TW202138711A - Tail gas discharge recycling and stabilization control system stably maintaining the pressure and flow rate of the output gas at the exhaust end of a tail gas discharge system - Google Patents

Abstract

The present invention provides a tail gas discharge recycling and stabilization control system, which is mainly used to control the pressure and flow rate of an introduced gas and a driving gas, so that when the gas and the driving gas are mixed and outputted to the exhaust end of a tail gas discharge system, it is controlled to a preset pressure (for example, 1 inch-WC). In addition, when the exhaust end of a tail gas discharge system generates back pressure due to the output gas, an energy-saving module can also adjust the pressure of the driving gas outputted to the suction element according to the sensing result of the back pressure, and further oppose the back pressure, so that the output gas (gas, driving gas, or mixture of the two) at the exhaust end of a tail gas discharge system can still stably maintain the preset pressure of the gas and the gas-guiding element, thereby achieving the effect of stably maintaining the pressure and flow rate of the output gas at the exhaust end of a tail gas discharge system, and at the same time saving the output of the driving gas.

Description

Exhaust emission recovery and stabilization control system

The present invention provides a tail gas emission recovery and stabilization control system, especially a tail gas emission recovery and stabilization control system for stably maintaining the pressure and flow of the tail gas, and at the same time saving the output of the driving gas.

Because the flow, pressure, or composition of the working fluid may directly or indirectly affect the quality or productivity of the product, in order to keep the working fluid operating at a fixed pressure, pressure, flow control or composition analysis related technologies are usually applied Used in industrial processes or machines to effectively control the working fluid.

In order to effectively improve efficiency, safety, output, quality, and ensure environmental protection requirements, a gas analyzer is usually used to analyze the gas components within a target, to further understand the target environmental conditions, and to formulate solutions or improvement methods.

However, because the gas system that is generally analyzed is at room temperature and pressure, and when it is discharged from the gas analysis instrument, a back pressure is likely to occur, so that the gas cannot be effectively discharged and affect the analysis results, so in order to effectively output the Exhaust gas, nowadays, another driving gas (such as an inert gas) is used to assist in outputting the exhaust gas.

However, the prior art is unable to effectively control the flow rate or output of the exhaust gas. Pressure, and when the driving gas is used to assist the exhaust gas output, the driving gas cannot be effectively distributed, resulting in waste or shortage of the driving gas. Therefore, in order to improve the problems of the prior art, there is an urgent need to provide a control system. The control system for the flow and pressure of the tail gas and the effective distribution of the driving gas to save the output of the driving gas.

In order to solve the aforementioned problems, one object of the present invention is to provide a tail gas emission recovery and stabilization control system for controlling the pressure and flow rate of a gas and a driving gas introduced, so that the gas and the driving gas are mixed and output to A preset pressure can be controlled at the exhaust end of an exhaust gas exhaust system. In addition, when the exhaust end of the exhaust exhaust system generates back pressure due to output gas or other factors, the output can be adjusted according to the back pressure sensing result. The pressure of the driving gas of the pumping element further opposes the back pressure, so that the output gas at the outlet end of the exhaust gas exhaust system can still stably maintain the preset pressure of the gas and the air guiding element, so as to achieve a stable maintenance of the exhaust gas discharge The gas outlet of the system outputs the pressure and flow rate of the gas, and at the same time saves the output of the driving gas, thereby improving the problems of the prior art.

In order to achieve the above objective, the present invention discloses a tail gas emission recovery and stabilization control system, which is provided with an exhaust gas inlet end, a driving gas supply end, and an exhaust gas outlet end of the exhaust gas discharge system around the exhaust gas inlet end. It is configured to receive a gas, the driving gas supply end is configured to receive a driving gas, and the exhaust end of the exhaust gas exhaust system is configured to output the gas, the driving gas, or the mixture for use, and the exhaust gas is recovered The voltage stabilization control system includes: a gas guide element connected with the exhaust gas inlet end to receive the gas; a flow stabilization module connected with the gas guide element to receive the gas and control the gas from The output of the flow stabilization module Flow; a suction element connected to the flow stabilization module and the exhaust end of the exhaust gas discharge system, the suction element receives the gas to guide the gas to the exhaust end of the exhaust gas discharge system; a drive air guide An induction element connected to the driving air supply end to receive the driving air; an energy-saving module connected to the driving air guiding element and the drawing element, the energy-saving module receiving the driving air, and Adjust the pressure of the driving gas output to the extraction element according to a back pressure sensing result; an energy-saving pressure control loop, one end of which is connected to the energy-saving pressure compensation module, and the other end is connected to the extraction element and the exhaust gas An exhaust system exhaust pipe between the exhaust ends of the exhaust system, the energy-saving pressure control circuit receives a back pressure input from the exhaust pipe of the exhaust exhaust system, and provides the energy-saving module to sense the back pressure through an energy-saving pressure compensation module , The energy-saving module adjusts the driving air pressure according to the sensing result of the back pressure; and a pressure adjustment and distribution module, which is connected with the driving air guiding element and the energy-saving pressure control circuit, the pressure adjustment and distribution module The group receives the driving air from the driving air guiding element, adjusts the pressure of the driving air to an adjusted pressure, and supplies it to the energy-saving pressure control circuit, so as to drive the air through the energy-saving pressure compensation module through the energy-saving pressure control circuit. The air is guided to the exhaust pipe of the exhaust gas discharge system.

