High-temperature waste gas regeneration molecular sieve gas drying device

Abstract

The utility model belongs to the technical field of molecular sieve dehydration and drying, and discloses a high-temperature waste gas regeneration molecular sieve gas drying device which comprises two molecular sieve drying tanks, an electromagnetic valve, a tank body support, a control cabinet, a temperature and humidity sensor and a spiral gas drying pipe. According to the molecular sieve gas drying device for high-temperature waste gas regeneration, the spiral gas drying pipe is wrapped in the molecular sieve, and the device has the advantages that the spiral gas drying pipe does not reduce the flux of gas, and meanwhile, the path of the gas in the drying tank is longer, so that the gas can be in contact with the gas for sufficient time. When moist air is introduced, the spiral air drying pipe can effectively dry the moist air; when high-temperature waste gas is introduced to regenerate the molecular sieve, the spiral gas drying pipe not only can heat the regenerated molecular sieve, but also can regenerate the molecular sieve by using hot gas, so that moisture is quickly taken away, and the regeneration efficiency of the molecular sieve is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molecular sieve dehydration and drying, and relates to a high-temperature waste gas regeneration molecular sieve gas drying device. Background Art

[0002] The production and sintering of ceramics require a lot of energy consumption, which brings huge energy resource consumption challenges to ceramic companies. However, a lot of energy in the exhaust gas is wasted and not utilized.

[0003] Oxygen-enriched combustion is required in the ceramic production process, and the gas from oxygen-enriched combustion needs to be dried with a molecular sieve. However, traditional molecular sieves require additional electric heating devices to regenerate the molecular sieves during use, and this operation will further increase energy consumption.

[0004] During use, the air inlet needs to be pressurized, which will also increase energy consumption. At the same time, as the working time increases, the water adsorption of the molecular sieve also increases, which will reduce the gas flux and thus affect the combustion efficiency.

[0005] Based on the technical problems existing in the ceramic production process, the utility model develops a fully automatic high-temperature waste gas regeneration molecular sieve gas drying device. Utility Model Content

[0006] The utility model aims to provide a high-temperature waste gas regeneration molecular sieve gas drying device to solve the problems raised in the above background technology.

[0007] The technical solution of this utility model:

[0008] A high-temperature waste gas regeneration molecular sieve gas drying device, comprising two molecular sieve drying tanks, a solenoid valve, a tank support, a control cabinet, a temperature and humidity sensor and a spiral gas drying tube;

[0009] The two molecular sieve drying tanks are completely identical and symmetrical in structure. The two are connected by a tank bracket. A control cabinet is installed on the tank bracket. The control cabinet is used to control the on and off of the solenoid valve to control the corresponding entrance and exit. The control cabinet checks the drying working status of the two molecular sieve drying tanks and the working status of the molecular sieve regeneration. The control cabinet checks the temperature and humidity parameters and working status parameters in the two molecular sieve drying tanks, and then detects the real-time temperature and humidity in the two molecular sieve drying tanks;

[0010] The molecular sieve drying tank is mainly composed of an upper tank device and a lower tank device, which are connected by bolts; the upper tank device is provided with a dry gas outlet, a molecular sieve addition and exhaust gas discharge port, a temperature and humidity sensor installation port and four evenly distributed lifting ears; a spiral gas drying tube is arranged in the middle of the lower tank device, and holes smaller than the molecular sieve particle size are opened on the spiral gas drying tube, and the molecular sieve is filled between the spiral gas drying tubes; molecular sieve outlets and moist air and high-temperature gas inlets are opened on both sides of the bottom of the lower tank device; a pressure relief valve installation port is opened at the bottom of the lower tank device; a truncated cone-shaped mesh cover is provided at the connection and upper end of the spiral gas drying tube and the lower tank device to prevent the molecular sieve from entering the pipeline of the spiral gas drying tube and ensure that the molecular sieve is in the gap of the spiral gas drying tube; an inclined bottom plate is provided at the lower end of the connection between the spiral gas drying tube and the lower tank device, and the inclined bottom plate is connected to the molecular sieve outlet to facilitate the discharge of the molecular sieve;

[0011] A dry gas outlet solenoid valve is provided at the dry gas outlet on the top of the two molecular sieve drying tanks, and the over-dry gas outlet solenoid valves are connected to the dry gas pipeline; the high-temperature gas inlet solenoid valve is arranged at the molecular sieve addition and exhaust gas discharge port; a temperature and humidity sensor is installed at the temperature and humidity sensor installation port on the top of the molecular sieve drying tank, and the other temperature and humidity sensor is installed at the dry gas outlet; a humid gas inlet solenoid valve and a high-temperature gas inlet solenoid valve are provided at the humid air and high-temperature gas inlets on the bottom sides of the two molecular sieve drying tanks, the over-humid gas inlet solenoid valves are connected to the humid air pipeline, and the over-high temperature gas inlet solenoid valves are connected to the high-temperature gas inlet solenoid valve.

