TWI789578B - Exhaust emission recovery and voltage stabilization control system - Google Patents

Abstract

The present invention provides a tail gas emission recovery stabilization control system, which is mainly used to control the pressure and flow rate of a gas and a driving gas introduced, so that when the gas and the driving gas are mixed and output to the outlet of a tail gas discharge system, the control is at A preset pressure (such as 1 inch water column (inch-WC)), in addition, when the outlet of the exhaust emission system generates back pressure due to the output gas, an energy-saving module can also adjust the output according to the sensing result of the back pressure The pressure of the driving gas to the suction element, and then against the back pressure, so that the output gas (gas, driving gas or a mixture of the two) at the outlet of the exhaust gas discharge system can still maintain the gas and the guide gas stably. The preset pressure of the gas element is used to achieve the effect of stably maintaining the pressure and flow of the output gas at the outlet of the exhaust emission system, and at the same time saving the output of the driving gas.

Description

Exhaust emission recovery and voltage stabilization control system

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

Since 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, the related technologies of pressure, flow control or composition analysis are usually applied It is used in industrial process or equipment to effectively control the working fluid.

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

However, because the gas system to be analyzed is generally at normal temperature and pressure, and when it is discharged from the gas analysis instrument, it is easy to generate a back pressure, which makes the gas unable to be effectively discharged and affects the analysis results. Therefore, in order to effectively output the gas Exhaust gas, now another driving gas (such as an inert gas) is used to assist in exporting the exhaust gas.

However, the prior art system cannot effectively control the flow rate or output of the exhaust gas. pressure, and when using the driving gas to assist the output of the exhaust gas, the driving gas cannot be effectively distributed to cause waste or shortage of the driving gas. Therefore, in order to improve the problems of the prior art, there is an urgent need for an The flow and pressure of the exhaust gas, and the control system for effectively distributing the driving gas to save the output of the driving gas.

In order to solve the problems disclosed above, one object of the present invention is to provide a tail gas emission recovery and pressure stabilization control system, which is used to control the pressure and flow of a gas and a driving gas introduced, so that the gas and the driving gas are mixed and output to the When the outlet of an exhaust emission system is controlled at a preset pressure, in addition, when the outlet of the exhaust emission system generates back pressure due to output gas or other factors, the output can be adjusted according to the sensing result of the back pressure to The pressure of the driving gas of the suction element, and then against the back pressure, so that the output gas at the outlet end of the exhaust gas discharge system can still maintain the preset pressure of the gas and the gas guide element stably, so as to achieve stable maintenance of the exhaust gas discharge The system outputs the pressure and flow of the gas at the outlet of the system, and at the same time saves the output of the driving gas, so as to improve the problems of the previous technology.

In order to achieve the above-mentioned purpose, the present invention discloses a tail gas emission recovery and pressure stabilization control system, which is provided with an exhaust gas inlet port, a driving gas supply port and an exhaust gas discharge system outlet port around it, wherein the tail gas inlet port is It is set to receive a gas, the drive gas supply end is set to receive a drive gas, and the outlet end of the tail gas discharge system is set to output the gas, the drive gas or both for use, and the exhaust gas is discharged and recovered The voltage stabilizing control system includes: a gas guide element, which is connected to the exhaust gas inlet end to receive the gas; a flow stabilization module, which is connected to the gas guide element to receive the gas, and controls the gas from The output of the flow stabilization module is Flow rate; a drawing element, which is connected with the flow stabilization module and the exhaust gas outlet of the exhaust gas discharge system, and the suction component receives the gas to guide the gas to the gas outlet of the exhaust gas discharge system; a driving gas guide a guiding element, which is connected with the driving gas supply end to receive the driving gas; an energy-saving module, which is connected with the driving gas guiding element and the drawing element, the energy-saving module receives the driving gas, and Adjusting the pressure of the drive gas output to the extraction element according to a back pressure sensing result; an energy-saving pressure control circuit, 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 gas discharge system outlet pipe between the exhaust gas outlets, the energy-saving pressure control circuit receives a back pressure input from the exhaust gas discharge system outlet pipe, and provides the energy-saving module to sense the back pressure through the energy-saving pressure compensation module , the energy-saving module adjusts the pressure of the driving air according to the sensing result of the back pressure; The group receives the driving gas from the driving gas guiding element, and adjusts the pressure of the driving gas to a regulated pressure and then provides it to the energy-saving pressure control circuit, so that the driving gas can be driven through the energy-saving pressure compensation module through the energy-saving pressure control circuit. The gas is guided to the outlet pipe of the exhaust system.