Preferably, the suction element generates a corresponding vacuum pressure according to a pressure provided by the driving gas, and the suction element uses the vacuum pressure to suck the corresponding gas into the suction element, so that the gas and The driving gas is mixed and output to the exhaust end of the exhaust gas discharge system.

Preferably, the exhaust emission recovery and stabilization control system further includes: a safety valve discharge end connected to the air guide element, and a safety discharge valve is provided between the safety valve discharge end and the air guide element, When a gas pressure value of the gas in the safety discharge valve is greater than a discharge threshold value, the safety discharge valve opens the gas to pass through the safety discharge valve so that the gas is discharged through the discharge end of the safety valve. This function is A security mechanism.

Preferably, a steady flow compensation valve is provided between the safety discharge valve and the air guide element, and the steady flow compensation valve is further connected with the pressure adjustment distribution module, so that the steady flow compensation valve is connected from the The pressure adjustment distribution module receives the driving gas, when the steady flow supplement valve receives the gas, the steady flow supplement valve outputs the gas to the safety discharge valve, and when the steady flow supplement valve receives the driving gas At this time, the steady flow compensation valve adjusts the driving gas to a compensation pressure to output the driving gas to the air guiding element.

Preferably, the energy-saving module pressurizes the driving air output from the energy-saving module, so that the air pressure of the driving air input to the energy-saving module is lower than the air pressure of the driving air output from the energy-saving module.

Preferably, the exhaust emission recovery and stabilization control system further includes: a pressure sensing element, which is arranged on the gas guiding element to sense a gas pressure value of the gas, and determine the pressure recorded by the pressure signal Whether the gas pressure value is greater than a pressure threshold set by the pressure sensing element, generating a signal according to the sensing result; an emission control element connected to the pressure sensing element to receive the pressure signal; and The discharge end of the safety valve is connected to the gas guide element. A safety discharge valve is arranged between the discharge end of the safety valve and the gas guide element. When the discharge control element determines that the gas pressure value is greater than the discharge threshold value, the The discharge control element opens the safety discharge valve so that the gas in the air guiding element passes through the safety discharge valve to be discharged through the discharge end of the safety valve.

Preferably, the exhaust emission recovery and stabilization control system further includes: a steady flow supplement valve, the steady flow supplement valve is connected to the pressure adjustment distribution module and the air guide element, the steady flow supplement The valve receives the driving gas from the pressure adjustment and distribution module to adjust the driving gas to a compensation pressure and output to the air guiding element.

Preferably, the exhaust emission recovery and stabilization control system further includes: an energy-saving pressure compensation module, which is arranged on the energy-saving pressure control loop, and the energy-saving pressure compensation module has a microtube current limiting device, which The pressure adjustment distribution module receives the driving gas as a reference pressure for sensing the back pressure at the exhaust end of the exhaust gas discharge system. A check valve is provided between the micropipe flow limiting device and the exhaust pipe of the exhaust gas discharge system. The return valve suppresses the back pressure of the exhaust pipe of the exhaust gas discharge system, and outputs the driving gas to the exhaust pipe of the exhaust gas discharge system.

Preferably, the exhaust gas recovery and stabilization control system further includes: a vacuum pressure fine-tuning module, one end of which is connected to the energy-saving pressure control circuit, and the other end is connected to the flow stabilization module and the suction Between components, the vacuum pressure fine-tuning module receives part of the driving gas or the back pressure from the energy-saving pressure control circuit to guide the driving gas or the back pressure to the gas output by the flow stabilization module The drawing element enables the drawing element to output the driving gas or the back pressure to the exhaust end of the exhaust gas discharge system.

In order to solve the aforementioned problems, another object of the present invention is to provide a tail gas emission recovery and stabilization control system for controlling the pressure and flow rate of a gas and a driving gas introduced, so that the gas and the driving gas are mixed and output When reaching the exhaust end of an exhaust gas discharge system, the gas can be maintained at a preset pressure at the gas guiding element, so as to achieve the effect of stably maintaining the pressure and flow rate of the gas output from the exhaust end of the exhaust gas exhaust system, thereby improving the previous technology. The problem.

In order to achieve the other objective mentioned above, the present invention discloses an exhaust gas recovery and stabilization control system, which is provided with an exhaust gas inlet end, a driving gas supply end, and an exhaust gas outlet end of an exhaust gas discharge system around it, wherein the exhaust gas inlet end It is set to receive a gas, the driving gas supply end is set to receive a driving gas, and the exhaust end of the exhaust gas exhaust system is set to output the gas, the driving gas or the two after mixing, and the exhaust gas is recovered The voltage stabilization control system includes: a pilot gas element A flow stabilization module connected to the gas guiding element to receive the gas and control the flow rate of the gas output from the flow stabilization module; A pressurizing element connected with the flow stabilization module and the exhaust end of the exhaust gas discharge system, the pressurizing element sucks the gas output from the flow stabilization module to guide the gas to the exhaust gas discharge system End; a driving air guide element connected to the driving air supply end to receive the driving air; a pressure adjustment distribution module, one end of which is connected to the driving air guide element, and the other end is connected to the Between the flow stabilization module and the pressurizing element, the pressure adjusting and distributing module receives the driving air from the driving air guiding element, adjusts the pressure of the driving air to an adjusted pressure, and provides it to the pressurizing element for suction The driving gas is mixed with the driving gas and then output to the exhaust end of the tail gas discharge system.

