Waste heat recovery device for hot-pressing oxidation production

Abstract

The utility model discloses a waste heat recovery device for hot-pressing oxidation production, which comprises a reaction kettle and a heat recovery component, the heat recovery component receives hot air on the upper layer of the reaction kettle and transmits the hot air into the reaction kettle, the waste heat recovery device further comprises a flow guide component and a temperature sensor, and the flow guide component is fixedly mounted in the reaction kettle; hot air on the upper layer of the reaction kettle is conveyed into the reaction kettle through the heat recovery assembly, and the hot air on the upper layer of the reaction kettle can be conveyed to the lower part of the reaction kettle. The temperature sensor is fixedly arranged at the upper part of the reaction kettle, is electrically connected with the first electromagnetic valve, and is used as a switching value for controlling the opening and closing of the two output ends of the first electromagnetic valve. In order to conveniently control the first electromagnetic valve, a detection threshold value of a preset temperature sensor is used as a switching value, when the detection threshold value does not exceed the preset threshold value, the first electromagnetic valve does not work, otherwise, transmission path switching is carried out, and heat recovery operation of two modes is carried out.

Description

Technical Field

[0001] The utility model belongs to the technical field of refined gold mines, in particular to a waste heat recovery device used in hot pressure oxidation production. Background Art

[0002] The hot-pressed oxidation process for gold concentrate includes raw material preparation, slurry preparation, hot-pressed oxidation reaction, and gold extraction. The ore is crushed and finely ground to form a slurry, which is then hot-pressed to separate the gold from the sulfur, ultimately leading to gold extraction.

[0003] During the hot-pressing oxidation production process of refined gold ore, high-temperature waste gas and wastewater are generated. High-temperature waste gas and wastewater contain a large amount of heat energy, and direct discharge will cause energy waste.

[0004] However, there are some problems with the existing technology: traditional heat recovery devices often use air pumps and other equipment to transfer or retransmit hot air to the bottom of the container for thermal circulation operations. However, this method cannot accurately control the heat energy inside the container, which can easily cause internal temperature imbalance, resulting in excessively high or low temperatures. Therefore, we propose a waste heat recovery device for hot pressure oxidation production. Utility Model Content

[0005] In response to the problems existing in the existing technology, the utility model provides a waste heat recovery device for hot pressure oxidation production, which solves the problem that high-temperature exhaust gas and wastewater are generated during the hot pressure oxidation production of refined gold ore. The high-temperature exhaust gas and wastewater contain a large amount of heat energy, and direct discharge results in energy waste.

[0006] The utility model is implemented as follows: a waste heat recovery device for hot pressure oxidation production includes a reactor and a heat recovery component, the heat recovery component receives the hot air from the upper layer of the reactor and transmits it to the interior of the reactor, and also includes a guide component and a temperature sensor, and the guide component is fixedly installed inside the reactor; the hot air from the upper layer of the reactor is transmitted to the interior of the reactor through the heat recovery component, and the hot air from the upper layer of the reactor can be transmitted to the lower part of the reactor, avoiding the phenomenon of hot upper layer and cold lower layer, and the hot air is evenly distributed inside the reactor through the guide component.

[0007] The specific heat recovery component includes an air pump and a first solenoid valve. The air pump is fixedly installed on the upper part of the reactor, and the air pump input end is connected to the upper layer of the reactor. The first solenoid valve is fixedly installed at the air pump output end. The first solenoid valve is provided with two output ends. One of the output ends of the first solenoid valve is connected to the guide component, and the other output end of the first solenoid valve is used to connect to the outside world to transmit hot gas; the direction of the hot gas in the upper layer of the reactor is controlled by the first solenoid valve. The opening state of the two output ends is: when one of them is open, the other is closed. Only one output end is always working. The solenoid valve is used here to switch the transmission path, so that the hot gas can be optionally circulated internally or transmitted to the outside world for heat recycling.

[0008] A temperature sensor is further fixedly mounted on the upper portion of the reactor, with its detection end located within the reactor cavity. It is electrically connected to the first solenoid valve and serves as a switching variable to control the opening and closing of the first solenoid valve's two output terminals. To facilitate intelligent control of the first solenoid valve, a preset detection threshold for the temperature sensor is used as the switching variable. When the threshold is below the preset threshold, the first solenoid valve is deactivated. Otherwise, it is activated, switching the transmission path and performing two modes of heat recovery operation.

[0009] Preferably, the heat recovery assembly further comprises a support frame and a connecting pipe. The support frame is fixedly mounted on the upper portion of the reactor, and the output end of the air pump is fixedly connected to the input end of the first solenoid valve via the connecting pipe. The first solenoid valve is installed in a one-inlet, two-outlet configuration and is fixedly mounted on the upper portion of the reactor via the support frame. The output end of the air pump is fixedly connected to the input end of the first solenoid valve via the connecting pipe to complete the gas input.

