Waste gas condensing device for furfural production workshop

Abstract

The utility model discloses a waste gas condensing device for a furfural production workshop. The waste gas condensing device comprises a condensing water tank capable of adjusting the condensing temperature, a hot air box for producing high-temperature gas, a condensing pipe and a gas circulation pipeline which are vertically arranged, and a PLC (Programmable Logic Controller), the condensation pipe is arranged outside the gas circulation pipeline in a sleeving manner; the lower portion of the condensation pipe is communicated with the condensation water tank through a water inlet pipe, and the upper portion of the condensation pipe is communicated with the condensation water tank through a water outlet pipe. The hot air box is communicated with the upper part of the gas circulation pipeline through a gas inlet pipe; according to the utility model, the hot air blowing structure is arranged to clean attachments on the pipeline, so that the pipeline is prevented from being corroded due to residual attachments, the condensation effect is ensured, and meanwhile, waste gas circulates in a gas pipeline inside the condensation pipeline instead of circulating in a large range in the condensation box, so that the waste gas is ensured to be condensed in a concentrated manner; and the condensation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of furfural production equipment, in particular to a waste gas condensing device for a furfural production workshop. Background Art

[0002] The furfural production process is simple, and it is formed through raw material processing, hydrolysis, distillation, and refining. However, a certain amount of waste gas will be generated during the distillation process. If it is discharged directly, it will cause pollution to the surrounding environment. Therefore, waste gas condensation equipment is needed to recycle and treat the waste gas generated during the furfural production process.

[0003] The exhaust gas condensing device is a commonly used exhaust gas treatment equipment, which is used to recover recyclable substances in the exhaust gas. The exhaust gas condensing recovery device generally lowers the exhaust gas temperature so that the recyclable substances in the exhaust gas are condensed and collected in the condenser, while recovering the heat energy in the exhaust gas.

[0004] Since most of the substances in the exhaust gas will be adsorbed on the surface of the condenser after condensation, and some substances in the exhaust gas have a certain viscosity after condensation, it is difficult to clean them during cleaning, especially for condensation equipment using spiral pipes or corrugated pipes to extend the condensation time of the exhaust gas. If the pipes are attached to the surface for a long time, it is easy to cause corrosion of the pipes and affect the condensation effect. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an exhaust gas condensing device for a furfural production workshop, which can clean the impurities attached to the pipeline and avoid the pipeline from being corroded to affect the condensation effect.

[0006] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0007] A waste gas condensing device for a furfural production workshop comprises a condensing water tank with adjustable condensing temperature, a hot air box for producing high-temperature gas, a vertically arranged condensing pipe and a gas circulation pipeline, and a PLC controller; the condensing pipe is sleeved on the outside of the gas circulation pipeline; the lower part of the condensing pipe is connected to the condensing water tank through a water inlet pipe, and the upper part of the condensing pipe is connected to the condensing water tank through a water outlet pipe; the hot air box is connected to the upper part of the gas circulation pipeline through an air inlet pipe.

[0008] The above-mentioned waste gas condensing device for furfural production workshop, the condensation water tank is provided with a refrigerator for adjusting the internal condensate to a suitable condensation temperature, and the controlled end of the refrigerator is connected to the output end of the PLC controller.

[0009] The above-mentioned waste gas condensing device for furfural production workshop, the inside of the hot air box is inert gas that is not easy to participate in the reaction, and a hot air blower is arranged inside the hot air box to heat the inert gas and facilitate the removal of condensate with strong viscosity inside the gas flow pipeline.

[0010] In the above-mentioned waste gas condensing device for furfural production workshop, a first solenoid valve for controlling the condensate to enter the condensing pipe is arranged on the water inlet pipe, and a controlled end of the first solenoid valve is connected to the output end of the PLC controller.

[0011] In the above-mentioned waste gas condensing device for furfural production workshop, a second solenoid valve for controlling the entry of waste gas and the discharge of condensate is arranged at the lower part of the gas circulation pipeline, and the controlled end of the second solenoid valve is connected to the output end of the PLC controller.

[0012] In the above-mentioned waste gas condensing device for furfural production workshop, a temperature sensor for detecting the temperature of the initial waste gas is also arranged at the lower part of the gas circulation pipeline, and the output end of the temperature sensor is connected to the input end of the PLC controller.