[0012] In the high-temperature waste gas regeneration molecular sieve gas drying device of the utility model, the spiral gas drying tube is wrapped in the molecular sieve. The advantage of the device is that the spiral gas drying tube does not reduce the gas flux, and the gas has a long path in the drying tank, and has sufficient time to contact with the gas. When humid air is introduced, the spiral gas drying tube can effectively dry the humid air; when high-temperature waste gas is introduced to regenerate the molecular sieve, the spiral gas drying tube can not only heat the regenerated molecular sieve, but also regenerate the molecular sieve with hot air, quickly take away moisture, and greatly improve the efficiency of molecular sieve regeneration.

[0013] Beneficial effects of the utility model:

[0014] 1. Small pressure drop, normal pressure operation, large flux. Compared with the traditional method of filling a large amount of molecular sieve, which leads to a decrease in gas flux and requires pressurization for normal operation, the utility model adds a spiral perforated tube device with holes in the middle of the molecular sieve, which can increase the gas path and fully contact the molecular sieve.

[0015] 2. Use high-temperature waste gas to achieve energy conservation and environmental protection by regenerating molecular sieves. Use the high-temperature waste gas generated by the enterprise to regenerate the molecular sieve, without the need for additional heating to regenerate the molecular sieve, and use waste heat to save energy and protect the environment.

[0016] 3. Automatic control, continuous operation, reliable process. The operation is controlled by a microcomputer, and the operation process is fully automatic. It can automatically detect the system environment, automatically switch the working state, and automatically regenerate the molecular sieve, and it can run automatically and continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a fully automatic high-temperature waste gas regeneration molecular sieve high-throughput gas drying device.

[0018] Figure 2 This is a schematic diagram of tank A of the fully automatic high-temperature exhaust gas regeneration molecular sieve high-throughput gas drying device.

[0019] Figure 3 Schematic diagrams of spiral hole tube devices for fully automatic high-temperature exhaust gas regeneration molecular sieve high-throughput gas drying devices, wherein (a) is an outer spiral tube, (b) is an outer spiral tube combination, (c) is an inner spiral tube, and (d) is an inner spiral tube combination.

[0020] Figure 4 A schematic diagram of a spiral hole tube device composed of inner and outer spiral hole tubes for a fully automatic high-temperature exhaust gas regeneration molecular sieve high-throughput gas drying device.

[0021] In the figure: 1 moist air duct; 2 molecular sieve outlet; 3 high temperature gas duct; 4 molecular sieve; 5 spiral gas drying tube; 6 temperature and humidity sensor; 7 dry gas duct; 8 dry gas outlet; 9 molecular sieve and waste gas discharge port; 10 control cabinet; 11 tank support; 12 moist air and high temperature gas inlet; 13 molecular sieve outlet valve; 14 pressure relief valve installation port; 15 inclined bottom plate; 16 lower tank device; 17 upper tank device; 18 lifting ear; A1 first moist gas inlet solenoid valve; A2 first high temperature gas inlet solenoid valve; A3 first dry gas outlet solenoid valve; A4 first hot waste gas outlet solenoid valve; B1 second moist gas inlet solenoid valve; B2 second high temperature gas inlet solenoid valve; B3 second dry gas outlet solenoid valve; B4 second hot waste gas outlet solenoid valve. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and technical solutions.

[0023] See also Figure 1-Figure 4 , a high-temperature waste gas regeneration molecular sieve gas drying device, comprising an A molecular sieve drying tank, a B molecular sieve drying tank, a solenoid valve, a tank support, a control cabinet, a temperature and humidity sensor and a spiral gas drying tube;

[0024] When the device is working, turn on the power switch and detect the temperature and humidity of the device. If the humidity is normal, the A molecular sieve drying tank will work first. The first moist gas inlet solenoid valve and the first hot exhaust gas outlet solenoid valve are powered on and opened to allow moist air to enter. The moist air is connected to the moist air and high-temperature gas inlet of the A molecular sieve drying tank through the moist air pipeline. The moist air flows through the spiral gas drying tube. The spiral gas drying tube can effectively dry the moist air. The dried air enters the dry gas pipeline from the dry gas outlet of the A molecular sieve drying tank and passes to another device. At the same time, the humidity of the B molecular sieve drying tank is detected. If the humidity is too high, the second moist gas inlet solenoid valve and the second dry gas outlet solenoid valve are powered on and opened to allow high-temperature exhaust gas. The high-temperature exhaust gas flows through the spiral gas drying tube. The spiral gas drying tube can not only heat and regenerate the molecular sieve, but also regenerate the molecular sieve with hot gas, quickly taking away moisture, and the exhaust gas flowing through is discharged from the molecular sieve plus exhaust gas outlet. Reduce the humidity. When the set humidity is reached, the second moist gas inlet solenoid valve and the second dry gas outlet solenoid valve are closed to complete the regeneration.