Preferably, the exhaust gas emission recovery and stabilization control system further includes: a pressurizing element bypass module, one end of which is connected between the flow stabilization module and the pressurizing element, and the other end is connected to the Between the pressurizing element and the exhaust end of the exhaust gas discharge system, the pressurizing element bypass module receives the gas output from the pressurizing element, the driving gas, or the gas mixed with the two, and controls the gas, The flow of the driving gas or the mixed gas of the two is outputted between the flow stabilization module and the pressurizing element, so that the pressurizing element receives the gas, the driving gas or the gas after the two are mixed again , To form a loop.

Preferably, the exhaust emission recovery and stabilization control system further includes: a safety valve discharge end connected to the air guide element, and a safety discharge valve is provided between the safety valve discharge end and the air guide element, When a gas pressure value of the gas in the safety discharge valve is greater than a discharge threshold value, the safety discharge valve opens the gas to pass through the safety discharge valve, so that the gas is discharged through the discharge end of the safety valve.

Preferably, a steady flow compensation valve is provided between the safety discharge valve and the air guide element, and the steady flow compensation valve is further connected with the pressure adjustment distribution module, so that the steady flow compensation valve is connected from the The gas guiding element receives the gas or the driving gas from the pressure adjustment distribution module. When the steady flow supplement valve receives the gas, the steady flow supplement valve outputs the gas to the safety discharge valve, and when the When the steady flow compensating valve receives the driving gas, the steady flow compensating valve adjusts the driving gas to a pressure and a compensation flow rate to output the driving gas to the air guiding element.

Preferably, the exhaust emission recovery and stabilization control system further includes: a pressure sensing element, which is arranged on the gas guiding element to sense a gas pressure value of the gas, and determine the pressure recorded by the pressure signal Whether the gas pressure value is greater than a pressure threshold set by the pressure sensing element, generating a signal according to the sensing result; an emission control element connected to the pressure sensing element to receive the pressure signal; and The discharge end of the safety valve is connected to the air guide element. A safety discharge valve is arranged between the discharge end of the safety valve and the air guide element. When the discharge control element receives the pressure sensing element to determine that the gas pressure value is greater than the When the pressure threshold is reached, the emission control element opens the safety discharge valve, so that the gas in the air guiding element passes through the safety discharge valve to be discharged through the discharge end of the safety valve.

Preferably, the exhaust emission recovery and stabilization control system further includes: a vacuum adjusting element, which is arranged between the pressure adjusting and distributing module and the pressurizing element, so that the vacuum adjusting element and the outlet gas can be supplemented. The air pressure value in the outlet pipe of an exhaust gas exhaust system is adjusted to meet an adjustment threshold.

11: Air guide element

12: Drive air guiding element

13: Exhaust gas inlet

14: Drive gas supply end

15: Safety valve discharge side

16: Exhaust end of exhaust emission system

20: Flow Stabilization Module

30: drawing element

31: Exhaust pipe of exhaust emission system

32: Vacuum pressure fine-tuning module

40: Energy-saving module

50: Energy-saving pressure control loop

51: Energy-saving pressure compensation module

60: Pressure adjustment distribution module

70: Safety discharge valve

71: Pressure sensing element

72: Emission control components

80: Steady flow air supply valve

90: pressure element

91: vacuum regulator

92: Pressure component bypass module

Fig. 1 is a schematic diagram of the component arrangement of the first embodiment of the present invention;

2 is a schematic diagram of the component arrangement of the second embodiment of the present invention;

Fig. 3 is a schematic diagram of the component arrangement of the third embodiment of the present invention;

Fig. 4 is a schematic diagram of the component arrangement of the fourth embodiment of the present invention.

Specific embodiments will be described below to illustrate the implementation of the present invention, but they are not used to limit the scope of protection of the present invention.

Please refer to FIG. 1, which is a schematic diagram of the component arrangement of the first embodiment of the present invention. As shown in the figure, the first embodiment of the present invention mainly discloses an air guiding element 11, a flow stabilizing module 20, a suction element 30, a vacuum pressure fine-tuning module 32, a driving air guiding element 12, An energy-saving module 40, an energy-saving pressure control circuit 50, an energy-saving pressure compensation module 51, a pressure adjustment and distribution module 60, a safety discharge valve 70, and a steady flow compensating valve 80, the air guide element 11 It is used to guide the gas, the flow stabilization module 20 is used to control the output of the gas, the suction element 30 is used to output the gas to the gas outlet, and the driving gas guiding element 12 is used to guide the driving gas (specifically Is an inert gas, such as nitrogen), the energy-saving module 40 is used to adjust the pressure of the output driving gas according to the sensing result of the sensed back pressure, and the energy-saving pressure control circuit 50 is used to output the driving gas and receive the back pressure and the pressure adjustment The distribution module 60 is used for adjusting the pressure of the driving gas and outputting the driving gas, and the safety discharge valve 70 is used for discharging the abnormally high pressure gas to the discharge place.

