected to the residual liquid discharge switch valve 1 and the residual liquid circulation switch valve 4 through a conduit, the residual liquid discharge switch valve 1 is connected to the terminal residual liquid storage tank 8 inlet through a conduit, and the residual liquid circulation switch valve 4 is connected to the circulation inlet of the residual liquid intermediate storage tank 2 through a conduit. The terminal residual liquid extraction pump 12 is connected to the terminal residual liquid circulation switch valve 6 and the terminal residual liquid delivery switch valve 7 through a conduit; the terminal residual liquid circulation switch valve 6 is connected to the circulation inlet of the terminal residual liquid storage tank 8 through a conduit, and the terminal residual liquid delivery switch valve 7 is connected to the subsequent process equipment inlet through a conduit. The residual liquid intermediate storage tank 2 is provided with an intermediate storage tank liquid level meter 16 with an alarm function, and the terminal residual liquid storage tank 8 is provided with a terminal storage tank liquid level meter 9 with an alarm function.

[0021] Specifically, the residual liquid intermediate storage tank 2 is provided with the residual liquid discharge switch valve 1, the residual liquid extraction pump 3, the residual liquid circulation switch valve 4, the feed control cut-off valve 10 and the intermediate storage tank liquid level meter 16, and the terminal residual liquid storage tank 8 is provided with the terminal residual liquid circulation switch valve 6, the terminal residual liquid delivery switch valve 7, the terminal storage tank liquid level meter 9 and the terminal residual liquid extraction pump 12, which are all connected to the upper computer through a signal line.

[0022] Specifically, the intermediate storage tank liquid level meter 16 is provided with high and low liquid level alarms, and the interlocking signal is set through the upper computer. When the liquid level of the residual liquid intermediate storage tank 2 reaches the high limit or the low limit, the feed control cut-off valve 10 is automatically closed (opened), the residual liquid extraction pump 3 is automatically opened (closed), and the delivery of residual liquid to the terminal residual liquid storage tank 8 is started (stopped). The terminal storage tank liquid level meter 9 is provided with high and low liquid level alarms, and the interlocking signal is set through the upper computer. When the terminal residual liquid storage tank 8 reaches the high liquid level, the residual liquid extraction pump 3 is automatically stopped and the residual liquid discharge switch valve 1 is closed; when the liquid level is low, the residual liquid extraction pump 3 is automatically started, and the residual liquid discharge switch valve 1 is opened.

[0023] Specifically, during the process of rising from low to high of the liquid level of the residual liquid intermediate storage tank 2, when the liquid level of the intermediate storage tank liquid level meter 16 does not reach the delivery liquid level, the residual liquid extraction pump 3 is automatically started, and the residual liquid circulation switch valve 4 is opened at the same time, so as to fully mix the residual liquid. When the storage liquid level of the terminal residual liquid storage tank 8 reaches the amount used by the subsequent process, the terminal residual liquid extraction pump 12 and the terminal residual liquid circulation switch valve 6 are automatically opened, and automatic circulation starts, the residual liquid is fully mixed, and the terminal residual liquid delivery switch valve 7 is opened for use by the subsequent process. On the basis of the material balance control of the front-end system, the liquid levels of the residual liquid intermediate storage tank 2 and the terminal residual liquid storage tank 8 can be used up, and the terminal residual liquid extraction pump 12 and the terminal residual liquid circulation switch valve 6 are automatically opened, and automatic circulation starts.

[0024] Specifically, the device is provided with n sets of residual liquid intermediate storage tanks, and n sets of residual liquid intermediate storage tank corresponding residual liquid discharge switch valves, residual liquid extraction pumps, residual liquid circulation switch valves, feed control cut-off valves and intermediate storage tank liquid level meters. Figure 1As shown, the nth residual liquid intermediate tank 5 is provided with an nth residual liquid extraction pump 13 at the outlet, the nth residual liquid extraction pump 13 is connected to the terminal residual liquid tank 8 inlet through a conduit; the nth residual liquid intermediate tank 5 is provided with an nth feed control cut-off valve 11 at the inlet. The nth residual liquid extraction pump 13 is connected to the nth residual liquid discharge on-off valve 15 and the nth residual liquid circulation on-off valve 14 through a conduit, the nth residual liquid discharge on-off valve 15 is connected to the terminal residual liquid tank 8 inlet through a conduit, and the nth residual liquid circulation on-off valve 14 is connected to the circulation inlet of the nth residual liquid intermediate tank 5 through a conduit. The nth residual liquid intermediate tank 5 is provided with an nth intermediate tank liquid level meter 17 with an alarm function.

