Tail gas flow control system for pharmaceutical reaction tank

Abstract

The utility model discloses a tail gas flow control system for a pharmaceutical reaction tank, which comprises a tail gas buffer tank, one end of the tail gas buffer tank is connected with a reaction tail gas pipeline, and the other end of the tail gas buffer tank is connected with a tail gas fan through a pipeline; the gas outlet end of the tail gas fan is connected with an exhaust pipe which is connected with a tail gas treatment workshop; the surface of the tail gas buffer tank is connected with a pressure transmitter which is electrically connected with the controller; the exhaust pipe is connected with a detection branch pipe, one end of the detection branch pipe is connected with a nitrogen sensor, and the nitrogen sensor is electrically connected with the controller; according to the system, the air suction amount of the fan can be adjusted in real time according to the production exhaust amount, and the air suction pressure of the fan is kept stable and controllable.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical tail gas treatment, in particular to a tail gas flow control system for a pharmaceutical reaction tank. Background Art

[0002] In pharmaceutical production, the wind pressure of the tail gas pipeline in the existing technology is manually adjusted by workshop employees. According to the production situation, the fan exhaust frequency is adjusted on site according to the changes in real-time production load to achieve the purpose of adjusting the wind pressure. If the exhaust volume during the adjustment process is too small, the reaction tail gas cannot be discharged in time. Since the reaction tail gas contains flammable and explosive gases, the safety risk will be very large. If the exhaust volume is too large, a large amount of nitrogen in the reactor and storage tank will be extracted through the tail gas pipeline and enter the environmentally friendly activated carbon or RTO equipment, which will cause a large increase in waste gas and thus increase the cost of environmental waste gas treatment. At the same time, manpower is wasted. Therefore, it is necessary to design an exhaust gas flow control system for pharmaceutical reaction tanks to solve the above problems. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an exhaust gas flow control system for a pharmaceutical reaction tank, so that the exhaust volume of the fan can be adjusted in real time according to the exhaust gas volume discharged during production, and the exhaust pressure of the fan can be kept stable and controllable.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an exhaust gas flow control system for a pharmaceutical reaction tank, including an exhaust gas buffer tank, one end of the exhaust gas buffer tank is connected to the reaction exhaust gas pipeline, and the other end is connected to the exhaust gas fan through the pipeline; the exhaust gas fan outlet end is connected to the exhaust pipe, and the exhaust pipe is connected to the exhaust gas treatment workshop.

[0005] Preferably, a pressure transmitter is connected to the surface of the tail gas buffer tank.

[0006] Preferably, the pressure transmitter is electrically connected to the controller, and the controller is electrically connected to the exhaust fan.

[0007] Preferably, the exhaust fan is electrically connected to a frequency converter.

[0008] Furthermore, the pressure transmitter measures the real-time gas pressure in the exhaust buffer tank and feeds back the real-time data to the controller. When the pressure exceeds the set threshold, it indicates that the fan exhaust efficiency is insufficient. The controller controls the frequency converter to increase the power of the air fan to achieve exhaust enhancement.

[0009] Preferably, the exhaust pipe is connected to a detection branch pipe, and one end of the detection branch pipe is connected to a nitrogen sensor.

[0010] Preferably, the nitrogen sensor is electrically connected to the controller.

[0011] Furthermore, a nitrogen sensor measures the nitrogen content in the exhaust pipe. When the nitrogen content exceeds the standard, the controller reduces the fan frequency to reduce the exhaust volume.

