TWI791188B - Complete circulated drying equipment of indirect exhaust gas thermal desorption - Google Patents

Abstract

The present invention provides a complete circulated drying equipment of indirect exhaust gas thermal desorption, including a heating chamber; a roller which penetrates and pivots on the heating chamber. The roller has a feeding end and a discharge end; a feeding cover which pivots on the feeding end of the roller. The feeding cover has an exhaust port and a feeding port; a discharge cover which pivots on the discharge end of the roller, connects with the heating chamber and the roller, and equipped with a discharge port at one end; and a drive unit which connects and drives the roller to rotate. Accordingly, the present invention can lead after-heat produced from combustion or secondary combustion of the related combustion system, such as boiler, incinerator or rotary kiln, of the industries such as electroplating, papermaking, chemistry, textile, dyeing and finishing into the heating chamber. The heating chamber will then lead the heat directly or through the discharge cover to the roller by thermal radiation or convection. The roller brings in the recyclables ready for combustion and recycling such as contaminated soil via the feeding end to process thermal desorption and drying. It makes the contaminant and moisture in the recyclables be volatilized by heat for recycling, which extensively recycles thermal energy and processes the recyclables to reduce the loss of thermal energy and the cost for drying and thermal desorption. It simultaneously improves efficacy of recycling to achieve the efficacy of energy saving and environmental protection.

Description

Indirect thermal desorption exhaust gas full cycle drying equipment

The present invention provides an indirect thermal desorption exhaust gas full cycle drying equipment, especially a device that can recover the heat energy of combustion or secondary combustion in various industries, and perform thermal desorption and drying on the recyclables.

According to, incineration, which is based on the definition of industrial waste storage and removal treatment methods and facility standards, refers to the use of high-temperature combustion to convert industrial waste into stable gases or substances. It can be toxic substances, such as: Polychlorinated biphenyl (PCB), organic solvents, etc. can be burned and decomposed, and can also be used to burn and gasify waste, so as to reduce the amount that needs to be buried, so it is widely used in most industries, such as: electroplating, papermaking, chemistry, textiles , dyeing and finishing, etc.; especially for those whose production process produces toxic emissions, secondary combustion is required to completely destroy the toxic substances. China's Environmental Protection Agency has also formulated general waste recycling and removal methods for this, Relevant regulations such as dioxin control and emission standards for small and medium-sized waste incinerators, to standardize the process, temperature, time, temperature, flow mixing, flow and other regulations of the incineration method, in order to reduce the emission of toxic substances, in order to maintain the health and safety of the environment and organisms .

The general hot exhaust gas is mostly passed through the secondary combustion furnace in the air pollution prevention and control equipment. After being heated to 800~1000°C for reaction, it is then cooled to about 200~250°C by a heat exchanger and then discharged from the exhaust pipe. The heat energy has not been effectively recovered and utilized, which caused a large amount of heat energy loss. Therefore, the heat treatment process cannot be said to meet the demands of energy conservation and environmental protection. It should be further recycled and utilized in related processes or other industries in order to achieve energy conservation and carbon reduction. target.

In view of this, our inventors are concentrating on further research on the recovery of heat energy, and the application of heat transfer and drying after recovery, and proceed to research and development and improvement, hoping to solve the above problems with a better invention, and in After continuous testing and modification, the present invention has come out.

Yes, the purpose of the present invention is to solve the aforementioned problems. In order to achieve the above purpose, our inventors provide a kind of indirect thermal desorption exhaust gas full cycle drying equipment, which includes: a heating chamber, which is provided with an air inlet and an air outlet; a drum, which runs through and is pivotally installed in the heating chamber, and one end of the drum is provided with a feed end, and the other end is provided with a discharge end; a feed cover, which is pivotally installed at the inlet of the drum At the material end, the feed cover is provided with an exhaust port and a feed port; a discharge cover is pivotally arranged at the discharge end of the drum, and the discharge cover is connected to the air outlet and the A drum, one end of the discharge cover is provided with a discharge port, and the heating chamber is used to guide hot air to the discharge cover and enter the drum; and a driving device, which is connected and driven to rotate the drum.

