Automatic ammonium sulfate solution system

Abstract

The utility model discloses automatic liquid supplementing system of ammonium sulfate, including the saturator, full flow tank and circulating pump of cyclic connection, and full flow tank is connected with mother liquor storage tank through upper reflux pipe, and full flow tank top one side is connected with the buffer tank, and mother liquor storage tank is connected with buffer tank through liquid supplementing pump, liquid supplementing pipe and realizes to full flow tank quick liquid supplementing, and full flow tank is automatically supplemented with liquid level control system, and the utility model discloses through setting buffer tank, liquid supplementing pump and liquid level control system realizes the automatic monitoring and accurate liquid supplementing of full flow tank liquid level, has the advantages of can automatically control full flow tank liquid level, avoids the liquid level fluctuation caused by manual operation, ensures the stable operation of system, reduces sulfuric acid mother liquor waste, improves the continuity and reliability of ammonium sulfate production.

Description

Technical Field

[0001] This utility model relates to the field of automatic ammonium sulfate replenishment, and specifically to an automatic ammonium sulfate replenishment system. Background Technology

[0002] In coal gas treatment processes, ammonia removal is commonly achieved using the saturator method. This method involves using a mother liquor circulation pump in the saturator's pre-chamber to circulate the incoming coal gas in a large-scale cycle, continuously spraying sulfuric acid mother liquor to produce ammonium sulfate. When the concentration of ammonium sulfate mother liquor in the saturator reaches its solubility limit, ammonium sulfate crystals begin to precipitate. At this point, the mother liquor overflowing from the full-flow outlet in the middle of the saturator flows into the liquid seal tank of the full-flow tank, then overflows into the main body of the full-flow tank, and is then pumped by a circulation pump to the saturator's rear chamber for small-scale circulation spraying, thereby ensuring that the outlet coal gas meets the ammonia removal standards. Simultaneously, a mother liquor storage tank is responsible for replenishing the system with sulfuric acid used for ammonia removal to maintain the stability of the mother liquor composition (e.g., ...). Figure 2 (As shown).

[0003] However, the current system has significant drawbacks during operation. When the liquid level in the full-flow tank drops due to consumption, operators must rely on their experience to judge and manually open the gate valve on the mother liquor storage tank's replenishment pipe to replenish the liquid. This manual intervention method is highly susceptible to improper timing of replenishment: untimely replenishment will cause the liquid level in the full-flow tank to be too low, damaging the liquid seal effect in the saturator, causing an abnormal increase in system resistance, and even leading to equipment instability or shutdown risks; while excessive replenishment will cause mother liquor overflow, not only wasting sulfuric acid mother liquor and increasing production costs, but also causing drastic fluctuations in liquid level, interfering with the circulation balance between the front and rear chambers of the saturator, and affecting the uniformity of ammonium sulfate crystallization and deammoniation efficiency. In addition, manual operation is highly subjective, making it difficult to achieve precise control of the replenishment process. Frequent liquid level fluctuations during long-term operation may also accelerate equipment corrosion, reduce the overall reliability of the system, and restrict the continuity and stability of ammonium sulfate production. Utility Model Content

[0004] This utility model is achieved through the following technical solution:

[0005] The ammonium sulfate automatic replenishment system includes a saturator, a full-flow tank, and a circulating pump. The full-flow tank is connected to a mother liquor storage tank via an upper return pipe. A buffer tank is connected to one side of the top of the full-flow tank. The mother liquor storage tank is connected to the buffer tank via a replenishment pump and a replenishment pipe to achieve rapid replenishment of the full-flow tank. The full-flow tank is automatically replenished through a liquid level control system.

[0006] Furthermore, this application also proposes that the buffer tank is connected to the outlet of the replenishment pipe, and the bottom of the buffer tank is connected to the full flow tank through a pre-replenishment pipe.

[0007] Furthermore, this application also proposes that the liquid level control system includes a radar liquid level gauge installed on the top of the full flow tank, the radar liquid level gauge being electrically connected to a controller, and the controller being electrically connected to the replenishment pump and the flow control valve at its outlet.

[0008] Furthermore, this application also proposes that the controller be electrically connected to the control valve installed on the pre-filled pipe.

[0009] Furthermore, this application also proposes a reflux pipe connection between the buffer tank and the mother liquor storage tank.