Preferably, the suction element generates a corresponding vacuum pressure according to the 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 outlet of the exhaust gas discharge system.

Preferably, the exhaust emission recovery and pressure stabilization control system further includes: a safety valve discharge end connected to the air guide element, 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 1. Safety mechanism.

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

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

Preferably, the exhaust emission recovery and pressure stabilization control system further includes: a pressure sensing element, which is arranged on the gas guide element to sense a gas pressure value of the gas, and judge the pressure signal recorded Whether the gas pressure value is greater than a pressure threshold value set by the pressure sensing element, a signal is generated according to the sensing result; an emission control element is connected with the pressure sensing element to receive the pressure signal; and a The discharge end of the safety valve is connected to the gas guide element, and a safety discharge valve is provided between the discharge end of the safety valve and the air guide element. When the discharge control element judges 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 gas guide element passes through the safety discharge valve to be discharged through the discharge port of the safety valve.

Preferably, the exhaust emission recovery stabilization control system further includes: a steady flow air supplement valve, the steady flow air supplement valve is connected with the pressure adjustment distribution module and the air guide element, the steady flow air supplement The valve receives the driving gas from the pressure adjustment distribution module, adjusts the driving gas to a compensating pressure and outputs it to the gas guide element.

Preferably, the exhaust emission recovery and pressure stabilization control system further includes: an energy-saving pressure compensation module, which is arranged on the energy-saving pressure control circuit, and the energy-saving pressure compensation module has a microtube flow limiting device, which is from The pressure adjustment distribution module receives the driving gas as a reference pressure for sensing the back pressure of the outlet end of the exhaust emission system. The return valve suppresses the back pressure of the outlet pipeline of the exhaust gas discharge system, and outputs the driving gas to the gas outlet pipeline of the exhaust gas discharge system.

Preferably, the exhaust gas emission recovery 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, so as to guide the driving gas or the back pressure through the gas output by the flow stabilization module to The suction element is such that the suction element outputs the driving gas or the back pressure to the exhaust end of the exhaust gas discharge system.

In order to solve the problems disclosed above, another object of the present invention is to provide a tail gas emission recovery and pressure stabilization control system, which is used to control the pressure and flow of a gas and a driving gas introduced, so that the gas and the driving gas are mixed and output When it reaches the outlet end of an exhaust emission system, the gas can be maintained at a preset pressure in the gas guide element, thereby achieving the effect of stably maintaining the pressure and flow rate of the gas output at the outlet end of the exhaust emission system, so as to improve the prior art The problem.

In order to achieve the above-mentioned another purpose, the present invention discloses a tail gas emission recovery and pressure stabilization control system, which is provided with an exhaust gas inlet port, a driving gas supply port and an exhaust gas discharge system outlet port around it, wherein the tail gas inlet port It is set to receive a gas, the driving gas supply end is set to receive a driving gas, and the outlet of the tail gas discharge system is set to output the gas, the driving gas or a mixture of the two, and the exhaust gas is discharged and recovered The voltage stabilizing control system includes: a gas guide element A component, which is connected to the exhaust gas inlet to receive the gas; a flow stabilization module, which is connected to the gas guide element, to receive the gas, and controls the output flow of the gas from the flow stabilization module; A pressurizing element, which is connected with the flow stabilizing module and the outlet port of the exhaust gas discharge system, the pressurizing element absorbs the gas output from the flow stabilizing module, so as to guide the gas to the exhaust gas discharge system outlet end; a driving air guiding element, which is 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 guiding element, and the other end is connected to the Between the flow stabilization module and the pressurizing element, the pressure adjustment distribution module receives the driving gas from the driving air guiding element, and adjusts the pressure of the driving gas to a regulated pressure and provides it to the pressurizing element for absorption The drive gas is output to the exhaust end of the exhaust gas discharge system after the drive gas is mixed with the gas.