[0010] Preferably, one of the output ends of the first solenoid valve is fixedly connected to the second air outlet pipe, and a second solenoid valve is fixedly installed on the side of the second air outlet pipe away from the first solenoid valve. By setting one of the output ends of the first solenoid valve fixedly connected to the second air outlet pipe as the first path, the path is controlled by adding the second solenoid valve to perform on-off operation.

[0011] Preferably, the other output end of the first solenoid valve is fixedly connected to a first air outlet pipe, which extends through the reactor cover and into the reactor cavity. By setting the other output end of the first solenoid valve to be fixedly connected to the first air outlet pipe as a second path, hot air from the upper layer of the reactor is normally transferred to the guide assembly through the second path.

[0012] Preferably, the air pump input end is fixedly connected to an air inlet pipe, and the end of the air inlet pipe away from the air pump passes through the reactor upper cover and extends to the reactor inner cavity. By connecting the air inlet pipe to the second path, the hot gas is guided and transmitted.

[0013] Preferably, the waste heat recovery device further includes a flow guide assembly, which includes a first outlet plate having an outlet slit and communicating with a first outlet pipe. The first outlet plate receives hot air from the inlet pipe and discharges it evenly to various levels within the reactor, thereby achieving a uniform temperature within the reactor.

[0014] Preferably, the flow guide assembly further comprises an air guide seat and a second air outlet plate, the second air outlet plate being fixedly mounted on the upper portion of the air guide seat and arranged at an angle, with the air holes communicating with the first air outlet pipe through the air guide seat. The air holes communicate with the first air outlet pipe through the air guide seat, and the flow guide assembly further comprises an air guide seat and a second air outlet plate, the second air outlet plate being fixedly mounted on the upper portion of the air guide seat so that the second air outlet plate can perform an air jet operation, and by arranging the second air outlet plate at an angle, a spiral airflow can be formed inside the reactor to accelerate gas mixing.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model uses the heat recovery component to transfer the hot air from the upper layer of the reactor to the inside of the reactor, which can transfer the hot air from the upper layer of the reactor to the lower part of the reactor, avoiding the phenomenon of hot upper part and cold lower part, and evenly distributes the hot air inside the reactor through the guide component;

[0017] 2. The utility model controls the direction of the upper hot gas of the reactor through the first solenoid valve. The opening state of the two output ends is: when one is open, the other is closed. Only one output end is always working. The solenoid valve is used to switch the transmission path, so that the hot gas can be optionally circulated internally or transmitted to the outside for heat recycling. In order to facilitate the control of the first solenoid valve, the detection threshold of the preset temperature sensor is used as the switching value. When the preset threshold is not exceeded, the first solenoid valve does not work, otherwise it works to switch the transmission path. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure provided by an embodiment of the present utility model;

[0019] Figure 2 The embodiment of the present utility model provides Figure 1 Schematic diagram of the structure at A in the middle;

[0020] Figure 3 It is a schematic diagram of the diversion component provided by an embodiment of the present utility model.

[0021] In the figure: 1. Reactor; 2. Heat recovery component; 3. Diversion component;

[0022] 201, support frame; 202, air pump; 203, connecting pipe; 204, air inlet pipe; 205, temperature sensor; 206, first air outlet pipe; 207, first solenoid valve; 208, second air outlet pipe; 209, second solenoid valve;

[0023] 301. First air outlet plate; 302. Air guide seat; 303. Second air outlet plate; 304. Air hole. DETAILED DESCRIPTION

[0024] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0025] The structure of the present utility model is described in detail below with reference to the accompanying drawings.

[0026] like Figures 1 to 3As shown, the waste heat recovery device for hot pressure oxidation production provided by the embodiment of the present invention includes a reactor 1, a heat recovery component 2, a guide component 3 and a temperature sensor 205. The heat recovery component 2 receives the hot gas from the upper layer of the reactor 1 and transmits it to the inside of the reactor 1. The guide component 3 is fixedly installed inside the reactor 1; the heat recovery component 2 includes an air pump 202 and a first solenoid valve 207. The air pump 202 is fixedly installed on the upper part of the reactor 1, and the input end of the air pump 202 is connected to the upper layer of the reactor 1. The first solenoid valve 207 is fixedly installed at the output end of the air pump 202. The first solenoid valve 207 is provided with two output ends, one of which is connected to the guide component 3, and the other output end of the first solenoid valve 207 is used to connect to the outside world to transmit hot gas; the temperature sensor 205 is fixedly installed on the upper part of the reactor 1, and the detection end is located in the inner cavity of the reactor 1 and is electrically connected to the first solenoid valve 207. It is used as a switch quantity to control the opening and closing of the two output ends of the first solenoid valve 207.

