CN207446954U - A kind of energy-saving soil pollution thermal desorption device - Google Patents

Abstract

The utility model discloses an energy-saving thermal desorption device for soil pollution, which comprises a box body, a feeding hopper, a crushing box, a stirring rod, a drying pipe, a hot air pipe, a conveyor belt, a baffle, a heating plate, a rotating shaft, and a rotating blade. , outlet, motor and support feet. The beneficial effects of the utility model are: the stirring rod will crush the large-grained soil that enters the crushing box through the feed hopper, and crush the soil into small particles, which is convenient for drying and thermal desorption of the soil. The soil is dried and pretreated to remove most of the water in the soil first, which can save more heat during thermal desorption. The hot air pipe is equipped with a gas filter device, which can prevent the harmful gas generated by thermal desorption from spreading into the air. In the process, the heating plates are respectively arranged on the upper and lower sides of the rotating shaft to heat the soil, so as to perform a more comprehensive thermal desorption of the soil and improve the efficiency of soil thermal desorption. Discharge from the outlet.

Description

An energy-saving soil pollution thermal desorption device

technical field

The utility model relates to a desorption device, in particular to an energy-saving thermal desorption device for soil pollution, which belongs to the technical field of soil remediation treatment.

Background technique

A large amount of soil in my country has been polluted by organic pollutants such as benzene, toluene, xylene, ethylbenzene and TPH. As the public gradually understands the environmental and health hazards of organic pollutants, there is an urgent need for economical and effective methods to deal with these toxic substances. The main remediation technologies for organic pollutant-contaminated soil include biological remediation, chemical remediation, and physical remediation. In comparison, physical remediation or chemical remediation has wider applicability, especially for high-concentration, multi-component organic pollution sites. Among many physical or chemical remediation technologies, thermal desorption is recognized as a mature and reliable technology for treating organic matter-contaminated soil.

As a non-combustion technology, thermal desorption has a wide range of pollutant treatment, movable equipment, and reusable soil after restoration. Especially for chlorine-containing organic substances, the non-oxidative combustion treatment method can avoid the formation of dioxins. Heating or indirect heating is the process of heating contaminated soil to a sufficient temperature to volatilize or separate the organic pollutants contained in it. Thermal desorption is a physical separation process that transforms pollutants from one phase to another. Controlling the temperature and material residence time of the thermal desorption system can selectively volatilize the target pollutants. The current thermal desorption device uses direct heating for thermal desorption, but the heat source gas and the volatilized pollutant gas are mixed with each other. , which increases the treatment cost of subsequent tail gas, and the system has high energy consumption and low heat utilization rate, and the soil contains a lot of water, which cannot be dried. When thermal desorption is performed, a large amount of heat will be consumed for evaporating water. , and the processing effect is also poor.

Utility model content

The purpose of this utility model is to provide an energy-saving soil pollution thermal desorption device in order to solve the above problems.

The utility model achieves the above object through the following technical solutions: an energy-saving thermal desorption device for soil pollution, including a box body, a feeding hopper, a crushing box, a stirring rod, a drying pipe, a hot air pipe, a conveyor belt, a baffle, Heating plate, rotating shaft, rotating blade, discharge port, motor and supporting feet; the inside of the box is equipped with stirring rod, drying pipe, conveyor belt, baffle and rotating shaft, and the outside of the box is equipped with a feeding hopper, heating Air duct and support feet, the feed hopper is installed on the upper right side of the box, the feed hopper is connected with the crushing box, the crushing box is fixed on the upper right of the conveyor belt, and the stirring rod is placed on the In the crushing box, the drying pipe is fixed on the upper surface of the box, the drying pipe is located directly above the conveyor belt, the conveyor belt is set between the drying pipe and the baffle, and the baffle is connected to the box In the middle of the box, the baffle divides the box into upper and lower layers, the heating plate is installed on the baffle and the box respectively, the rotating shaft is located at the bottom of the box, and the rotating shaft is connected to the side wall of the box , the rotating blade is fixed together with the rotating shaft by welding, the discharge port is installed at the lower right side of the box, the motor is arranged at the bottom of the box, the supporting feet are connected under the box, the The supporting feet are respectively located at the four corners of the box body.

Preferably, in order to facilitate the drying and thermal desorption treatment of the soil, the stirring rod crushes the large-grained soil that enters the crushing box through the feed hopper.

Preferably, in order to save more heat during thermal desorption, the drying pipe performs drying pretreatment on the soil on the conveyor belt.

Preferably, in order to prevent the harmful gas generated by thermal desorption from spreading into the air, the hot air pipe is provided with a gas filter device.

Preferably, in order to perform more comprehensive thermal desorption of the soil, the heating plates are respectively arranged on the upper and lower sides of the rotating shaft to heat the soil.

Preferably, in order to move the soil from the left end to the right end, the motor drives the rotating shaft to rotate through a belt.

The beneficial effects of the utility model are: the design of the energy-saving thermal desorption device for soil pollution is reasonable, and the stirring rod will crush the large-grained soil that enters the crushing box through the feeding hopper, and crush the large-grained soil into small particles, which is convenient for processing The soil is dried and thermally desorbed. The drying pipe performs drying pretreatment on the soil on the conveyor belt. Most of the water in the soil is removed first, which can save more heat during thermal desorption. The hot air pipe is equipped with a gas Filtering device, benzene, toluene, xylene, ethylbenzene and other harmful substances in the soil volatilize from the soil to form a gaseous state. The filtering device can prevent these harmful gases from spreading into the air. Heating, to carry out more comprehensive thermal desorption of the soil, improve the heat utilization rate, and improve the efficiency of soil thermal desorption, the motor drives the shaft to rotate through the belt, so that the soil moves from the left end to the right end, and then the thermal desorption treated soil Discharge from the outlet.