Preferably, the exhaust emission recovery and pressure stabilization control system further includes: a pressure element bypass module, one end of which is connected between the flow stabilization module and the pressure element, and the other end is connected to the Between the pressurizing element and the outlet end of the exhaust gas discharge system, the pressurizing element bypass module receives the gas, the driving gas, or the mixed gas output from the pressurizing element, and controls the gas, The flow rate of the driving gas or the mixture of the two is then output between the flow stabilization module and the pressurizing element, so that the pressurizing element can receive the gas, the driving gas or the mixture of the two again , to form a loop.

Preferably, the exhaust emission recovery and pressure stabilization control system further includes: a safety valve discharge end connected to the air guide element, 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 port of the safety valve.

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

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

Preferably, the exhaust emission recovery and pressure stabilization control system further includes: a vacuum adjustment element, which is arranged between the pressure adjustment distribution module and the pressurizing element, so as to connect the vacuum adjustment element to the outlet auxiliary The air pressure value in the outlet pipe of an exhaust gas discharge system is adjusted to meet an adjustment threshold.

11: Air guiding element

12: Drive air guide element

13: Exhaust gas intake port

14: Drive gas supply end

15:Safety valve discharge end

16: Exhaust exhaust system outlet

20: Flow stabilization module

30: Draw components

31: Exhaust exhaust system outlet pipe

32: Vacuum pressure fine-tuning module

40: Energy saving module

50: Energy-saving pressure control circuit

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 supplement valve

90:Pressure element

91: Vacuum adjustment element

92: Pressurized element bypass module

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

Fig. 2 is a schematic diagram of the component configuration of the second embodiment of the present invention;

Fig. 3 is a schematic diagram of the component configuration 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 intended to limit the protection scope of the present invention.

Please refer to FIG. 1 first, 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 a gas guiding element 11, a flow stabilization module 20, a suction element 30, a vacuum pressure fine-tuning module 32, a driving gas 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 distribution module 60, a safety discharge valve 70 and a steady flow air supplement 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 guide element 12 is used to guide the driving gas (specifically 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 back pressure, the energy-saving pressure control circuit 50 is used to output the driving gas and receive the back pressure, the pressure adjustment The distribution module 60 is used to adjust the pressure of the driving gas and output the driving gas, and the safety discharge valve 70 is used to discharge the abnormally high pressure gas to a discharge place.

Thus, the periphery of the tail gas emission recovery and pressure stabilization control system of the present invention is provided with an exhaust gas inlet port 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 ; Wherein, the tail gas inlet port 13 is set to receive a Gas, the driving gas supply end 14 is set to receive a driving gas, the safety valve discharge port 15 is set to discharge the gas or the driving gas when the pressure is too high and abnormal, and the exhaust gas discharge system outlet 16 It is set to output the gas, the driving gas or the mixture of the two.

Since the present invention mainly has two flow paths of the gas and the driving gas, the two flow paths are described separately below.

gas:

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

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

The extraction element 30 is connected with the flow stabilization module 20 and the exhaust gas discharge system outlet 16 to receive the gas output from the flow stabilization module 20, and guide the gas through a tail gas discharge system outlet pipe 31 lead to the outlet port 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 gas guide element 11, when a gas pressure value of the gas in the safety discharge valve 70 is greater than a discharge threshold (eg 1/3 psig (psi gauge)), the safety discharge valve 70 is to open the gas to pass through the safety discharge valve 70, so that the gas can be discharged through the discharge port 15 of the safety valve. When the pressure value of the gas in the air guide element 11 is too large, it may cause damage to the equipment connected to the air guide element or cause certain dangers, so the safety discharge valve 70 and the discharge port 15 of the safety valve are provided with The purpose is to protect the gas pressure inside the gas analyzer (the gas source) connected to the tail gas recovery and pressure stabilization control system.

Driving gas:

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

The energy-saving module 40 is connected with 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 then according to 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 the output driving gas so that the pressure of the driving gas input to the energy-saving module 40 is smaller than the pressure of the driving gas output from the energy-saving module 40 (for example, 1:6 ), so that when the pressure of the output drive gas increases, the output flow will correspondingly increase, thereby, through the adjustment of the back pressure sensing result and/or the boosting function of the energy-saving module 40 , the pressure and flow of the drive gas output can be effectively saved.

Since when the driving gas is input into the suction element 30, a corresponding pressure will be generated, so when the suction element 30 receives the pressure provided by the driving gas, a corresponding vacuum pressure will be generated. In this way, the suction element 30 can use the vacuum pressure to suck the corresponding gas into the suction element 30, so that the gas and the driving gas are mixed to form a mixed gas and then output to the gas outlet 16 of the exhaust gas discharge system.

