TWM633964U - Energy-recycling thermal desorption system - Google Patents

Abstract

An energy-recycling thermal desorption system includes a thermal desorption chamber, a pollution prevention chamber, a transfer pipe, a recycle pipe, an air extractor, and an exhaust pipe. The thermal desorption chamber includes a first outlet and a first inlet. The pollution prevention chamber includes a second inlet and a second outlet. The transfer pipe is connected to the first outlet and the second inlet. The recycle pipe is connected to the second outlet and the first inlet. The exhaust pipe is disposed between the pollution prevention chamber and the air extractor. The energy-recycling thermal desorption system is configured to separate gaseous pollutants from a contaminated substance, and burn the gaseous pollutants to obtain a heated gas. Accordingly, the heated gas is recycled and reused to help heat up the contaminated substance and reduce the energy cost for the thermal desorption.

Description

Energy Recovery Thermal Desorption Equipment System

The present disclosure relates to an energy recovery type thermal desorption equipment system, especially an energy recovery type thermal desorption equipment system for recovering and reusing heated gas.

The indirect thermal desorption system uses the burner to heat the pollutants to be treated in the furnace to remove and gasify the pollutants in the substances to be treated. Although the indirect thermal desorption system can effectively remove pollutants, a large amount of high-temperature gas after treatment will be directly discharged out of the system, and the high-temperature gas after treatment cannot be reused. In addition, more fuel is consumed to heat the gas to be treated in the furnace. Accordingly, the indirect thermal desorption system has relatively high operating costs.

In view of this, there is an urgent need to provide an energy recovery thermal desorption equipment system to improve the defects of conventional thermal desorption systems.

One aspect of the present invention provides an energy recovery type thermal desorption equipment system. This energy recovery thermal desorption plant system recycles heated gas to reduce fuel consumption during thermal desorption.

According to one aspect of the present invention, an energy recovery type thermal desorption equipment system is provided, comprising: a thermal desorption chamber, a pollution prevention chamber, a delivery pipeline, a recovery pipeline, an exhaust fan and a discharge pipeline. The thermal desorption chamber includes a first exhaust port and a first air inlet, and the thermal desorption chamber is configured to separate pollutant gases from pollutants. The pollution control chamber includes a second air inlet and a second exhaust port, and the pollution prevention chamber is configured to burn polluted gas to obtain heated gas. The delivery pipeline is connected to the first exhaust port and the second air inlet, and the delivery pipeline is configured to deliver the polluted gas to the pollution prevention room. The recovery pipeline is connected to the second exhaust port and the first gas inlet, and the recovery pipeline is configured to deliver a portion of the heated gas to the thermal desorption chamber. A discharge pipeline is provided between the pollution prevention room and the exhaust fan, and the discharge pipeline is configured to discharge the remainder of the heating gas.

According to some embodiments of the invention, the temperature of the polluted gas is lower than the temperature of the heated gas.

According to some embodiments of the present invention, the recovery line includes an inner liner, and an outer cladding covering the inner liner.

According to some embodiments of the present invention, the lining layer is an insulating material.

According to some embodiments of the present invention, the thermal desorption chamber and the pollution prevention chamber include a plurality of burners, wherein the burners are diesel burners, gas burners or electric burners.

According to some embodiments of the present invention, the energy recovery thermal desorption device system further includes a plurality of valves. These valves are located on the delivery pipeline, recovery pipeline and discharge pipeline.

According to some embodiments of the present invention, the number of such valves is at least three.

According to some embodiments of the present invention, the energy recovery thermal desorption device system further includes a plurality of temperature detectors. Each of the temperature detectors is respectively adjacent to the first exhaust port, the first air inlet, the second exhaust port and the second air inlet.

According to some embodiments of the present invention, the energy recovery thermal desorption device system further includes a controller. The controller is connected to the valves and the temperature detectors, and the controller is configured to control the plurality of openings of the valves according to the plurality of temperatures measured by the temperature detectors.

According to some embodiments of the present invention, the energy recovery thermal desorption device system further includes a chimney. A chimney is connected to the exhaust fan, wherein the chimney is configured to discharge the remainder of the heating gas to the outside.