In this way, the exhaust gas recovery and stabilization control system of the present invention is provided with an exhaust gas inlet 13, a driving gas supply port 14, a safety valve discharge port 15, and an exhaust gas discharge system outlet port 16 to provide the above-mentioned component connections. ; Among them, the exhaust gas intake end 13 is set to receive a The driving gas supply end 14 is set to receive a driving gas, the safety valve discharge end 15 is set to discharge the gas or the driving gas when the pressure is too high, and the exhaust end 16 of the exhaust gas discharge system It is set to output after mixing the gas, the driving gas, or both.

Since the present invention mainly has two flow routes of the gas and the driving gas, the following describes the two flow routes respectively.

gas:

The gas guiding element 11 is connected to the exhaust gas inlet 13 to receive the gas.

The flow stabilization module 20 is connected with the gas guiding element 11 to receive the gas. The flow stabilization module 20 mainly uses the structure of a needle valve to control the flow rate of the gas output from the flow stabilization module 20 (for example, control At 5-30 liters/min), and then stably output the gas.

The suction element 30 is connected to the flow stabilization module 20 and the exhaust end 16 of the exhaust gas discharge system to receive the gas output from the flow stabilization module 20 and guide the gas through an exhaust gas discharge pipe 31 of the exhaust gas system. Lead to the exhaust end 16 of the exhaust gas discharge system.

The safety discharge valve 70 is arranged between the discharge end 15 of the safety valve and the air guide element 11. When a gas pressure value of the gas in the safety discharge valve 70 is greater than a discharge threshold value (for example, 1/3 psig (psi) gauge)), the safety discharge valve 70 opens the gas to pass through the safety discharge valve 70, so that the gas can be discharged through the discharge end 15 of the safety valve. When the pressure value of the gas in the air guiding element 11 is too large, it may cause damage to the equipment connected to the air guiding element or cause a certain degree of danger, so the safety discharge valve 70 and the safety valve discharge end 15 are set The purpose is to protect the gas pressure inside the gas analyzer (the gas source) connected to the exhaust gas recovery and stabilization control system.

Driving gas:

The driving air guiding element 12 is connected to the driving air supply end 14 to receive the driving air.

The energy-saving module 40 is connected to the driving air guiding element 12 and the drawing element 30 to receive the driving air, and when the energy-saving module 40 senses a back pressure, the energy-saving module 40 is based on the The back pressure sensing result adjusts the pressure of the driving gas output to the suction element 30. In addition, the energy-saving module 40 can pressurize and output the driving air so that the air pressure of the driving air input to the energy-saving module 40 is less than the air pressure of the driving air output from the energy-saving module 40 (for example, 1:6 ), in this way, when the output pressure of the driving air increases, the output flow rate will increase correspondingly, thereby, through the adjustment of the back pressure sensing result and/or the function of the energy-saving module 40 to pressurize , Can effectively save the pressure and flow of the driving air output.

Because when the driving air is input to the drawing element 30, a corresponding pressure is generated, so when the drawing element 30 receives the pressure provided by the driving air, a corresponding vacuum pressure is generated In this way, the suction element 30 can draw the corresponding gas into the suction element 30 by using the vacuum pressure, so that the gas and the driving gas are mixed into a mixed gas and then output to the exhaust end 16 of the exhaust gas discharge system.

The pressure adjusting and distributing module 60 is connected with the driving air guiding element 12 to receive the driving air from the driving air guiding element 12 and adjust the pressure of the driving air to an adjusted pressure (for example, 20 psig) Then, output the driving gas.

The energy-saving pressure control circuit 50 is connected to the pressure adjustment and distribution module 60, the energy-saving module 40, and the exhaust pipe 31 of the exhaust gas exhaust system. The energy-saving pressure control circuit 50 receives the pressure adjustment and distribution module 60 through the energy-saving pressure Compensate the driving gas output by the module 51 and output the driving gas to the exhaust gas outlet pipe 31 of the exhaust gas exhaust system, so that the driving gas can be output together with the mixed gas output by the suction element 30. However, when The mixed gas is output to the exhaust When the exhaust end 16 of the exhaust system is exhausted, the exhaust end 16 of the exhaust gas exhaust system encounters (or does not) the back pressure, so when there is the back pressure, the back pressure will be discharged from the exhaust end 16 of the exhaust exhaust system to the exhaust gas The direction of the system outlet pipe 31 is squeezed, so the energy-saving pressure compensation module 51 receives the back pressure from the exhaust system outlet pipe 31 through the energy-saving pressure control circuit 50 to provide the energy-saving module 40 to sense the back pressure , And generate the back pressure sensing result.