[0025] When the A molecular sieve drying tank is working, the temperature and humidity inside and at the outlet of the A molecular sieve drying tank will be detected all the time. When the humidity at both places is too high, the first moist gas inlet solenoid valve and the first hot exhaust gas outlet solenoid valve are disconnected, and the second moist gas inlet solenoid valve and the second hot exhaust gas outlet solenoid valve are powered on and opened to let in moist air; the moist air is connected to the moist air and high-temperature gas inlet of the B molecular sieve drying tank through the moist air pipeline, and the gas flows through the spiral gas drying tube. The spiral gas drying tube can effectively dry the moist air, and the dried air enters the pipeline through the dry gas outlet between the B spiral gas drying tubes to another device; at the same time, the first high-temperature gas inlet solenoid valve and the first dry gas outlet solenoid valve are powered on and opened, and the high-temperature exhaust gas is passed to regenerate the molecular sieve. The high-temperature exhaust gas flows through the spiral gas drying tube. The spiral gas drying tube can not only heat and regenerate the molecular sieve, but also regenerate the molecular sieve with hot gas, quickly taking away the moisture, and the exhaust gas that has passed through is discharged from the high-temperature exhaust gas outlet.

[0026] The A molecular sieve drying tank switches to the B molecular sieve drying tank to continue drying the air, and at the same time, the high-temperature exhaust gas is introduced into the A molecular sieve drying tank to regenerate the molecular sieve. When the requirements are met, the first high-temperature gas inlet solenoid valve and the first dry gas outlet solenoid valve are disconnected to stop the introduction of high-temperature exhaust gas. Based on the same principle, when the humidity of the B molecular sieve drying tank is too high, the B molecular sieve drying tank switches to the A molecular sieve drying tank, and at the same time, the high-temperature gas is introduced into the B molecular sieve drying tank, and the ventilation is stopped after the set value is reached.

[0027] The A molecular sieve drying tank and the B molecular sieve drying tank work alternately to dry the air continuously and efficiently.

Claims

1. A high-temperature waste gas regeneration molecular sieve gas drying device, characterized in that: The high-temperature waste gas regeneration molecular sieve gas drying device includes two molecular sieve drying tanks, a solenoid valve, a tank support, a control cabinet, a temperature and humidity sensor and a spiral gas drying tube; The two molecular sieve drying tanks are completely identical and symmetrical in structure. The two are connected by a tank bracket. A control cabinet is installed on the tank bracket. The control cabinet is used to control the on and off of the solenoid valve to control the corresponding entrance and exit. The control cabinet checks the drying working status of the two molecular sieve drying tanks and the working status of the molecular sieve regeneration. The control cabinet checks the temperature and humidity parameters and working status parameters in the two molecular sieve drying tanks, and then detects the real-time temperature and humidity in the two molecular sieve drying tanks; The molecular sieve drying tank is mainly composed of an upper tank device and a lower tank device, which are connected by bolts; the upper tank device is provided with a dry gas outlet, a molecular sieve addition and exhaust gas discharge port, a temperature and humidity sensor installation port and four evenly distributed lifting ears; a spiral gas drying tube is arranged in the middle of the lower tank device, and holes smaller than the molecular sieve particle size are opened on the spiral gas drying tube, and the molecular sieve is filled between the spiral gas drying tubes; molecular sieve outlets and moist air and high-temperature gas inlets are opened on both sides of the bottom of the lower tank device; a pressure relief valve installation port is opened at the bottom of the lower tank device; a truncated cone-shaped mesh cover is provided at the connection and upper end of the spiral gas drying tube and the lower tank device to prevent the molecular sieve from entering the pipeline of the spiral gas drying tube and ensure that the molecular sieve is in the gap of the spiral gas drying tube; an inclined bottom plate is provided at the lower end of the connection between the spiral gas drying tube and the lower tank device, and the inclined bottom plate is connected to the molecular sieve outlet to facilitate the discharge of the molecular sieve; A dry gas outlet solenoid valve is provided at the dry gas outlet on the top of the two molecular sieve drying tanks, and the over-dry gas outlet solenoid valves are connected to the dry gas pipeline; the high-temperature gas inlet solenoid valve is arranged at the molecular sieve addition and exhaust gas discharge port; a temperature and humidity sensor is installed at the temperature and humidity sensor installation port on the top of the molecular sieve drying tank, and the other temperature and humidity sensor is installed at the dry gas outlet; a humid gas inlet solenoid valve and a high-temperature gas inlet solenoid valve are provided at the humid air and high-temperature gas inlets on the bottom sides of the two molecular sieve drying tanks, the over-humid gas inlet solenoid valves are connected to the humid air pipeline, and the over-high temperature gas inlet solenoid valves are connected to the high-temperature gas inlet solenoid valve.

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