The new type of energy recovery thermal desorption equipment system is used to reduce the fuel consumed by the burner and prolong the service life of the burner by returning the heated gas to the thermal desorption chamber. Thereby, the temperature in the thermal desorption chamber can be stably controlled, so as to effectively gasify and separate the polluted gas from the polluted substances, which is beneficial to the combustion and decomposition treatment.

The making and using of embodiments of the invention are discussed in detail below. It should be appreciated, however, that the embodiments provide many applicable novel concepts that can be implemented in a wide variety of specific contexts. The specific embodiments discussed are illustrative only and are not intended to limit the scope of the invention.

Please refer to FIG. 1 . According to some embodiments, FIG. 1 is a schematic diagram of a thermal desorption system 100 (ie, an energy recovery thermal desorption equipment system). The thermal desorption system 100 includes a plurality of reaction chambers, a plurality of pipelines connecting the reaction chambers, and a plurality of valves arranged on the pipelines. These reaction chambers include a thermal desorption chamber 110 and a pollution prevention chamber 120, wherein the delivery pipeline 130 connects the first exhaust port of the thermal desorption chamber 110 and the second air inlet of the pollution prevention chamber 120, and the recovery pipeline 140 The second exhaust port of the pollution prevention chamber 120 is connected with the first air inlet port of the thermal desorption chamber 110 . The thermal desorption chamber 110 includes a first combustion furnace and a first burner, wherein the first combustion furnace is configured to store pollutants, and the first burner can provide thermal energy to heat the pollutants (such as pollutants) in the first combustion furnace. Soil, etc.) to separate polluting gases from polluting substances. In some embodiments, the first burner may be an oil burner, a gas burner, an electric burner, any suitable burner or a combination of the above burners. In some embodiments, during gasification and separation of pollutants, the first temperature in the first combustion furnace may be 450° C. to 550° C. by turning on or off the first burner. Preferably, the first temperature in the first combustion furnace can be 480°C to 500°C, so as to fully separate the polluting gas from the polluting substances.

After the pollutant gas is separated, the pollutant gas in the thermal desorption chamber 110 can be transported into the pollution prevention chamber 120 through the first exhaust port, the delivery pipeline 130 and the second air inlet in sequence. In one embodiment, the delivery pipeline 130 includes an inner liner and an outer coating covering the inner liner to reduce heat loss and ensure the pipeline can transport gas. In some embodiments, the inner liner is an insulating material. In some specific examples, the insulation material includes heat-resistant insulation cotton, heat-resistant insulation mud, heat-resistant insulation bricks, other suitable heat-resistant insulation materials or a combination of the above-mentioned heat-resistant insulation materials. The delivery pipeline 130 is provided with a valve 181 and a valve 183, and these valves 181 and 183 are respectively adjacent to a first exhaust port and a second air inlet, so that the flow of the polluted gas can be controlled by the valve 181 and the valve 183 and flow rate. However, the present model is not limited thereto. Although the figure shows two valves, only one of the valve 181 or the valve 183 can be installed in the delivery pipeline 130, and the installation positions of the valve 181 and the valve 183 are not limited to the adjacent one. An exhaust port and a second air inlet. In some specific examples, the types of the valve 181 and the valve 183 are ball valves, butterfly valves, gate valves, check valves, other suitable flow control valves or a combination of the above valves.

In addition, a temperature detector 171 and a temperature detector 173 are provided on the delivery pipeline 130, and the temperature detector 171 and the temperature detector 173 are respectively adjacent to the first exhaust port and the second air inlet, To monitor the temperature of the polluted gas. However, the present invention is not limited thereto. Although the figure shows two temperature detectors, only one of the temperature detector 171 and the temperature detector 173 can be provided in the delivery pipeline 130 . In some embodiments, the temperature detector 171 and the temperature detector 173 are thermocouple thermometers, resistance thermometers, other suitable thermometers, or a combination of the above-mentioned temperature detectors.

The pollution prevention room 120 includes a second furnace and a second burner. The second combustion furnace is configured to process the polluted gas transported into the pollution prevention chamber 120 , and the second burner provides thermal energy to heat and decompose the polluted gas to obtain heated gas. In some embodiments, the second burner may be the same as or different from the first burner. In some embodiments, during the process of heating and decomposing the polluted gas, the second temperature in the second combustion furnace may be 750° C. to 950° C., preferably 800° C. to 900° C., so as to sufficiently heat and decompose the polluted gas. In some embodiments, after being treated by the pollution control chamber 120, the obtained heated gas contains nitrogen oxides (such as NO ₂ ), carbon oxides (such as CO ₂ ), and/or other gases that are simpler or less polluting than Environmentally hazardous compounds.