[0013] The above-mentioned waste gas condensing device for furfural production workshop, the upper part of the gas circulation pipeline is provided with a third solenoid valve which controls the exhaust gas discharge when opened and controls the overflow of the sprayed hot gas when closed, and the controlled end of the third solenoid valve is connected to the output end of the PLC controller.

[0014] The above-mentioned waste gas condensing device for furfural production workshop is provided with a fourth solenoid valve on the air inlet pipe for controlling the gas ejected from the hot air box to remove condensate attached to the inner wall of the gas circulation pipeline, and the controlled end of the fourth solenoid valve is connected to the output end of the PLC controller.

[0015] In the above-mentioned waste gas condensing device for furfural production workshop, the top and bottom ends of the condensing tube are respectively installed with sealing covers for sealing the gap between the condensing tube and the gas circulation pipeline and preventing condensed water from flowing out.

[0016] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model is as follows.

[0017] The utility model provides an exhaust gas condensing device for a furfural production workshop, which cleans attachments on the pipeline by arranging a hot air blowing structure, thereby avoiding corrosion of the pipeline due to residual attachments and ensuring the condensation effect, and at the same time allows the exhaust gas to flow in the gas pipeline inside the condensation pipeline instead of circulating in a large range in the condensation box, thereby ensuring that the exhaust gas can be concentratedly condensed and improving the condensation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the specific structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the specific structure of the gas circulation pipeline described in the utility model.

[0020] Among them: 1. condensation water tank, 2. condensation pipe, 3. hot air box, 4. gas circulation pipeline, 5. water inlet pipe, 6. water outlet pipe, 7. first solenoid valve, 8. air inlet pipe, 9. second solenoid valve, 10. third solenoid valve, 11. fourth solenoid valve, 12. sealing cover. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] A waste gas condensing device for furfural production workshop, such as Figure 1 to Figure 2 As shown, it includes a condensation water tank 1, a hot air box 3, a vertically arranged condenser 2 and a gas circulation pipeline 4, and a PLC controller. The condenser 2 is mounted on the outside of the gas circulation pipeline 4, the lower part of the condenser 2 is connected to the condensation water tank 1 through the water inlet pipe 5, the upper part of the condenser 2 is connected to the condensation water tank 1 through the water outlet pipe 6, and the hot air box 3 is connected to the upper part of the gas circulation pipeline 4 through the air inlet pipe 8.

[0023] A refrigerator is arranged inside the condensation water tank 1, which can adjust the internal condensate to a suitable condensation temperature, and the controlled end of the refrigerator is connected to the output end of the PLC controller.

[0024] The hot air box 3 contains inert gas that is not easy to participate in the reaction. A hot air blower is arranged inside to heat the inert gas, so as to remove the strong sticky attachments inside the gas flow pipeline 4.

[0025] A first solenoid valve 7 is provided on the water inlet pipe 5, and a controlled end of the first solenoid valve 7 is connected to an output end of the PLC controller.

[0026] A second solenoid valve 9 for controlling the entry of exhaust gas and the discharge of condensate is provided at the lower part of the gas flow pipeline 4 , and a controlled end of the second solenoid valve 9 is connected to an output end of the PLC controller.

[0027] A temperature sensor for detecting the temperature of the initial exhaust gas is also provided at the lower part of the gas circulation pipeline 4. The output end of the temperature sensor is connected to the input end of the PLC controller, and the PLC controller then sends a command to the condensate tank 1 to ensure that the temperature of the condensate can reach the condensation point of the substances in the exhaust gas.

[0028] A third solenoid valve 10 for controlling exhaust gas discharge is arranged on the upper part of the gas circulation pipeline 4. When the third solenoid valve 10 is in a closed state, it can prevent the injection gas from escaping through the exhaust gas outlet. The controlled end of the third solenoid valve 10 is connected to the output end of the PLC controller.

[0029] The air inlet pipe 8 is provided with a fourth solenoid valve 11 for controlling the ejected gas to enter the gas circulation pipeline 4 , and a controlled end of the fourth solenoid valve 11 is connected to an output end of the PLC controller.

[0030] The top and bottom ends of the condenser tube 2 are respectively provided with sealing covers 12 for sealing the gap between the condenser tube 2 and the gas flow pipeline 4, thereby preventing condensed water from flowing out.