[0010] Compared with existing technologies, the advantages of this utility model are: by setting up a buffer tank, a replenishment pump and a liquid level control system, this utility model realizes automatic monitoring and precise replenishment of the liquid level in the full-flow tank. It has the advantages of automatically controlling the liquid level in the full-flow tank, avoiding liquid level fluctuations caused by manual operation, ensuring stable system operation, reducing waste of sulfuric acid mother liquor, and improving the continuity and reliability of ammonium sulfate production. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the system of this utility model;

[0012] Figure 2 This is a schematic diagram of the prior art of this utility model;

[0013] In the diagram: saturator 1, full flow tank 2, buffer tank 21, circulating pump 3, mother liquor storage tank 4, replenishment pump 5, replenishment pipe 6, flow control valve 7, pre-replenishment pipe 8, controller 9, radar level gauge 10. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0015] like Figure 1 As shown in the embodiment of this application, an automatic ammonium sulfate replenishment system is proposed, including a saturator 1, a full-flow tank 2, and a circulating pump 3 connected in a circulation manner. The full-flow tank 2 is connected to a mother liquor storage tank 4 through an upper return pipe. A buffer tank 21 is connected to one side of the top of the full-flow tank 2. The mother liquor storage tank 4 is connected to the buffer tank 21 through a replenishment pump 5 and a replenishment pipe 6 to realize rapid replenishment of the full-flow tank 2. The full-flow tank 2 is automatically replenished through a liquid level control system.

[0016] The innovation of this application lies in the integration of a buffer tank and an automatic level control mechanism, which enables precise adjustment of the full-flow tank level and effectively overcomes the operational defects caused by reliance on manual replenishment. Specifically, the buffer tank, acting as an intermediate buffer, significantly reduces the risk of sudden changes in system resistance caused by direct impact of the mother liquor on the full-flow tank. The level control system automatically triggers replenishment operations based on real-time monitored full-flow tank level data, eliminating errors from manual judgment and ensuring the accuracy of replenishment timing. This maintains stable system operation and reduces mother liquor consumption and abnormal resistance issues.

[0017] The ammonium sulfate automatic replenishment system achieves precise adjustment of the full-flow tank level by integrating a buffer tank and a level control mechanism. Specifically, a circulation connection is formed between the saturator 1, the full-flow tank 2, and the circulation pump 3. The full-flow tank 2 is connected to the mother liquor storage tank 4 through an upper return pipe, thereby ensuring that the mother liquor can be recycled within the system. Furthermore, a buffer tank 21 is installed on one side of the top of the full-flow tank 2. The mother liquor storage tank 4 is connected to the buffer tank 21 through a replenishment pump 5 and a replenishment pipe 6 to achieve rapid replenishment of the full-flow tank 2. The buffer tank 21, as an intermediate buffer, can temporarily store the mother liquor flowing in during the replenishment process and smoothly deliver it to the full-flow tank 2 through a pre-replenishment pipe, avoiding the problem of drastic level fluctuations caused by direct injection.

[0018] The liquid level control system plays a crucial role in this technical solution. It monitors the liquid level data in real time using a radar level gauge installed at the top of the full-flow tank 2 and transmits the monitoring results to the controller. Based on the received liquid level information, the controller automatically triggers the operation of the replenishment pump 5 and the flow control valve, thereby automating the replenishment process. This allows for precise control of the replenishment timing, eliminating errors caused by manual judgment and effectively solving the problems of untimely or excessive replenishment. Furthermore, the controller can also adjust the control valve on the pre-replenishment pipe in a coordinated manner, further optimizing the stability and controllability of the replenishment process.

[0019] This application further proposes that the buffer tank 21 is connected to the outlet of the replenishment pipe 6, and the bottom of the buffer tank 21 is connected to the full flow tank 2 through the pre-replenishment pipe 8.

[0020] By directly connecting the buffer tank 21 to the outlet of the replenishment pipe 6, it is ensured that the mother liquor transported from the mother liquor storage tank 4 via the replenishment pump 5 enters the buffer tank 21 first, rather than directly entering the full-flow tank 2. This design effectively avoids the direct impact of the high-speed flowing mother liquor on the liquid level in the full-flow tank 2. Simultaneously, the design of connecting the bottom of the buffer tank 21 to the full-flow tank 2 via the pre-replenishment pipe 8 allows the mother liquor to flow into the full-flow tank 2 at a relatively stable speed. This structural combination fully utilizes the natural adjustment function of gravity and pipe resistance, achieving a smooth transition in the replenishment process. Furthermore, by rationally setting the diameter and length of the pre-replenishment pipe 8, the replenishment speed can be further optimized, thereby effectively mitigating the liquid level fluctuation problem caused by excessively rapid replenishment, reducing system resistance and mother liquor waste. Through the above technical solutions, not only is the liquid level fluctuation problem caused by excessively rapid replenishment solved, but the stability and reliability of the entire ammonium sulfate automatic replenishment system are also improved.

[0021] This application further proposes a liquid level control system including a radar level gauge 10 installed on top of the full flow tank 2, the radar level gauge 10 being electrically connected to a controller 9, and the controller 9 being electrically connected to a replenishment pump 5 and a flow control valve 7 at its outlet.