Description of drawings

Fig. 1 is a structural representation of the utility model;

In the figure: 1. Box body, 2. Feed hopper, 3. Crushing box, 4. Stirring rod, 5. Drying pipe, 6. Hot air pipe, 7. Conveyor belt, 8. Baffle plate, 9. Heating plate, 10, rotating shaft, 11, rotating blade, 12, discharge opening, 13, motor and 14, supporting foot.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1, an energy-saving thermal desorption device for soil pollution, including a box body 1, a feed hopper 2, a crushing box 3, a stirring rod 4, a drying pipe 5, a hot air pipe 6, a conveyor belt 7, and a baffle 8 , heating plate 9, rotating shaft 10, rotating blade 11, discharge port 12, motor 13 and supporting foot 14; Described box body 1 interior is provided with stirring rod 4, drying pipe 5, conveyor belt 7, baffle plate 8 and rotating shaft 10 , the outside of the box 1 is provided with a feed hopper 2, a hot air pipe 6 and a support foot 14, the feed hopper 2 is installed on the upper right side of the box 1, and the feed hopper 2 is connected with the crushing box 3 Together, the crushing box 3 is fixed on the upper right side of the conveyor belt 7, the stirring rod 4 is placed in the crushing box 3, the drying pipe 5 is fixed on the upper surface of the box body 1, and the drying pipe 5 is located at Directly above the conveyor belt 7, the conveyor belt 7 is arranged between the drying pipe 5 and the baffle 8, and the baffle 8 is connected to the middle part of the box body 1, and the box body 1 is divided into upper and lower parts by the baffle plate 8. Layer, the heating plate 9 is respectively installed on the baffle 8 and the box body 1, the rotating shaft 10 is located at the bottom of the box body 1, the rotating shaft 10 is connected to the side wall of the box body 1, and the rotating blade 11 passes through Welding is fixed together with the rotating shaft 10, the discharge port 12 is installed at the lower right side of the box body 1, the motor 13 is arranged at the bottom of the box body 1, and the supporting feet 14 are connected below the box body 1, so that The supporting legs 14 are respectively located at the four corners of the casing 1, and the stirring rod 4 crushes the large-grained soil that enters the crushing box 3 through the feed hopper 2, and crushes the large-grained soil into small particles, which is convenient for the soil. Drying and thermal desorption treatment, the drying pipe 5 performs drying pretreatment on the soil on the conveyor belt 7, first removes most of the moisture in the soil, and can save more heat during thermal desorption, and the hot air pipe 6 is provided with a gas filter device, harmful substances such as benzene, toluene, xylene, ethylbenzene in the soil volatilize from the soil to form a gaseous state, and the filter device can prevent these harmful gases from spreading into the air. The heating plates 9 are respectively arranged on The upper and lower sides of the rotating shaft 10 heat the soil to perform more comprehensive thermal desorption of the soil, improve the heat utilization rate, and improve the soil thermal desorption efficiency. The motor 13 drives the rotating shaft 10 to rotate through the belt, so that the soil starts from the left end. Move to the right end, and then the soil treated by thermal desorption is discharged from the discharge port 12.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. An energy-saving soil pollution thermal desorption device is characterized in that: it comprises a casing (1), a feed hopper (2), a pulverizing box (3), a stirring rod (4), a drying pipe (5), a thermal Air duct (6), conveyor belt (7), baffle plate (8), heating plate (9), rotating shaft (10), rotating blade (11), discharge port (12), motor (13) and supporting foot ( 14); the inside of the box (1) is provided with a stirring rod (4), a drying pipe (5), a conveyor belt (7), a baffle plate (8) and a rotating shaft (10), and the outside of the box (1) A feed hopper (2), a hot air pipe (6) and a support foot (14) are provided, the feed hopper (2) is installed on the upper right side of the box body (1), and the feed hopper (2) It is connected with the crushing box (3), the crushing box (3) is fixed on the upper right side of the conveyor belt (7), the stirring rod (4) is arranged in the crushing box (3), and the drying pipe (5 ) is fixed on the upper surface of the box body (1), the drying pipe (5) is located directly above the conveyor belt (7), and the conveyor belt (7) is arranged between the drying pipe (5) and the baffle plate (8) Between, the baffle (8) is connected in the middle of the box (1), the baffle (8) divides the box (1) into upper and lower layers, and the heating plates (9) are respectively installed on the baffle On the plate (8) and the box body (1), the rotating shaft (10) is located at the bottom of the box body (1), the rotating shaft (10) is connected on the side wall of the box body (1), and the rotating blade ( 11) It is fixed together with the rotating shaft (10) by welding, the discharge port (12) is installed at the lower end of the right side of the box body (1), and the motor (13) is arranged at the bottom of the box body (1), so The supporting feet (14) are connected under the box body (1), and the supporting feet (14) are respectively located at the four corners of the box body (1). 2. A kind of energy-saving soil pollution thermal desorption device according to claim 1, characterized in that: the stirring rod (4) will pass through the feeding hopper (2) into the large particle soil in the crushing box (3) To crush. 3. An energy-saving soil pollution thermal desorption device according to claim 1, characterized in that: the drying pipe (5) performs drying pretreatment on the soil on the conveyor belt (7). 4. An energy-saving soil pollution thermal desorption device according to claim 1, characterized in that: said hot air pipe (6) is provided with a gas filter device. 5. An energy-saving soil pollution thermal desorption device according to claim 1, characterized in that: the heating plates (9) are respectively arranged on the upper and lower sides of the rotating shaft (10) to heat the soil. 6. An energy-saving soil pollution thermal desorption device according to claim 1, characterized in that: the motor (13) drives the rotating shaft (10) to rotate through a belt.