[0025] Specifically, the residual liquid extraction pump 3 and the terminal residual liquid extraction pump 12 are both provided with one open and one standby.

[0026] Specifically, the actions of all on-off valves, pumps and liquid levels are realized through the upper computer interlocking signals, the related upper computer interlocking signal technology adopted is prior art, and the present application only claims to protect a new practical technical solution suitable for the shape, structure or combination of the multi-set device hazardous chemical residual liquid recovery safety control device.

[0027] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-set hazardous chemical residue recovery safety management device, characterized in that, It includes an intermediate residual liquid storage tank (2) and a terminal residual liquid storage tank (8); a residual liquid extraction pump (3) is provided at the outlet of the intermediate residual liquid storage tank (2), and the residual liquid extraction pump (3) is connected to the inlet of the terminal residual liquid storage tank (8) through a conduit; a terminal residual liquid extraction pump (12) is provided at the outlet of the terminal residual liquid storage tank (8).

2. The multi-set hazardous chemical residue recovery safety control device according to claim 1, characterized in that, The intermediate storage tank (2) for residual liquid is equipped with a feed control shut-off valve (10) at the inlet.

3. The multi-set hazardous chemical residue recovery safety control device according to claim 1, characterized in that, The residual liquid extraction pump (3) is connected to the residual liquid discharge switch valve (1) and the residual liquid circulation switch valve (4) through a conduit. The residual liquid discharge switch valve (1) is connected to the inlet of the terminal residual liquid storage tank (8) through a conduit. The residual liquid circulation switch valve (4) is connected to the circulation inlet of the intermediate residual liquid storage tank (2) through a conduit.

4. The multi-set hazardous chemical residue recovery safety control device according to claim 1, characterized in that, The terminal residual liquid extraction pump (12) is connected to the terminal residual liquid circulation switch valve (6) and the terminal residual liquid delivery switch valve (7) through a conduit; the terminal residual liquid circulation switch valve (6) is connected to the circulation inlet of the terminal residual liquid storage tank (8) through a conduit, and the terminal residual liquid delivery switch valve (7) is connected to the inlet of the subsequent process equipment through a conduit.

5. A multi-set hazardous chemical residue recovery safety control device according to claim 1, characterized in that, The intermediate residual liquid storage tank (2) is equipped with an intermediate storage tank level gauge (16) with an alarm function, and the terminal residual liquid storage tank (8) is equipped with a terminal storage tank level gauge (9) with an alarm function.

6. The multi-set hazardous chemical residue recovery safety control device according to claim 1, characterized in that, The residual liquid discharge switch valve (1), residual liquid extraction pump (3), residual liquid circulation switch valve (4), feed control shut-off valve (10), and intermediate storage tank level gauge (16) of the residual liquid intermediate storage tank (2), as well as the terminal residual liquid circulation switch valve (6), terminal residual liquid conveying switch valve (7), terminal storage tank level gauge (9), and terminal residual liquid extraction pump (12) of the terminal residual liquid storage tank (8) are all connected to the host computer via signal lines.

7. A multi-set hazardous chemical residue recovery safety control device according to claim 6, characterized in that, The device is equipped with n sets of intermediate residual liquid storage tanks (2), and n sets of corresponding intermediate residual liquid storage tanks (2) with residual liquid discharge switch valve (1), residual liquid extraction pump (3), residual liquid circulation switch valve (4), feed control cut-off valve (10) and intermediate storage tank level gauge (16).

8. A multi-set hazardous chemical residue recovery safety control device according to claim 1, characterized in that, Both the residual liquid extraction pump (3) and the terminal residual liquid extraction pump (12) are configured with one in operation and one on standby.

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