[0031] During the condensation process, the exhaust gas enters from the bottom of the gas circulation pipeline 4. At this time, the second solenoid valve 9 and the third solenoid valve 10 are in the open state. At the same time, the temperature sensor feeds back the initial temperature of the exhaust gas to the PLC controller, and ensures that the temperature in the condensation water tank 1 reaches the temperature required for the condensation of the exhaust gas. The first solenoid valve 7 is controlled to open to allow water to flow into the condensation pipe 2, and the condensed water is ensured to circulate. The condensate is adsorbed on the inner wall of the gas circulation pipeline 4, and the non-condensable gas is discharged upward.

[0032] After condensation is completed, the third solenoid valve 10 is closed and the fourth solenoid valve 11 is opened to allow the hot air in the hot air box 3 to flow downward into the gas circulation pipeline 4, and the substances attached to the inner wall of the gas circulation pipeline 4 are blown off to the waste collection tank below to avoid residual substances inside the gas circulation pipeline 4 causing pipeline corrosion.

[0033] The utility model provides an exhaust gas condensing device for a furfural production workshop, which cleans attachments on the pipeline by arranging a hot air blowing structure, thereby avoiding corrosion of the pipeline due to residual attachments and ensuring the condensation effect, and at the same time allows the exhaust gas to flow in the gas pipeline inside the condensation pipeline instead of circulating in a large range in the condensation box, thereby ensuring that the exhaust gas can be concentratedly condensed and improving the condensation efficiency.

Claims

1. A waste gas condensing device for a furfural production workshop, characterized in that: The invention comprises a condensing water tank (1) with adjustable condensing temperature, a hot air box (3) for producing high-temperature gas, a vertically arranged condensing pipe (2) and a gas circulation pipeline (4), and a PLC controller; the condensing pipe (2) is sleeved on the outside of the gas circulation pipeline (4); the lower part of the condensing pipe (2) is connected to the condensing water tank (1) through a water inlet pipe (5), and the upper part of the condensing pipe (2) is connected to the condensing water tank (1) through a water outlet pipe (6); the hot air box (3) is connected to the upper part of the gas circulation pipeline (4) through an air inlet pipe (8).

2. The waste gas condensing device for furfural production workshop according to claim 1, characterized in that: The condensation water tank (1) is internally provided with a refrigerator for adjusting the internal condensate to a suitable condensation temperature, and a controlled end of the refrigerator is connected to an output end of a PLC controller.

3. The waste gas condensing device for furfural production workshop according to claim 1, characterized in that: The hot air box (3) contains an inert gas that is not easily involved in the reaction. The hot air box (3) is provided with a hot air blower for heating the inert gas and removing the condensate with high viscosity inside the gas flow pipeline (4).

4. The waste gas condensing device for furfural production workshop according to claim 1, characterized in that: The water inlet pipe (5) is provided with a first solenoid valve (7) for controlling the condensate to enter the condensation pipe (2), and a controlled end of the first solenoid valve (7) is connected to an output end of a PLC controller.

5. The waste gas condensing device for furfural production workshop according to claim 1, characterized in that: A second solenoid valve (9) for controlling the entry of exhaust gas and the discharge of condensate is arranged at the lower part of the gas circulation pipeline (4), and a controlled end of the second solenoid valve (9) is connected to an output end of a PLC controller.

6. The waste gas condensing device for furfural production workshop according to claim 1, characterized in that: A temperature sensor for detecting the temperature of the initial exhaust gas is also provided at the lower part of the gas circulation pipeline (4), and the output end of the temperature sensor is connected to the input end of the PLC controller.

7. The waste gas condensing device for furfural production workshop according to claim 1, characterized in that: The upper part of the gas circulation pipeline (4) is provided with a third solenoid valve (10) which controls the exhaust gas discharge when opened and controls the overflow of the sprayed hot gas when closed, and the controlled end of the third solenoid valve (10) is connected to the output end of the PLC controller.

8. The waste gas condensing device for furfural production workshop according to claim 1, characterized in that: The air inlet pipe (8) is provided with a fourth solenoid valve (11) for controlling the gas ejected from the hot air box (3) to remove condensate attached to the inner wall of the gas circulation pipeline (4); the controlled end of the fourth solenoid valve (11) is connected to the output end of the PLC controller.

9. The waste gas condensing device for furfural production workshop according to claim 1, characterized in that: The top and bottom ends of the condenser tube (2) are respectively provided with sealing covers (12) for sealing the gap between the condenser tube (2) and the gas flow pipeline (4) and preventing condensed water from flowing out.

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