Wherein, the energy-saving pressure control circuit 50 is further provided with an energy-saving pressure compensation module 51, and the energy-saving pressure compensation module 51 includes a microtube flow limiting device that receives the driving gas from the pressure adjustment and distribution module 60 to stabilize the driving gas. A check valve is provided between the micropipe flow restriction device and the exhaust pipe 31 of the exhaust gas discharge system to receive the driving gas output from the micropipe flow restriction device and output the driving gas to the tail gas discharge System air outlet pipe 31. However, the check valve is used to unidirectionally output the driving gas to the exhaust pipe 31 of the exhaust gas discharge system. However, if the energy-saving pressure control circuit 50 receives the back pressure and squeezes inward, the check valve The valve can further block the back pressure from squeezing in the direction of the microtubule flow limiting device, and when the back pressure is squeezed against the output port of the check valve, the driving gas originally output from the check valve is Due to the back pressure squeeze, it cannot be smoothly output. Therefore, the driving air between the pressure adjustment distribution module 60 and the energy-saving pressure compensation module 51 will gradually increase the air pressure due to the inability to output. At this time, the energy-saving module 40 will sense the increased air pressure of the driving air to indirectly sense the pressure increased due to the back pressure squeezing, so that the energy-saving module 40 can be based on the sensed pressure The measured back pressure (whether indirectly or directly sensed) generates the back pressure sensing result to adjust the pressure of the driving gas output to the suction element 30 to counter the back pressure.

In addition, the present invention can further be provided with a vacuum pressure fine-tuning module 32 and a steady flow gas supplement valve 80, the vacuum pressure fine-tuning module 32 is mainly used to balance the gas and the driving gas The steady flow compensation valve 80 is used to compensate the output flow of the gas, and avoid the insufficient flow of the gas to gradually form a vacuum space inside the guiding element 11.

One end of the vacuum pressure fine-tuning module 32 is connected to the energy-saving pressure control circuit 50, and the other end is connected between the flow stabilization module 20 and the suction element 30. Thus, the vacuum pressure fine-tuning module 32 is Part of the driving gas or the back pressure can be received from the energy-saving pressure control circuit 50 to guide the driving gas or the back pressure through the flow stabilization module 20 to the suction element 30, so that The suction element 30 outputs the driving gas or the back pressure to the exhaust end of the exhaust gas exhaust system, so as to achieve the effect of pressure balance.

The steady flow compensation valve 80 is connected to the pressure adjustment distribution module 60 and the air guide element 11 to receive the driving gas from the pressure adjustment distribution module 60 and adjust the driving gas to a compensation pressure ( For example, 1 inch of water column), output to the air guide element 11. Specifically, suppose that the gas flow rate originally set by the gas guiding element 11 is 5L/min, but if the exhaust gas inlet 13 can only provide 4L/min of the gas, the gas guiding element 11 will absorb If the gas is less than 5L/min, part of the vacuum pressure is gradually generated. At this time, because the steady flow compensation valve 80 has received the driving gas from the pressure adjustment distribution module 60 to perform related pressure adjustment actions (if not The act of adjusting the pressure may make the driving gas unable to effectively compensate for the gas), so the air guiding element 11 can receive the driving gas through the steady-flow compensating valve 80 to make up for the insufficient flow of the gas ( 1L/min), and then achieve the effect of compensation.

In this way, through the above embodiments, the present invention can effectively achieve the effect of stably maintaining the output of the exhaust gas exhaust system outlet 16 and the gas pressure and flow rate of the gas guiding element 11, and at the same time saving the output of the driving gas. .

Please refer to FIG. 2 and FIG. 3 again, which are the component layout of the second embodiment of the present invention Schematic diagram of the layout and the schematic diagram of the component layout of the third embodiment. As shown in the figure, the component configurations of the second embodiment and the third embodiment are roughly similar to the first embodiment shown in FIG. 1, and the main difference lies in the component configuration of the compensation gas or exhaust gas. The description is as follows:

The second embodiment (as shown in Figure 2)

In the second embodiment, the component configuration of the compensation gas and exhaust gas is different from that of the above-mentioned first embodiment, wherein the safety discharge valve 70 is provided at the steady flow compensation valve 80 and the discharge end of the safety valve 15, and the steady flow supplement valve 80 is arranged between the pressure adjustment distribution module 60, the air guide element 11 and the safety discharge valve 70, so that the steady flow supplement valve 80 and the pressure adjustment The distribution module 60, the air guide element 11 and the safety discharge valve 70 are connected. In this way, the safety discharge valve 70 cannot directly receive the gas, but the gas is received through the steady flow supplementary valve 80 and then delivered to the safety discharge valve 70.

Since the steady flow compensation valve 80 is used when the gas flow in the air guiding element 11 is insufficient, the steady flow compensation valve 80 can be used to receive the driving gas from the pressure adjustment distribution module 60 to provide the The gas is driven to the gas guiding element 11 to compensate for the insufficient flow of the gas. Conversely, if the gas in the gas guiding element 11 is too much and exceeds the compensation pressure (for example, 1 inch of water column) set by the steady flow compensation valve 80, the gas in the gas guiding element 11 will flow to the steady flow Squeeze the direction of the air supply valve 80. At this time, the safety discharge valve 70 can receive the gas to determine whether the gas pressure value of the gas is greater than the discharge threshold value (for example, 7 inches of water column). If so, the safety The discharge valve 70 will open the gas to pass through the safety discharge valve 70 so that the gas is discharged through the discharge end 15 of the safety valve.