[0022] The radar level gauge 10 is installed on top of the full-flow tank 2. Its non-contact measurement characteristics avoid media interference, ensuring the accuracy and real-time nature of the level data. The electrical connection between the radar level gauge 10 and the controller 9 enables rapid transmission of the level signal, allowing the controller 9 to promptly acquire level information and make corresponding judgments. The connection between the controller 9, the replenishment pump 5, and the flow control valve 7 forms a complete execution loop. Based on the continuous level data provided by the radar level gauge 10, the operating state of the replenishment pump 5 and the opening degree of the flow control valve 7 are dynamically adjusted, thereby achieving precise replenishment control. This closed-loop control mechanism not only solves the problems of untimely or excessive replenishment caused by manual replenishment but also effectively coordinates with the basic systems such as the saturator 1, the full-flow tank 2, and the circulation pump 3, jointly maintaining the stable operation of the entire ammonium sulfate automatic replenishment system, reducing mother liquor waste and operational risks, and improving the system's automation level and reliability.

[0023] This application further proposes an electrical connection between the controller 9 and the control valve installed on the pre-compensation pipe 8.

[0024] Based on the real-time liquid level data of the full-flow tank 2 monitored by the radar level gauge 10, the controller 9 dynamically adjusts the state of the control valve on the pre-replenishment pipe 8. When the liquid level approaches the target range, the controller 9 fine-tunes the control valve on the pre-replenishment pipe 8 to perform micro-replenishment, utilizing the buffering characteristics of the buffer tank 21 to achieve precise and stable liquid level control, reducing frequent start-stop cycles of the main replenishment path. This dynamic linkage mechanism based on liquid level signals transforms pre-replenishment from a passive auxiliary process to an active adjustment mechanism, significantly improving the continuity and accuracy of the replenishment process, thereby effectively suppressing liquid level fluctuations and optimizing system operational stability.

[0025] This application further proposes a reflux pipe connection between the buffer tank 21 and the mother liquor storage tank 4.

[0026] In actual operation, when the replenishment pump 5 starts, the internal pressure of the system changes due to the liquid flow. At this time, the return pipe allows the liquid to be dynamically adjusted between the buffer tank 21, the mother liquor storage tank 4, and the full-flow tank 2. This adjustment mechanism can buffer the pressure shock generated when the replenishment pump 5 starts, avoiding the direct impact of sudden pressure changes in the buffer tank 21 on the liquid level of the full-flow tank 2, thereby ensuring the stable operation of the liquid level control system. In addition, the connection between the buffer tank 21 and the mother liquor storage tank 4 via the return pipe makes the entire replenishment process smoother, thus improving the overall stability of the system.

[0027] The implementation principle of the automatic ammonium sulfate replenishment system in this application embodiment is as follows:

[0028] When the liquid level in the full-flow tank 2 is low (the controller 9 sets the low liquid level to 2 / 3 of the full-flow tank), the radar level gauge 10 transmits the detected low liquid level signal to the controller 9. The controller 9 first controls the control valve installed on the pre-replenishment pipe 8 to open, and the sulfuric acid mother liquor previously stored in the buffer tank 21 is pre-replenished along the pre-replenishment pipe 8, avoiding the problem of violent fluctuations in liquid level caused by direct injection.

[0029] Next, the controller 9 controls the start of the replenishment pump 5 to replenish the mother liquor in the mother liquor storage tank 4 along the replenishment pipe 6 to the buffer tank 21, ensuring continuous replenishment of the buffer tank 21. When the radar level gauge 10 detects the high limit (full flow tank 4 / 5), the controller 9 controls the control valve of the replenishment pump 5 and the pre-replenishment pipe 8 to close, and at the same time adjusts the flow rate of the flow control valve 7 throughout the process, thereby realizing the technical upgrade from "intermittent manual replenishment" to "continuous intelligent replenishment".

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic ammonium sulfate replenishment system, comprising a saturator (1), a full-flow tank (2), and a circulating pump (3) connected in a circulation manner, wherein the full-flow tank (2) is connected to a mother liquor storage tank (4) via an upper return pipe, characterized in that: The top side of the full flow tank (2) is connected to the buffer tank (21). The mother liquor storage tank (4) is connected to the buffer tank (21) through the replenishment pump (5) and the replenishment pipe (6) to realize the rapid replenishment of the full flow tank (2). The full flow tank (2) is automatically replenished by the liquid level control system.

2. The automatic ammonium sulfate replenishment system according to claim 1, characterized in that: The buffer tank (21) is connected to the outlet of the replenishment pipe (6), and the bottom of the buffer tank (21) is connected to the full flow tank (2) through the pre-replenishment pipe (8).

3. The automatic ammonium sulfate replenishment system according to claim 1, characterized in that: The liquid level control system includes a radar level gauge (10) installed on top of the full flow tank (2), the radar level gauge (10) being electrically connected to a controller (9), and the controller (9) being electrically connected to a replenishment pump (5) and a flow control valve (7) at its outlet.

4. The automatic ammonium sulfate replenishment system according to claim 3, characterized in that: The controller (9) is electrically connected to the control valve installed on the pre-compensation pipe (8).

5. The automatic ammonium sulfate replenishment system according to claim 1, characterized in that: The buffer tank (21) is connected to the reflux pipe of the mother liquor storage tank (4).

Images