After decomposing the polluted gas, the heating gas system in the pollution prevention chamber 120 can be sent back to the thermal desorption chamber through the second exhaust port of the pollution prevention chamber 120, the recovery pipeline 140, and the first air inlet of the thermal desorption chamber 110. In the attached room 110. Because the heating gas is recycled, and the temperature of the heating gas is higher than the ambient temperature (such as the temperature of the polluted gas) in the thermal desorption chamber 110, it helps to reduce the consumption of the first burner in the thermal desorption chamber 110. fuel. In one embodiment, the structure of the recovery pipeline 140 is similar to that of the delivery pipeline 130 , so it will not be repeated here.

The recovery pipeline 140 is provided with a valve 185 and a valve 187, and the valve 185 and the valve 187 are respectively adjacent to a second exhaust port and a first air intake port to control the flow and velocity of the heating gas. In addition, the recovery pipeline 140 is provided with a temperature detector 175 and a temperature detector 177, and the temperature detector 175 and the temperature detector 177 are respectively adjacent to the second exhaust port and the first air inlet, to monitor the temperature of the heating gas. Among them, the valve 185, valve 187, temperature detector 175, and temperature detector 177 on the recovery pipeline 140 are similar in type or quantity to the valve 181, valve 183 and temperature detector on the delivery pipeline 130. Detector 171 and temperature detector 173, so details will not be described here.

In some embodiments, the thermal desorption system 100 further includes an exhaust fan 150 and a chimney (not shown), wherein the exhaust fan 150 is connected to the pollution prevention room 120 through a discharge pipeline 160 , and the chimney is connected to the exhaust fan 150 . Accordingly, part of the heated gas in the pollution prevention chamber 120 can be vented to the outside to control the total gas pressure of the system 100 . In some embodiments, the structure of the discharge pipeline 160 is similar to that of the delivery pipeline 130 , so it will not be further described here. The discharge pipeline 160 is provided with a valve 189 , and the valve 189 is adjacent to the third exhaust port of the pollution prevention room 120 . In some specific examples, the type of the valve 189 may be the same as or different from the valve 181 and the valve 183 on the delivery pipeline 130 . In some embodiments, a part of the heated gas is returned to the thermal desorption chamber 110 through the recovery line 140 , and the remaining part of the heated gas is discharged to the exhaust fan 150 through the discharge line 160 .

The thermal desorption chamber 110 further includes a controller (not shown). The controller is electrically connected to each of the aforementioned valves and each of the aforementioned temperature detectors. When polluted gas and heating gas respectively flow through the corresponding temperature detector 171, temperature detector 173, temperature detector 175 and temperature detector 177, the measured temperature data will be regularly uploaded and stored to the controller Inside. For example, the temperature detector 171 can be used to determine whether the temperature of the thermal desorption chamber 110 meets the aforementioned first temperature. In addition, the temperature detector 177 can be used to determine whether the temperature of the heating gas can be used as an auxiliary heat source. In some embodiments, when the controller receives the temperature data from the temperature detector 171, and the temperature data is lower than the first temperature, the controller can open the valve 187 and the valve 185 to let in an appropriate amount of high-temperature heating gas , so that the temperature of the thermal desorption chamber 110 is increased to the first temperature, thereby facilitating gasification and separation of pollutant gases. In addition, the difference between the temperature of the polluted gas and the second temperature can be judged by the temperature detector 173, so as to judge whether the second burner is turned on, and provide enough heat energy to heat the second burner, wherein the second temperature can be determined by Temperature detector 175 to measure. In some embodiments, when the controller receives the temperature data from the temperature detector 175, and the temperature data is higher than the second temperature, the controller can partially or completely close the valve 187 and the valve 185, and partially or Fully open the valve 189 to facilitate the regulation and control of the temperature in the pollution prevention and control chamber 120 .