It can be seen that, according to the configuration of the second embodiment, the pressure value setting of the compensation pressure usually needs to be less than the safety pressure value setting of the discharge threshold value, so that it can be effectively achieved. The effect of using the same pipeline for compensation or discharge.

The third embodiment (as shown in Figure 3)

In the third embodiment, the discharging element configuration is different from the above-mentioned first embodiment. Among them, the third embodiment further adds a pressure sensing element 71 and an exhaust control element 72. The pressure sensing The element 71 is mainly used to sense pressure, and determine whether it is greater than the emission threshold according to the pressure sensing result, and generate and send a signal S, and the emission control element 72 determines whether or not it is based on the received signal S Open the safety drain valve.

In this way, the pressure sensing element 71 is arranged on the air guiding element 11 and is connected to the emission control element 72 wirelessly or by wire, so as to sense the gas pressure value in the air guiding element 11, and according to the sensing After the measurement result generates the signal S, the signal S is sent to the emission control element 72.

The emission control element 72 is further connected to the safety discharge valve 70, so that when the emission control element 72 receives the signal S that the gas pressure value is greater than the emission threshold value, the emission control element 72 opens the safety The discharge valve 70 allows the gas in the air guiding element 11 to pass through the safety discharge valve 70 to discharge the gas through the discharge end 15 of the safety valve.

In this way, with the above-mentioned second and third embodiments, it is possible to effectively maintain the pressure and flow rate of the gas output from the exhaust end 16 of the exhaust gas exhaust system and the gas guiding element 11 and save the driving gas at the same time. The effect of the output.

Please refer to FIG. 4 again, which is a schematic diagram of the component arrangement of the fourth embodiment of the present invention. As shown in the figure, in the fourth embodiment, it does not have the energy-saving module, the suction element, the energy-saving pressure compensation module, and the vacuum pressure fine-tuning module as shown in the first embodiment. Instead, the fourth embodiment is further provided with a pressing element 90, a vacuum adjusting element 91 and a pressing element Bypass module 92, the pressurizing element 90 is preferably a diaphragm gas pump, which is used to suck gas and discharge the gas; the vacuum regulating element 91 is preferably a vacuum pressure regulator, which is used The negative pressure in the pipeline is adjusted to maintain the negative pressure in the pipeline on a negative pressure threshold, thereby maintaining the pressure balance in the pipeline; the pressurizing element bypass module 92 is used to receive the used gas and to The gas is output to the other end to form a loop.

In this way, the pressurizing element 90 is connected to the flow stabilization module 20 and the exhaust end 16 of the exhaust gas discharge system, so that the pressurizing element 90 sucks the gas output from the flow stabilization module 20, and the gas Lead to the exhaust end 16 of the exhaust gas discharge system.

The vacuum adjusting element 91 is arranged between the pressure adjusting and distributing module 60 and the pressurizing element 90 to adjust the air pressure in the exhaust pipe 31 of the exhaust exhaust system between the vacuum adjusting element and the outlet supplement 90 to Meet an adjustment threshold (for example, adjusted to -6"HG), because when the gas is output from the flow stabilization module 20, it can be output to the pressurizing element 90 through a negative pressure of, for example, -6"HG, so if When the pressure in the exhaust pipe 31 of the exhaust gas discharge system is adjusted to -6"HG, the pressure of the driving gas output to the pressurizing element 90 can be effectively stabilized.

One end of the pressurizing element bypass module 92 is connected between the flow stabilization module 20 and the pressurizing element 90, and the other end is connected between the pressurizing element 90 and the exhaust end 16 of the exhaust gas discharge system, In this way, when the pressurizing element 90 outputs the gas, the driving gas or the mixed gas (the mixed gas is taken as an example below), the mixed gas will flow back from the other end of the pressurizing element bypass module 92 to One end of the pressurizing element bypass module 92, and when the mixed gas flows back to the pressurizing element bypass module 92, the pressurizing element bypass module 92 can further control the flow rate of the mixed gas. The output is output to one end of the pressurizing element bypass module 92 so that the pressurizing element 90 receives the mixed gas again, thereby forming the loop to balance the pressure at the front and rear ends of the pressurizing element 90.

Through the above-disclosed embodiments, the present invention can provide a tail gas emission recovery and stabilization control system that stably maintains the pressure and flow rate of the gas, and at the same time saves the output of the driving gas.

In the description of the present invention, it should be understood that the terms "front", "rear", "shun", "inverse", "center", "horizontal", "up", "down", "left", " The orientation or positional relationship indicated by "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the diagram, and are only for the convenience of describing the present invention and simplifying the description, not It indicates or implies that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the scope of the present invention. Any equivalent implementation or modification that does not deviate from the technical spirit of the present invention shall include In the scope of the patent in this case.