According to the above mentioned indirect thermal desorption waste gas full circulation drying equipment, wherein, the drum is arranged at an incline, and the feed end of the drum is higher than the discharge end.

According to the above-mentioned indirect thermal desorption exhaust gas full circulation drying equipment, wherein, the two ends of the drum are pierced and protruded from the heating chamber.

According to the above-mentioned indirect thermal desorption exhaust gas full circulation drying equipment, it further includes at least one receiving seat, and at least one supporting wheel is provided on the outer edge of the drum, and the receiving seats are respectively received on the supporting wheels.

According to the above-mentioned indirect thermal desorption waste gas full circulation drying equipment, wherein, the air outlet is arranged on the top of the heating chamber, and the air outlet is connected with a duct, and the duct is connected to the end opposite to the air outlet. connected to the discharge hood.

According to the indirect thermal desorption waste gas full circulation drying equipment mentioned above, wherein, the inner wall of the drum is further provided with at least one convex wall protruding inward at its middle section.

According to the above-mentioned indirect thermal desorption exhaust gas full circulation drying equipment, wherein, the inner wall of the drum is provided with at least one spiral guide vane protruding inwards at the sections at both ends thereof.

According to the above-mentioned indirect thermal desorption waste gas full circulation drying equipment, a transmission element is further provided on the outer edge of the drum, and the driving device is engaged and driven on the transmission element to rotate the drum.

According to the above-mentioned indirect thermal desorption waste gas full circulation drying equipment, wherein, the drum is between the pivot joint with the heating chamber, and the drum is between the pivot joints with the inlet cover and the discharge cover , and are respectively provided with a sealing assembly.

According to the above mentioned indirect thermal desorption exhaust gas full circulation drying equipment, wherein, the heating chamber is further connected with at least one heating device, and the heating device supplies heat to the heating chamber.

By the above description and setting, it is obvious that the present invention mainly has the following advantages and effects, which are detailed as follows one by one:

1. Through the setting of the heating chamber and the drum, the present invention can burn or secondary burn the relevant combustion systems in industries such as electroplating, papermaking, chemical, textile, dyeing and finishing, such as: boilers, incinerators, rotary kilns, etc. The waste heat generated by combustion is introduced into the heating chamber, and the heating chamber can directly or through the discharge hood to introduce the heat into the drum through heat radiation or convection, and the drum can input the recyclables to be burned and recovered through the feed inlet (such as: Contaminated soil, reservoir sludge) are subjected to thermal desorption and drying, so that the pollutants and moisture in the recyclables are volatilized by heat, and then the recyclables output from the discharge port can be recycled. Therefore, when the recyclables are the aforementioned soil or In the case of sludge, it can be made into building materials and other products after thermal desorption and drying. It can also effectively recycle the recyclables, and can recover heat energy on a large scale to treat the recyclables, so that there is no need to set up special The equipment for recyclables treatment and the heating process for thermal desorption and drying can reduce heat energy loss and energy consumption, and can reduce the cost of drying and thermal desorption process and land occupation, while improving recovery The effectiveness of the device in order to achieve the effect of energy saving and environmental protection.

Regarding the technical means of our inventors, several preferred embodiments will be described in detail below in conjunction with the drawings, so as to provide an in-depth understanding and recognition of the present invention.

Please refer to Figures 1 to 3, the present invention is an indirect thermal desorption waste gas full cycle drying equipment, which includes:

A heating chamber 1, which is provided with an air inlet 11 and an air outlet 12;

A drum 2, which runs through and is pivotally installed in the heating chamber 1, one end of the drum 2 is provided with a feed end 21, and the other end is provided with a discharge end 22;

A feed cover 3, which is pivotally arranged at the feed end 21 of the drum 2, the feed cover 3 is provided with an exhaust port 31 and a feed port 32;

A discharge cover 4, which is pivotally arranged at the discharge end 22 of the drum 2, and the discharge cover 4 is connected to the air outlet 12 and the drum 2, and one end of the discharge cover 4 is provided with a discharge port 41, and the heating chamber 1 is used to guide hot air to the discharge cover 4 and enter the drum 2; and

A driving device 5 is connected and driven to rotate the drum 2 .