In some embodiments, the pollutants in the thermal desorption chamber 110 can be heated by the first burner and/or the heated gas in the pollution prevention chamber 120 , and the pollutant gases can be separated. Then, through the delivery pipeline 130 , the valve 181 and the valve 183 , the polluted gas can be delivered to the pollution prevention room 120 . With the second burner in the pollution control chamber 120, the polluted gas can be further combusted to generate heating gas. Then, through the recovery pipeline, valve 185 and valve 187, a part of the heated gas can be returned to the thermal desorption chamber 110, so as to reduce the fuel consumption of the first burner and prolong the service life of the first burner. In addition, the remaining part of the heating gas can be discharged to the outside through the discharge pipe 160, the valve 189, the exhaust fan 150 and the chimney. Since the heating gas has been broken down into simpler compounds, it is not harmful to the environment.

Although the present invention has been disclosed as above in terms of implementation, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this new model should be defined by the scope of the attached patent application.

100: system 110: thermal desorption chamber 120: Pollution Control Room 130: Delivery pipeline 140: Recovery pipeline 150: exhaust fan 160: discharge pipe 171, 173, 175, 177: Temperature detectors 181, 183, 185, 187, 189: valves

In order to have a more complete understanding of the embodiments of the present invention and its advantages, please refer to the following descriptions together with the corresponding drawings. It must be emphasized that the various features are not drawn to scale and are for illustration purposes only. The contents of related drawings are explained as follows. FIG. 1 is a schematic diagram illustrating an energy recovery thermal desorption device system according to some embodiments of the present invention.

100: system

110: thermal desorption chamber

120: Pollution Control Room

130: Delivery pipeline

140: Recovery pipeline

150: exhaust fan

160: discharge pipe

171, 173, 175, 177: Temperature detectors

181, 183, 185, 187, 189: valves

Claims (10)

An energy recovery type thermal desorption equipment system, comprising: a thermal desorption chamber including a first exhaust port and a first gas inlet, the thermal desorption chamber configured to separate a polluted gas from a polluted substance; a pollution control chamber, including a second air inlet and a second exhaust port, the pollution prevention chamber is configured to burn the polluted gas to obtain a heated gas; a delivery pipeline connecting the first exhaust port and the second air inlet, wherein the delivery pipeline is configured to deliver the polluted gas to the pollution control chamber; a recovery pipeline connecting the second exhaust port and the first gas inlet, wherein the recovery pipeline is configured to deliver a portion of the heated gas to the thermal desorption chamber; an exhaust fan; and A discharge pipeline is disposed between the pollution control room and the exhaust fan, wherein the discharge pipeline is configured to discharge a remaining portion of the heated gas. The energy recovery thermal desorption device system as claimed in claim 1, wherein a temperature of the polluted gas is lower than a temperature of the heated gas. The energy recovery type thermal desorption equipment system as described in claim 1, wherein the recovery pipeline includes: an inner liner; and An outer covering layer covers the inner lining layer. The energy recovery type thermal desorption equipment system as described in claim 3, wherein the lining layer is an insulating material. The energy recovery type thermal desorption equipment system as described in Claim 1, wherein the thermal desorption chamber and the pollution prevention chamber include a plurality of burners, wherein these burners are oil-fired burners and gas-fired burners Or electric burner. The energy recovery type thermal desorption equipment system as described in claim 1 further includes: A plurality of valves, wherein the valves are arranged on the delivery pipeline, the recovery pipeline and the discharge pipeline. The energy recovery thermal desorption equipment system as described in Claim 6, wherein the number of these valves is at least three. The energy recovery thermal desorption equipment system as described in Claim 6, wherein the energy recovery thermal desorption equipment system further comprises: A plurality of temperature detectors, wherein each of the temperature detectors is respectively adjacent to the first exhaust port, the first air inlet, the second exhaust port and the second air inlet. The energy recovery type thermal desorption equipment system as described in Claim 8 further includes: A controller is connected to the valves and the temperature detectors, and the controller is configured to control a plurality of opening degrees of the valves according to a plurality of temperatures measured by the temperature detectors. The energy recovery type thermal desorption equipment system as described in claim 1 further includes: A chimney is connected to the exhaust fan, wherein the chimney is configured to discharge a remaining portion of the heating gas to the outside.

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