The pressure adjustment distribution module 60, which is connected to the driving gas guiding element 12, receives the driving gas from the driving gas guiding element 12, and adjusts the pressure of the driving gas to a regulated pressure (for example, 20 psig) After that, the driving gas is output again.

The energy-saving pressure control circuit 50 is connected with the pressure adjustment distribution module 60, the energy-saving module 40 and the exhaust gas discharge system outlet pipe 31. The energy-saving pressure control circuit 50 receives the pressure adjustment distribution module 60 via the energy-saving pressure Compensate the driving gas output by the module 51, and output the driving gas to the exhaust gas discharge system outlet pipe 31, so that the driving gas can be output together with the mixed gas output by the extraction element 30, however, when The mixture is exported to the exhaust When the outlet 16 of the exhaust system is discharged, the outlet 16 of the tail gas discharge system encounters (or does not) have the back pressure, so that when there is the back pressure, the back pressure will be discharged from the outlet 16 of the tail gas discharge system to the tail 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, so as to provide the energy-saving module 40 to sense the back pressure , and generate the backpressure sensing result.

Wherein, the energy-saving pressure control circuit 50 is further provided with an energy-saving pressure compensation module 51, the energy-saving pressure compensation module 51 includes a micro-pipe flow limiting device to receive the driving gas from the pressure adjustment distribution module 60 to stabilize the driving gas air pressure, a check valve is provided between the micro-pipe restrictor and the outlet pipe 31 of the exhaust gas discharge system to receive the drive gas output from the micro-tube flow restrictor, and output the drive gas to the exhaust gas discharge System outlet pipe 31. However, the check valve is used to unidirectionally output the driving gas to the outlet pipe 31 of the exhaust gas discharge system, but if the energy-saving pressure control circuit 50 receives the back pressure and squeezes inward, the check valve will The valve can further prevent the back pressure from being extruded in the direction of the micropipe restrictor, and when the back pressure is extruded on the output port of the check valve, the driving gas originally output from the check valve will be Due to the extrusion of the back pressure, the smooth output cannot be achieved. In this way, the driving gas 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 gas to indirectly sense the increased pressure due to the back pressure extrusion, whereby the energy-saving module 40 can The measured back pressure (whether indirectly or directly sensed) generates the back pressure sensing result to adjust the pressure of the drive gas output to the suction element 30 against 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 air pressure in between, and the steady flow supplementary gas valve 80 is used to compensate the output flow of the gas, so as to avoid the gradual formation of a vacuum space inside the guide element 11 due to insufficient flow of the gas.

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, so that 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, so that the driving gas or the back pressure is guided to the pumping element 30 through the gas output by the flow stabilization module 20, so that The suction element 30 outputs the driving gas or the back pressure to the outlet of the exhaust gas discharge system, so as to achieve the effect of pressure balance.

The steady flow supplementary air valve 80 is connected with the pressure adjustment distribution module 60 and the air guide element 11, so as to receive the driving gas from the pressure adjustment distribution module 60, and adjust the driving gas to a compensation pressure ( Such as 1 inch of water column), output to the air guide element 11. Specifically, assuming that the gas flow rate originally set by the gas guide element 11 is 5 L/min, but if the exhaust gas inlet port 13 can only provide 4 L/min of the gas, the gas guide element 11 will be sucked If the gas is less than 5L/min, a partial vacuum pressure is gradually generated. At this time, because the steady flow supplementary gas valve 80 has received the driving gas from the pressure adjustment distribution module 60 to perform the relevant pressure adjustment action (if not The action of pressure adjustment may make the driving gas unable to effectively compensate the gas), so the gas guiding element 11 can receive the driving gas through the steady flow supplementary gas 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 embodiment, the present invention can effectively achieve the effect of stably maintaining the pressure and flow of the gas output from the outlet 16 of the exhaust system and the gas guide element 11, and at the same time saving the output of the driving gas .