[0012] The beneficial effects of the utility model are:

[0013] An exhaust buffer tank is set up to temporarily store exhaust gas. By measuring the Kia of the exhaust buffer tank, it is linked to the exhaust fan's exhaust volume, which can be adjusted in real time according to the exhaust gas emission volume of production, and the exhaust pressure of the fan can be kept stable and controllable. A nitrogen sensor is set at the tail end to avoid the problem of excessive wind force sucking out the nitrogen in the storage tank. It not only solves the safety risk of insufficient exhaust volume, but also controls the environmental protection treatment cost of excessive exhaust volume, and also reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] In the figure: exhaust gas buffer tank 1, exhaust gas fan 2, exhaust pipe 3, pressure transmitter 4, controller 5, detection branch pipe 6, nitrogen sensor 7. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, the exhaust gas flow control system for a pharmaceutical reaction tank includes an exhaust gas buffer tank 1, one end of the exhaust gas buffer tank 1 is connected to the reaction exhaust gas pipeline, and the other end is connected to the exhaust gas fan 2 through the pipeline; the exhaust gas fan 2 is connected to the exhaust pipe 3 at the outlet end, and the exhaust pipe 3 is connected to the exhaust gas treatment workshop.

[0018] Preferably, a pressure transmitter 4 is connected to the surface of the tail gas buffer tank 1 .

[0019] Furthermore, the pressure transmitter 4 uses the diffused silicon gas pressure transmitter of Air Sensor model AE-T.

[0020] Preferably, the pressure transmitter 4 is electrically connected to the controller 5 , and the controller 5 is electrically connected to the exhaust fan 2 .

[0021] Furthermore, the controller 5 uses an 80C51 single chip microcomputer.

[0022] Preferably, the exhaust fan 2 is electrically connected to a frequency converter.

[0023] Furthermore, the exhaust fan 2 inverter uses the fan inverter model of Chuangshijia ZS-350.

[0024] Preferably, the exhaust pipe 3 is connected to a detection branch pipe 6 , and one end of the detection branch pipe 6 is connected to a nitrogen sensor 7 .

[0025] Preferably, the nitrogen sensor 7 is electrically connected to the controller 5 .

[0026] Furthermore, the nitrogen sensor 7 uses the RS485 industrial N2 gas leak online detection concentration transmitter with model RS-N2 from Jianda Renke.

[0027] The working principle of this utility model is:

[0028] The pressure transmitter measures the real-time gas pressure in the exhaust buffer tank 1 and feeds the real-time data back to the controller 5. When the pressure exceeds the set threshold, it indicates that the exhaust efficiency of the fan is insufficient. The controller 5 controls the frequency converter to increase the power of the air fan to achieve exhaust enhancement; the nitrogen sensor 7 measures the nitrogen content in the exhaust pipe 3. When the nitrogen content exceeds the standard, the controller 5 reduces the fan frequency to reduce the exhaust volume.

[0029] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. Tail gas flow control system for pharmaceutical reaction tank, characterized by: The exhaust gas buffer tank (1) comprises an exhaust gas buffer tank (1), one end of which is connected to a reaction exhaust gas pipeline, and the other end of which is connected to an exhaust gas fan (2) through a pipeline; the exhaust gas fan (2) has an outlet end connected to an exhaust pipe (3), and the exhaust pipe (3) is connected to an exhaust gas treatment workshop.

2. The tail gas flow control system for a pharmaceutical reaction tank according to claim 1, characterized in that: A pressure transmitter (4) is connected to the surface of the tail gas buffer tank (1).

3. The tail gas flow control system for a pharmaceutical reaction tank according to claim 2 is characterized in that: The pressure transmitter (4) is electrically connected to the controller (5), and the controller (5) is electrically connected to the exhaust fan (2).

4. The tail gas flow control system for a pharmaceutical reaction tank according to claim 3, characterized in that: The exhaust fan (2) is electrically connected to a frequency converter.

5. The tail gas flow control system for a pharmaceutical reaction tank according to claim 1, characterized in that: The exhaust pipe (3) is connected to a detection branch pipe (6), and one end of the detection branch pipe (6) is connected to a nitrogen sensor (7).

6. The tail gas flow control system for a pharmaceutical reaction tank according to claim 5, characterized in that: The nitrogen sensor (7) is electrically connected to the controller (5).

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