In this way, the present invention can introduce an incineration device (not shown in the figure), such as: a boiler, an incinerator, a rotary kiln, etc., through the heat energy generated by combustion into the air inlet 11 of the heating chamber 1 through a pipeline connection. , so as to provide the heating chamber 1 with high temperature. In one embodiment, it is also possible to directly heat in the heating chamber 1 under the situation that the heating chamber 1 is not provided with an air inlet 11. The drum 2 is directly heated through heat radiation or heat convection, and the heat can also be directly guided into the drum 2 through the discharge cover 4 through the discharge port 22 through the air outlet 12, so that the drum 2 can be fully and evenly heated. In this way, the recyclables required for thermal desorption or drying can be manually or automatically input from the feed port 32, such as: reservoir sludge, polluted soil (organic sludge, inorganic sludge, heavy metals or oily dirt) Solvent soil), and the recyclate is fed from the feed port 32, and will pass through the feed cover 3 and directly enter the drum 2 through the feed end 21. At this time, the hot gas can transfer the heat energy contained in it to recyclables, and then thermally desorb the toxic substances or organic solvents contained in them. At the same time, the water contained in them can also be evaporated, and the gas desorbed by heat and the evaporated water vapor will be able to As the hot air is guided from the input direction of the discharge hood 4 to the direction of the feed hood 3, it is discharged through the exhaust port 31 provided by the feed hood 3; It is transported toward the discharge cover 4 in the direction of the discharge cover 4. After the above-mentioned thermal desorption and drying, it will be output through the discharge port 41 of the discharge cover 4, so that it can be recycled by the user for subsequent processing. When the recyclables are the aforementioned reservoir silt or contaminated soil, they can be used to make building materials after treatment for use in related buildings, but this is just an example and not a limitation.

And in the process that the recyclate moves from the feed end 21 to the discharge end 22 in the drum 2, because the hot gas system moves in the reverse direction from the discharge end 22 to the feed end 21, so that the recyclate can be reliably and fully Heated by the hot air for heat desorption and drying, and through the setting of the driving device 5, it will drive the drum 2 to rotate, and then the recyclables located in the drum 2 can be turned over, so that the recyclables can be heated evenly, so that the heat can be raised Desorption and drying performance.

In a preferred embodiment, after the recycled material can be easily input into the drum 2, it can be discharged from the discharge port 41 through the discharge end 22 and the discharge cover 4, and the hot gas can rise due to its lighter density. The characteristics of the cylinder are removed through the exhaust port 31, so the drum 2 is inclined, and the feed end 21 of the drum 2 is higher than the discharge end 22, so that the recyclables can be easily moved by their gravity from the opposite The discharge port 41 at the lower position discharges the material, and the hot air can also be discharged through the exhaust port 31 through the inside of the drum 2, so the exhaust port 31 can be arranged on the top of the feed cover 3 in one embodiment; In addition, in the process of outputting recyclables and hot air separately, through the rotation of the drum 2 by the driving device 5, the recyclables and hot air can be fully mixed, so as to improve the efficiency of thermal desorption and drying as mentioned above; In one embodiment, the exhaust port 31 can be connected with an air pollution treatment system (not shown in the figure), so as to purify the air or water vapor discharged through the exhaust port 31 to reduce air pollution.

As far as the configuration of the drum 2 is concerned, it can be smoothly rotated in order to facilitate its assembly and support, so in one embodiment, the two ends of the drum 2 protrude from the heating chamber 1, so it can be known that further The material cover 3 and the discharge cover 4 can also be located outside the heating chamber 1, so as to facilitate mutual assembly with the drum 2, and to prevent the heat energy in the heating chamber 1 from being connected to the drum 2, or the drum 2 is connected to the drum 2 respectively. The connection between the material cover 3 and the discharge cover 4 leaks and is lost, so the drum 2 is between the pivot joint with the heating chamber 1, and the drum 2 is at the pivot joint with the feed cover 3 and the discharge cover 4. Between places, a sealing assembly 6 is respectively provided. In one embodiment, it can be a fish scale plate sealing skirt, so as to seal it and also be able to rotate, but it is only for illustration and not as a limitation; And in a preferred embodiment, because the volume of the drum 2 is huge, so its weight is relatively heavy, in order to facilitate its support, so in an embodiment, at least one receiving seat 7 can be further configured, and the outer surface of the drum 2 The edge is further provided with at least one supporting wheel 23, and the receiving seats 7 are respectively received on the supporting wheels 23, so that the drum 2 can be supported by the receiving seats 7, and the supporting wheels 23 can be rolled on the receiving seats 7, so that The driving device 5 can smoothly drive the drum 2 to rotate.