Please refer to Fig. 2 and Fig. 3 again, it is the component distribution of the second embodiment of the present invention A schematic diagram of the arrangement and a schematic diagram of the component configuration of the third embodiment. As shown in the figure, the component configurations of the second embodiment and the third embodiment are generally similar to those of the first embodiment shown in FIG. as follows:

Second embodiment (as shown in Figure 2)

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

Since the steady-flow supplementary gas valve 80 is used to receive the driving gas from the pressure adjustment distribution module 60 by the steady-flow supplementary gas valve 80 to provide the The gas is driven to the gas guide element 11, thereby compensating the insufficient flow of the gas. Conversely, if the gas in the air guide element 11 is too much and exceeds the compensation pressure (for example, 1 inch of water column) set by the steady flow supplementary air valve 80, the gas in the air guide element 11 will flow toward the steady flow Extrude in the direction of the gas supply valve 80, at this moment, the safety discharge valve 70 can receive the gas to judge whether the gas pressure value of the gas is greater than the discharge threshold (such as 7 inches of water column), if so, the safety Only when the discharge valve 70 is opened, the gas passes through the safety discharge valve 70 , so that the gas is discharged through the discharge port 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 lower than the safety pressure value setting of the discharge threshold value, so that it can be effectively achieved. Use the same pipeline for compensation or discharge.

The third embodiment (as shown in Figure 3)

In the third embodiment, the component configuration of the exhaust gas is different from the above-mentioned first embodiment, wherein, the third embodiment further adds a pressure sensing element 71 and an emission control element 72, the pressure sensing The component 71 is mainly used for sensing pressure, and judges whether it is greater than the discharge threshold value according to the sensing result of the pressure, and generates and sends a signal S, and the discharge control component 72 decides whether to receive the signal S or not Open the safety vent valve.

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

And the emission control element 72 is further connected with 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 discharge threshold value, the emission control element 72 opens the safety valve. The discharge valve 70 allows the gas in the gas guide element 11 to pass through the safety discharge valve 70 to discharge the gas through the discharge port 15 of the safety valve.

In this way, through the above-mentioned second and third embodiments, it is possible to effectively maintain the pressure and flow of the gas output from the outlet end 16 of the exhaust gas discharge system and the gas guide element 11, and simultaneously save the driving gas. output effect.

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, the energy-saving module, the extraction element, the energy-saving pressure compensation module, and the vacuum pressure fine-tuning module as shown in the first embodiment are not provided. Instead, the fourth embodiment is further provided with a pressing element 90, a vacuum regulating 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 to In adjusting the negative pressure in the pipeline, to maintain the negative pressure in the pipeline on a negative pressure threshold, and then maintain the pressure balance in the pipeline; the pressurizing element bypass module 92 is used to receive the output gas, and The gas is output to the other end to form a loop.

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

The vacuum adjustment element 91 is arranged between the pressure adjustment distribution module 60 and the pressurizing element 90 to adjust the air pressure in the exhaust gas discharge system outlet pipe 31 between the vacuum adjustment element and the outlet auxiliary 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 -6 "HG, for example, so, if When the pressure in the outlet pipe 31 of the exhaust emission 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 gas discharge system outlet 16, In this way, when the pressurizing element 90 outputs the gas, the driving gas or the mixed gas (the mixed gas is used 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 of the mixed gas, and then The output is sent to one end of the pressurizing element bypass module 92 , so that the pressurizing element 90 receives the mixed gas again, so as to form the circuit and balance the pressure at the front and rear ends of the pressurizing element 90 .

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

In describing the present invention, it should be understood that the terms "front", "rear", "cis", "reverse", "central", "transverse", "upper", "lower", "left", " The orientations or positional relationships indicated by "right", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention.

The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not used to limit the patent scope of the present invention, and any equivalent implementation or change that does not depart from the technical spirit of the present invention shall include within the patent scope of this case.

11: Air guide element

12: Drive air guide element

13: Exhaust gas intake port

14: Drive gas supply end

15:Safety valve discharge end

16: Exhaust exhaust system outlet

20: Flow stabilization module

30: Draw components

31: Exhaust exhaust system outlet pipe

32: Vacuum pressure fine-tuning module

40: Energy saving module

50: Energy-saving pressure control circuit

51: Energy-saving pressure compensation module

60: Pressure adjustment distribution module

70:Safety discharge valve

80: Steady flow air supplement valve

Claims (15)