11: Air guide element

12: Drive air guiding element

13: Exhaust gas inlet

14: Drive gas supply end

15: Safety valve discharge side

16: Exhaust end of exhaust emission system

20: Flow Stabilization Module

30: drawing element

31: Exhaust pipe of exhaust emission system

32: Vacuum pressure fine-tuning module

40: Energy-saving module

50: Energy-saving pressure control loop

51: Energy-saving pressure compensation module

60: Pressure adjustment distribution module

70: Safety discharge valve

80: Steady flow air supply valve

Claims (15)

A tail gas emission recovery and stabilization control system is provided with a tail gas inlet end, a driving gas supply end, and a tail gas discharge system outlet end, wherein the tail gas inlet end is set to receive a gas, and the driving gas supply end is It is configured to receive a driving gas, and the exhaust end of the exhaust gas discharge system is configured to output the gas, the driving gas or the mixture of the two, and the characteristics of the exhaust gas recovery and stabilization control system include: A gas guide element connected to the exhaust gas inlet to receive the gas; A flow stabilization module connected with the gas guiding element to receive the gas and control the flow rate of the gas output from the flow stabilization module; A suction element connected to the flow stabilization module and the exhaust end of the exhaust gas discharge system, and the suction element receives the gas to guide the gas to the exhaust end of the exhaust gas discharge system; A driving air guiding element connected with the driving air supply end to receive the driving air; An energy-saving module connected to the driving air guiding element and the drawing element. The energy-saving module receives the driving air and adjusts the amount of the driving air output to the drawing element according to the back pressure sensing result described later pressure; An energy-saving pressure control circuit, one end of which is connected to the energy-saving module, and the other end is connected to an exhaust gas exhaust pipe between the suction element and the exhaust end of the exhaust gas exhaust system. The energy-saving pressure control circuit receives the exhaust gas from the exhaust system. A back pressure input from the exhaust pipe of the exhaust system to provide the energy-saving module for sensing the back pressure, and the energy-saving module adjusts the driving air pressure according to the sensing result of the back pressure; and A pressure adjusting and distributing module connected to the driving air guiding element and the energy-saving pressure control circuit, the pressure adjusting and distributing module receiving the driving air from the driving air guiding element, and adjusting the pressure of the driving air After reaching an adjusted pressure, it is provided to the energy-saving pressure control circuit to guide the driving gas to the exhaust pipe of the exhaust gas discharge system through the energy-saving pressure control circuit road. As described in the first item of the scope of patent application, the exhaust gas recovery and stabilization control system, wherein the suction element generates a corresponding vacuum pressure according to a pressure provided by the driving gas, and the suction element uses the vacuum pressure The corresponding gas is sucked into the suction element, so that the gas is mixed with the driving gas and then output to the exhaust end of the exhaust gas discharge system. Such as the exhaust gas emission recovery and stabilization control system described in item 1 of the scope of patent application, which further includes: A safety valve discharge end, which is connected with the gas guide element, a safety discharge valve is arranged between the safety valve discharge end and the gas guide element, when a gas pressure value of the gas in the safety discharge valve is greater than a discharge At the threshold value, the safety discharge valve opens the gas to pass through the safety discharge valve, so that the gas is discharged through the discharge end of the safety valve. For example, the tail gas emission recovery and stabilization control system described in item 3 of the scope of patent application, wherein a steady flow compensating valve is provided between the safety discharge valve and the air guide element, and the steady flow compensating valve is further connected to the pressure Adjust the connection of the distribution module so that the steady flow compensation valve receives the gas from the gas guiding element or the drive gas from the pressure adjustment distribution module, when the steady flow compensation valve receives the gas due to excessive pressure , The steady flow compensating valve outputs the gas to the safety discharge valve, and when the steady flow compensating valve receives the driving gas, the steady flow compensating valve adjusts the driving gas to a compensation pressure to reduce The driving air is output to the air guiding element. As described in the first item of the scope of patent application, the exhaust gas emission recovery and stabilization control system, wherein the energy-saving module pressurizes the driving air output from the energy-saving module, so that the driving air input to the energy-saving module is The air pressure is less than the air pressure of the driving air output from the energy-saving module. Such as the exhaust gas emission recovery and stabilization control system described in item 1 of the scope of patent application, which further includes: A pressure sensing element arranged on the gas guiding element to sense a gas pressure value of the gas, And judging whether the gas pressure value recorded by the pressure signal is greater than a pressure threshold value set by the pressure sensing element, and generating a signal according to the sensing result; An emission control element connected with the pressure sensing element to receive the pressure signal; and A safety valve discharge end, which is connected with the gas guide element, a safety discharge valve is arranged between the safety valve discharge end and the gas guide element, when the discharge control element receives the pressure sensing element to determine that the gas pressure value is greater than When the pressure threshold is reached, the emission control element opens the safety discharge valve, so that the gas in the air guiding element passes through the safety discharge valve to be discharged through the discharge end of the safety valve. Such as the exhaust gas emission recovery and stabilization control system described in item 1 of the scope of patent application, which further includes: A steady flow supplement valve, the steady flow supplement valve is connected with the pressure adjustment distribution module and the air guide element, the steady flow supplement valve receives the driving gas from the pressure adjustment distribution module to drive the The air is adjusted to a compensation pressure and then output to the air guiding element. Such