As far as the modular configuration of the present invention is concerned, in one embodiment, a base 8 can be provided on which the heating chamber 1, the feeding cover 3, the discharging cover 4 and the receiving cover 4 can be erected. Seat 7, and heating chamber 1 can comprise lower chamber 13 and an upper chamber 14, and it is provided with the groove body of the semicircle shape corresponding to cylinder 2 respectively, so as to facilitate installation and to erect cylinder 2, but it is only for illustration, It is not intended to be limited by this.

In addition, regarding the communication between the air outlet 12 of the heating chamber 1 and the discharge cover 4, in one embodiment, the air outlet 12 is arranged on the top of the heating chamber 1, and the air outlet 12 is connected with a conduit 15, the The duct 15 is connected to the discharge cover 4 at the end opposite to the air outlet 12 . In one embodiment, it can be connected to the top of the discharge cover 4 to facilitate delivery of hot air into the drum 2 .

As far as the driving device 5 rotates the drum 2, in one embodiment, a transmission element 24 is further provided on the outer edge of the drum 2. The transmission element 24 can be a gear, and the driving device 5 can be a motor. , and is provided with a set of teeth corresponding to the transmission element 24 for corresponding meshing and transmission on the transmission element 24, so as to rotate the drum 2, it is only for illustration and not as a limitation.

And as mentioned above, in order to make the driving device 5 drive the drum 2 to rotate, the drum 2 can greatly lift the recyclables, so in a preferred embodiment, as shown in Figures 4 to 7, the inside of the drum 2 The wall surface is provided with at least one convex wall 25 at the middle section thereof; the convex wall 25 can be assembled, recessed or directly formed on the inner wall of the drum 2, and it can be columnar, conical Shape, cone or geometric shape, but it is only an example, and it is not limited. In this way, when the drum 2 rotates, the recyclables can be turned up, and the contact area with the recyclables can be increased, and the heat conduction path can be shortened. , and as mentioned above, can be heated evenly to accelerate its temperature rise, so as to improve the efficiency of thermal desorption and drying; and for the benefit of entering the recyclate into the feed end 21 of the drum 2, it can be easily passed through the center of the drum 2 and toward the The discharge end 22 is moved to the discharge cover 4 for output, so the inner wall of the drum 2 is provided with at least one spiral guide vane 26 protruding inwards at the sections at both ends of the drum 2, which can pass through the rotation direction of the drum 2. When moving, the recycled material can be axially conveyed by the helical push of the spiral guide vane 26, so that when the recycled material enters the feed end 21 of the drum 2, it can be transported to the convex wall 25 at the middle section of the drum 2 and turned over. Lifting, so that it is fully and evenly heated, and when the recycled material falls to the spiral guide vane 26 near the discharge end 22 by gravity, it will be output to the discharge cover 4 and output from the discharge port 41 below the discharge cover 4.

In addition, in terms of maintaining the thermal energy of the heating chamber 1, in one embodiment, at least one heating device 16 can be connected to the heating chamber 1, and the heating device 16 is used to supply heat to the heating chamber 1 , so that the heating chamber 1 has sufficient heat energy for the processes of thermal desorption and drying.

To sum up, the technical means disclosed in the present invention can effectively solve the problems of conventional knowledge and achieve the expected purpose and effect, and it has not been published in publications before application, has not been publicly used, and has long-term progress. The invention mentioned in the patent law is correct. I file an application according to the law. I sincerely pray that Junshang Hui will give you a detailed review and grant the invention patent. I am very grateful to Dexin.