A tail gas emission recovery and pressure stabilization control system, which is provided with an exhaust gas inlet port, a driving gas supply port and an exhaust gas discharge system outlet port, wherein the tail gas inlet port is configured to receive a gas, and the driving gas supply port is It is set to receive a drive gas, and the outlet port of the tail gas discharge system is set to output the gas, the drive gas or both, and the characteristics of the tail gas recovery and pressure stabilization control system include: a gas guide element connected to the exhaust gas inlet to receive the gas; A flow stabilization module, which is connected to the gas guide element to receive the gas and control the output flow of the gas from the flow stabilization module; a suction element, which is connected with the flow stabilization module and the exhaust gas outlet of the exhaust gas discharge system, the suction component receives the gas, so as to guide the gas to the gas outlet of the exhaust gas discharge system; a driving gas guide element connected to the driving gas supply end to receive the driving gas; An energy-saving module, which is connected with the driving gas guide element and the suction element, the energy-saving module receives the driving gas, and adjusts the ratio of the driving gas output to the suction 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 outlet pipe of the exhaust gas discharge system between the extraction element and the outlet of the exhaust gas discharge system, the energy-saving pressure control circuit receives the exhaust gas from the A back pressure input from the outlet pipe of the exhaust system to provide the energy-saving module to sense the back pressure, and the energy-saving module adjusts the driving gas pressure according to the back pressure sensing result; and A pressure adjustment distribution module, which is connected with the driving gas guiding element and the energy-saving pressure control circuit, the pressure adjusting distribution module receives the driving gas from the driving gas guiding element, and adjusts the pressure of the driving gas After reaching a regulated pressure, it is provided to the energy-saving pressure control circuit, so as to guide the driving gas to the outlet pipe of the exhaust emission system through the energy-saving pressure control circuit road. The tail gas emission recovery stabilization control system described in item 1 of the scope of the patent application, wherein the suction element generates a corresponding vacuum pressure according to the pressure provided by the driving gas, and the suction element utilizes 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 gas outlet of the exhaust gas discharge system. The tail gas emission recovery and pressure stabilization control system as described in item 1 of the scope of patent application, which further includes: A safety valve discharge end, which is connected to the gas guide element, a safety discharge valve is provided 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 When the threshold value is reached, the safety discharge valve opens the gas to pass through the safety discharge valve, so that the gas is discharged through the discharge port of the safety valve. As described in item 3 of the scope of the patent application, the tail gas emission recovery and pressure stabilization control system, wherein a steady flow air supplement valve is provided between the safety discharge valve and the air guiding element, and the steady flow air supplement valve is further connected to the pressure Adjust the distribution module to be connected so that the steady flow supplementary air valve receives the gas from the gas guide element or receives the driving gas from the pressure adjustment distribution module, when the steady flow supplementary air valve receives the gas due to excessive pressure , the steady flow gas supply valve outputs the gas to the safety discharge valve, and when the steady flow gas supply valve receives the driving gas, the steady flow gas supply valve adjusts the driving gas to a compensation pressure to The driving gas is output to the gas guiding element. The exhaust emission recovery and voltage stabilization control system described in item 1 of the scope of the patent application, wherein the energy-saving module supercharges the driving gas output from the energy-saving module, so that the driving gas input to the energy-saving module The air pressure is lower than the air pressure of the driving air output from the energy-saving module. The tail gas emission recovery and pressure stabilization control system as described in item 1 of the scope of patent application, which further includes: a pressure sensing element, which is arranged on the gas guide 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, which is connected with the pressure sensing element to receive the pressure signal; and a safety valve discharge end, which is connected to the gas guide element, and a safety discharge valve is provided between the safety valve discharge end and the air guide element, when the discharge control element receives the pressure sensing element When it is judged that the gas pressure value is greater than the pressure threshold value, the discharge control element opens the safety discharge valve, so that the gas in the gas guide element passes through the safety discharge valve to be discharged through the discharge port of the safety valve. The tail gas emission recovery and pressure stabilization control system described in item 1 of the scope of the patent application, which further includes: a steady flow air supplement valve, which is connected to the pressure adjustment distribution module and the air guide element , the steady flow supplementary air valve receives the driving gas from the pressure adjustment distribution module, adjusts the driving gas to a compensating pressure and then outputs it to the air guiding element. The tail gas emission recovery and pressure stabilization control system described in item 1 of the scope of the patent application further includes: an energy-saving pressure compensation module, which is installed on the energy-saving pressure control circuit, and the energy-saving pressure compensation module has a micropipe The flow limiting device