as the exhaust gas emission recovery and stabilization control system described in item 1 of the scope of patent application, which further includes: An energy-saving pressure compensation module is arranged on the energy-saving pressure control loop, and the energy-saving pressure compensation module has a micropipe flow limiting device to receive the driving gas from the pressure adjustment and distribution module to stabilize the pressure of the driving gas A check valve is arranged between the micropipe flow limiting device and the exhaust pipe of the exhaust gas discharge system to output the driving gas to the exhaust pipe of the exhaust gas discharge system. Such as the exhaust gas emission recovery and stabilization control system described in item 1 of the scope of patent application, which further includes: A vacuum pressure fine-tuning module, one end of which is connected to the energy-saving pressure control circuit, and the other end is connected between the flow stabilization module and the suction element, the vacuum pressure fine-tuning module is Part of the driving gas or the back pressure is received from the energy-saving pressure control circuit to communicate the driving gas or the back pressure and the gas output from the flow stabilization module to the suction element, so that the suction element will The gas or the back pressure is output to the exhaust end of the exhaust gas discharge system. A tail gas emission recovery and stabilization control system is provided with a tail gas inlet end, a driving gas supply end, and a tail gas discharge system outlet end, wherein the tail gas inlet end is set to receive a gas, and the driving gas supply end is It is configured to receive a driving gas, and the exhaust end of the exhaust gas discharge system is configured to output the gas, the driving gas or the mixture of the two. The characteristics of the exhaust gas recovery and stabilization control system include: A gas guide element connected to the exhaust gas inlet to receive the gas; A flow stabilization module connected with the gas guiding element to receive the gas and control the flow rate of the gas output from the flow stabilization module; A pressurizing element connected with the flow stabilization module and the exhaust end of the exhaust gas discharge system, the pressurizing element sucks the gas output from the flow stabilization module to guide the gas to the exhaust gas discharge system end; A driving air guiding element connected with the driving air supply end to receive the driving air; A pressure adjustment and distribution module, one end of which is connected to the driving air guiding element, and the other end of which is connected between the flow stabilizing module and the pressurizing element, and the driving providing module is received from the driving air guiding element The driving gas is adjusted to an adjusted pressure and then provided to the pressurizing element to suck the driving gas, so that the driving and the gas are mixed and output to the exhaust end of the exhaust gas discharge system. Such as the exhaust emission recovery and stabilization control system described in item 10 of the scope of patent application, which further includes: A pressurizing element bypass module, one end of which is connected between the flow stabilization module and the pressurizing element, and the other end is connected between the pressurizing element and the exhaust end of the exhaust gas exhaust system. The pressurizing element bypass module receives the gas output from the pressurizing element, the driving gas, or the mixed gas of the two, and controls the flow of the gas, the driving gas, or the mixed gas of the two It is output between the flow stabilization module and the pressurizing element, so that the pressurizing element re-receives the gas, the driving gas or the mixed gas of the two to form a loop. Such as the exhaust emission recovery and stabilization control system described in item 10 of the scope of patent application, which further includes: A safety valve discharge end, which is connected with the gas guide element, a safety discharge valve is arranged between the safety valve discharge end and the gas guide element, when a gas pressure value of the gas in the safety discharge valve is greater than a discharge At the threshold value, the safety discharge valve opens the gas to pass through the safety discharge valve, so that the gas is discharged through the discharge end of the safety valve. For example, the tail gas emission recovery and stabilization control system described in item 12 of the scope of patent application, wherein a steady flow compensating valve is provided between the safety discharge valve and the air guide element, and the steady flow compensating valve is further connected to the pressure The adjustment and distribution module is connected so that the steady flow compensation valve receives the gas from the gas guiding element or the driving gas from the pressure adjustment distribution module. When the steady flow compensation valve receives the gas, the steady flow The compensating valve outputs the gas to the safety discharge valve, and when the steady flow compensating valve receives the driving gas, the steady flow compensating valve adjusts the driving gas to a compensation pressure to output the driving gas To the air guide element. Such as the exhaust emission recovery and stabilization control system described in item 10 of the scope of patent application, which further includes: A pressure sensing element arranged on the gas guiding element to sense a gas pressure value of the gas, and determining whether the gas pressure value recorded by the pressure signal is greater than a pressure threshold set by the pressure sensing element Value, a signal is generated according to the sensing result; An emission control element connected with the pressure sensing element to receive the signal; and A discharge end of a safety valve, which is connected to the air guide element, and the discharge end of the safety valve is connected to the air guide element A safety discharge valve is arranged between the parts. When the discharge control element receives the pressure sensing element to determine that the gas pressure value is greater than the discharge threshold value, the discharge control element opens the safety discharge valve so that the gas flow inside the gas guide element The gas passes through the safety discharge valve to be discharged through the discharge end of the safety valve. Such as the exhaust emission recovery and stabilization control system described in item 10 of the scope of patent application, which further includes: A vacuum adjusting element is arranged between the pressure adjusting and distributing module and the pressurizing element, so as to adjust the air pressure value in an exhaust pipe of an exhaust gas exhaust system between the vacuum adjusting element and the pressurizing element to conform to a Adjust the threshold.

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