However, the above are only several preferred embodiments of the present invention, and should not limit the scope of the present invention, that is, all equivalent changes and modifications made according to the patent scope of the present invention and the content of the description of the invention are all Should still belong to the scope covered by the patent of the present invention.

1: Heating chamber 11: air inlet 12: Air outlet 13: lower cavity 14: upper cavity 15: Conduit 16: Heating device 2: Drum 21: Feed end 22: Discharge end 23: supporting wheel 24: Transmission components 25: convex wall 26: spiral guide vane 3: Feed cover 31: Exhaust port 32: feed port 4: Discharge cover 41: Outlet 5: Drive device 6:Sealing components 7: Accepting seat 8: Base

Fig. 1 is a schematic cross-sectional view of the present invention. Fig. 2 is a schematic side view of the present invention. Fig. 3 is a schematic top view of the present invention. Figure 4 is a schematic front view of the drum of the present invention. Fig. 5 is a schematic side view of the drum of the present invention. Fig. 6 is a schematic cross-sectional view of the drum of the present invention. Fig. 7 is a partial three-dimensional schematic view of the roller of the present invention at the portion provided with a convex wall.

1: Heating chamber

11: air inlet

12: Air outlet

13: lower cavity

14: upper cavity

15: Conduit

2: Drum

21: Feed end

22: Discharge end

23: supporting wheel

24: Transmission components

25: convex wall

26: spiral guide vane

3: Feed cover

31: Exhaust port

32: feed port

4: Discharge cover

41: Outlet

5: Drive device

6:Sealing components

7: Accepting seat

8: base

Claims (10)

An indirect thermal desorption exhaust gas full cycle drying equipment, which includes: a heating chamber, which is provided with an air outlet; There is a discharge end at the end; a feed cover, which is pivotally arranged at the feed end of the drum, and the feed cover is provided with an exhaust port and a feed port; a discharge cover, which is pivotally arranged at the At the discharge end of the drum, and the discharge cover is connected to the air outlet and the drum, one end of the discharge cover is provided with a discharge port, and the heating chamber is used to guide hot air to the discharge cover and enter the drum; and a driving device, which is connected and driven to rotate the drum. The indirect thermal desorption waste gas full circulation drying equipment as described in Claim 1, wherein the drum is arranged at an incline, and the feed end of the drum is higher than the discharge end. The indirect thermal desorption exhaust gas full circulation drying equipment as described in Claim 2, wherein, the two ends of the drum are pierced out of the heating chamber. As described in claim 3, the indirect thermal desorption exhaust gas full-circulation drying equipment further includes at least one receiving seat, and the outer edge of the drum is further provided with at least one support wheel, and the receiving seats are respectively received on the support wheel. The indirect thermal desorption exhaust gas full circulation drying equipment as described in claim 2, wherein the air outlet is set on the top of the heating chamber, and the air outlet is connected with a duct, and the duct is at the end opposite to the air outlet The system is connected to the discharge cover. The indirect thermal desorption exhaust gas full circulation drying equipment as described in any one of claim 1 to claim 5, wherein, the inner wall of the drum is further provided with at least one convex wall at the middle section thereof . The indirect thermal desorption exhaust gas full circulation drying equipment as described in any one of claim 1 to claim 5, wherein, the inner wall of the drum is provided with at least A helical guide vane. The indirect thermal desorption exhaust gas full circulation drying equipment as described in any one of claim 1 to claim 5, wherein, the outer edge of the drum is further provided with a transmission element, and the driving device is engaged and driven on the transmission element by which the drum is rotated. The indirect thermal desorption exhaust gas full circulation drying equipment as described in any one of claim 1 to claim 5, wherein, the drum is between the pivot joint with the heating chamber, and the drum is between the feed hood And between the pivot joint of the discharge cover, a sealing component is respectively arranged. The indirect thermal desorption exhaust gas full circulation drying equipment as described in any one of claim 1 to claim 5, wherein, the heating chamber is further connected with at least one heating device, and the heating device is used to supply heat to the Heating indoors.

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