receives the driving gas from the pressure adjustment distribution module to stabilize the pressure of the driving gas. Output to the outlet pipe of the exhaust emission system. The tail gas emission recovery and pressure stabilization control system described in item 1 of the scope of the patent application 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 Between the module and the drawing 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, so that the driving gas or the back pressure and the gas output by the flow stabilization module are communicated to the suction element, so that the suction element will The gas or the back pressure is output to the outlet of the exhaust gas discharge system. A tail gas emission recovery and pressure stabilization control system, which is provided with an exhaust gas inlet port, a driving gas supply port and an exhaust gas discharge system outlet port, wherein the tail gas inlet port is configured to receive a gas, and the driving gas supply port is It is set to receive a driving gas, and the outlet end of the tail gas discharge system is set to output the gas, the driving gas or the two after mixing. The features of the tail gas emission recovery stabilization control system include: a gas guide element, It is connected with the tail gas inlet to receive the gas; a flow stabilization module is connected with the gas guide element to receive the gas, and controls the output flow of the gas from the flow stabilization module; a pressure element, which is connected with the flow stabilization module and the outlet of the exhaust emission system, and the pressure element absorbs the gas output from the flow stabilization module to guide the gas to the outlet of the exhaust emission system; A driving air guiding element, which is connected with the driving air supply end to receive the driving air; a pressure adjustment distribution module, one end of which is connected with the driving air guiding element, and the other end is connected to the flow stabilization Between the module and the pressurizing element, the pressure adjustment distribution module receives the driving air from the driving air guiding element, and adjusts the pressure of the driving air to a regulated pressure and provides it to the pressing element to absorb the driving gas, so that the drive is mixed with the gas, and then output to the outlet end of the exhaust gas emission system. As described in the tenth item of the scope of the patent application, the tail gas emission recovery and pressure stabilization control system further includes: a pressure element bypass module, one end of which is connected between the flow stabilization module and the pressure element, and The other end is connected between the pressurizing element and the outlet of the exhaust system, the The pressurized element bypass module receives the gas, the driving gas, or a mixture of the two from the pressurizing element, and controls the flow rate of the gas, the driving gas, or the mixture of the two The output is between the flow stabilization module and the pressurizing element, so that the pressurizing element receives the gas, the driving gas or a mixture of the two again to form a loop. The tail gas emission recovery and pressure stabilization control system described in item 10 of the scope of the patent application further includes: A safety valve discharge end, which is connected to the gas guide element, a safety discharge valve is provided 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 When the threshold value is reached, the safety discharge valve opens the gas to pass through the safety discharge valve, so that the gas is discharged through the discharge port of the safety valve. As described in the twelfth item of the scope of the patent application, the tail gas emission recovery and pressure stabilization control system, wherein a steady flow air supplement valve is provided between the safety discharge valve and the air guiding element, and the steady flow air supplement valve is further connected to the pressure The adjustment distribution module is connected so that the steady flow supplementary air valve receives the gas from the gas guide element or receives the driving gas from the pressure adjustment distribution module. When the steady flow supplementary supplementary valve receives the gas, the steady flow The gas supply valve outputs the gas to the safety discharge valve, and when the steady flow gas supply valve receives the driving gas, the steady flow gas supply valve adjusts the driving gas to a compensation pressure to output the driving gas to the air guide element. The tail gas emission recovery and pressure stabilization control system described in item 10 of the scope of the patent application further includes: A pressure sensing element, which is arranged on the gas guiding element to sense a gas pressure value of the gas, and judge whether the gas pressure value recorded by the pressure signal is greater than a pressure threshold set by the pressure sensing element value, generating a signal according to the sensing result; an emission control element coupled to the pressure sensing element to receive the signal; and A safety valve discharge end, which is connected with the air guide element, and the safety valve discharge end is connected with the air guide element There is a safety discharge valve between the components. When the discharge control component receives the pressure sensing component and judges that the gas pressure value is greater than the discharge threshold value, the discharge control component will open the safety discharge valve so that the air in the gas guide component The gas passes through the safety discharge valve to be discharged through the discharge end of the safety valve. As described in item 10 of the scope of the patent application, the tail gas emission recovery and pressure stabilization control system further includes: A vacuum adjustment element, which is arranged between the pressure adjustment distribution module and the pressurizing element, so as to adjust the air pressure value in the outlet pipe of the exhaust gas discharge system between the vacuum adjustment element and the pressurizing element to meet a Adjust the threshold.

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