[0027] In this embodiment, the heat recovery assembly 2 further includes a support frame 201 and a connecting pipe 203 . The support frame 201 is fixedly mounted on the upper portion of the reactor 1 . The output end of the air pump 202 is fixedly connected to the input end of the first solenoid valve 207 via the connecting pipe 203 .

[0028] In this embodiment, one output end of the first solenoid valve 207 is fixedly connected to the second air outlet pipe 208 , and a second solenoid valve 209 is fixedly installed on a side of the second air outlet pipe 208 away from the first solenoid valve 207 .

[0029] In this embodiment, the other output end of the first solenoid valve 207 is fixedly connected to the first air outlet pipe 206 , and the first air outlet pipe 206 passes through the upper cover of the reactor 1 and extends to the inner cavity of the reactor 1 .

[0030] In this embodiment, an air inlet pipe 204 is fixedly connected to the input end of the air pump 202 , and an end of the air inlet pipe 204 away from the air pump 202 passes through the upper cover of the reactor 1 and extends to the inner cavity of the reactor 1 .

[0031] In this embodiment, the waste heat recovery device further includes a flow guide component 3 , which includes a first air outlet plate 301 . The first air outlet plate 301 is provided with an air outlet gap, and the air outlet plate is communicated with the first air outlet pipe 206 .

[0032] In this embodiment, the air guide assembly 3 further includes an air guide seat 302 and a second air outlet plate 303 . The second air outlet plate 303 is fixedly mounted on the upper portion of the air guide seat 302 and is tilted. The air hole 304 is connected to the first air outlet pipe 206 through the air guide seat 302 .

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for hot pressure oxidation production, comprising a reactor (1) and a heat recovery component (2), wherein the heat recovery component (2) receives hot gas from the upper layer of the reactor (1) and transmits it to the interior of the reactor (1), and is characterized by: It also includes a flow guide component (3) and a temperature sensor (205), wherein the flow guide component (3) is fixedly installed inside the reactor (1); The heat recovery component (2) includes an air pump (202) and a first solenoid valve (207). The air pump (202) is fixedly mounted on the upper portion of the reactor (1). The input end of the air pump (202) is connected to the upper layer of the reactor (1). The first solenoid valve (207) is fixedly mounted on the output end of the air pump (202). The first solenoid valve (207) is provided with two output ends. One of the output ends of the first solenoid valve (207) is connected to the flow guide component (3). The other output end of the first solenoid valve (207) is used to connect to the outside world to transmit hot gas. The temperature sensor (205) is fixedly mounted on the upper portion of the reactor (1), with the detection end located in the inner cavity of the reactor (1) and electrically connected to the first solenoid valve (207), serving as a switch quantity for controlling the opening and closing of the two output ends of the first solenoid valve (207).

2. The waste heat recovery device for hot pressure oxidation production according to claim 1, characterized in that: The heat recovery assembly (2) further comprises a support frame (201) and a connecting pipe (203); the support frame (201) is fixedly mounted on the upper portion of the reactor (1); and the output end of the air pump (202) is fixedly connected to the input end of the first solenoid valve (207) via the connecting pipe (203).

3. The waste heat recovery device for hot pressure oxidation production according to claim 1, characterized in that: One output end of the first solenoid valve (207) is fixedly connected to a second air outlet pipe (208), and a second solenoid valve (209) is fixedly installed on a side of the second air outlet pipe (208) away from the first solenoid valve (207).

4. The waste heat recovery device for hot pressure oxidation production according to claim 1, characterized in that: The other output end of the first solenoid valve (207) is fixedly connected to a first air outlet pipe (206), and the first air outlet pipe (206) passes through the upper cover of the reactor (1) and extends to the inner cavity of the reactor (1).

5. The waste heat recovery device for hot pressure oxidation production according to any one of claims 1 to 4, characterized in that: The input end of the air pump (202) is fixedly connected to an air inlet pipe (204), and one end of the air inlet pipe (204) away from the air pump (202) passes through the upper cover of the reactor (1) and extends to the inner cavity of the reactor (1).

6. The waste heat recovery device for hot pressure oxidation production according to claim 5, characterized in that: The waste heat recovery device further comprises a flow guide assembly (3), the flow guide assembly (3) comprising a first air outlet plate (301), the first air outlet plate (301) being provided with an air outlet gap, and the air outlet plate being in communication with the first air outlet pipe (206).

7. The waste heat recovery device for hot pressure oxidation production according to claim 6, characterized in that: The flow guide assembly (3) further comprises an air guide seat (302) and a second air outlet plate (303). The second air outlet plate (303) is fixedly mounted on the upper portion of the air guide seat (302) and is arranged at an angle. The second air outlet plate (303) is provided with an air hole (304). The air hole (304) is connected to the first air outlet pipe (206) through the air guide seat (302).

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