Air supply device of autoclave of leaching container

Abstract

The utility model discloses a gas supply device of a leaching container autoclave, which comprises a plurality of groups of high-pressure gas cylinders which are matched for use, the plurality of groups of high-pressure gas cylinders are clamped and fixed on a gas cylinder bracket in parallel at intervals, gas outlet pipes of the high-pressure gas cylinders are respectively connected with gas buffer bent pipes through pipelines, gas outlet pipes of the gas buffer bent pipes are connected with a gas supply branch pipeline, and the gas supply branch pipeline is connected with a gas supply pipeline. Gas pressure reducers and branch control valves are sequentially arranged on the gas supply branch pipelines, the gas supply branch pipelines are connected to the gas supply main pipeline, a gas outlet pipe of the gas supply main pipeline is connected to the autoclave, and a main control valve, a gas flow regulating valve, an exhaust valve and a one-way valve are arranged on the gas supply main pipeline; and an autoclave air inlet control valve is arranged on the pipeline at the air inlet end of the autoclave. The device can be used for placing enough gas cylinders, the gas cylinders are stably placed, the gas cylinders are convenient to enter, exit and replace, the occupied area is small, the continuity of gas supply of the autoclave can be realized, and the pressurized oxygen leaching effect is good; the gas cylinder replacement operation time can be shortened, operation is easy, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrometallurgy, in particular to a gas supply device for a leaching container pressure kettle. Background Art

[0002] The pressure autoclave is a commonly used material pressurized leaching container in hydrometallurgy. Pressure autoclaves with specifications of 200L and below are often used in small-scale and expanded test research of scientific research projects. Pressure autoclaves are generally made of titanium.

[0003] Pressure oxidation leaching is a commonly used material leaching method in hydrometallurgy. Due to the convenient source of oxygen and low price, it is often used as the first choice of oxidant. Generally, the pressure oxygen leaching test is carried out at a temperature of 150-200℃, a reaction time of 4-6h, and a pressure of 0.8-2.1MPa (oxygen partial pressure of 0.3-0.6MPa).

[0004] At the beginning of the pressure test, the temperature rise stage, and at the end of the reaction, the temperature drop stage, the air and oxygen in the autoclave must be replaced with nitrogen to prevent the oxygen from reacting with the titanium material in the autoclave at a certain temperature and pressure, thus damaging the autoclave equipment. There are two types of gases introduced into the autoclave in the pressure oxidation leaching method: one is the oxygen involved in the oxygen leaching reaction, and the other is the nitrogen used to replace the air and oxygen in the autoclave. The gases required for the pressure oxidation leaching method are all provided by an external gas supply device.

[0005] There are two types of external gas supply devices, one is a dedicated oxygen supply station, and the other is a high-pressure gas cylinder.

[0006] There are the following problems in building a dedicated oxygen production and supply station for small-scale and expanded tests of scientific research projects using autoclaves (200L and below): first, the investment cost is high and the area occupied is large; second, the scale of small-scale and expanded tests is small, the test results are uncertain, and the investment risk is high; third, the oxygen production and supply station has many dangerous and hazardous factors, which puts higher requirements on safety management. Therefore, the gas required for small-scale and expanded tests is generally supplied by high-pressure gas cylinders.

[0007] Conventional high-pressure gas cylinders, oxygen cylinders have a specification of 40L, and the filling pressure of oxygen is 13.5-15.0MPa; nitrogen cylinders have a specification of 40L, and the filling pressure of nitrogen is 12.5MPa.

[0008] The traditional gas supply method consists of a high-pressure gas cylinder, a gas pressure reducer, and a gas supply pipeline. The gas supply pipeline has only one access port for the high-pressure gas cylinder. One end of the gas supply pipeline is connected to the output end of the gas pressure reducer, and the other end is connected to the air intake control valve of the autoclave. The input end of the gas pressure reducer is connected to the high-pressure gas cylinder. When supplying gas, open the bottle valve of the high-pressure gas cylinder, adjust the output pressure of the gas pressure reducer, open the air intake control valve of the autoclave, and realize the gas supply to the autoclave. The residual gas in the autoclave is discharged through the tail gas valve of the autoclave.

[0009] Since there is only one access port for the high-pressure gas cylinder in the gas supply pipeline, in order to ensure the gas supply of the autoclave, the high-pressure gas cylinder needs to be replaced several times during the test. The number of oxygen bottles required for the single autoclave test is N (N≤10), and the number of nitrogen bottles is 1-2. That is, the number of times the single autoclave test cylinder is replaced is N+1 or N+2 times, of which the number of cylinders replaced between nitrogen and nitrogen is 0-1 times, the number of cylinders replaced between oxygen and oxygen is N-1 times, and the number of cylinders replaced between nitrogen and oxygen is 2 times. The operation time for each cylinder replacement is 6-10 minutes. When replacing the cylinder, the air inlet valve of the autoclave equipment needs to be closed, and the oxygen delivery is interrupted.

[0010] The traditional gas supply method has the following problems:

[0011] 1. The gas cylinders are replaced frequently, the labor intensity of the operators is high, the operation time is long, and the test progress is affected;

[0012] 2. When replacing the gas cylinder, the air inlet valve of the autoclave needs to be closed, which causes the oxygen supply of the pressurized oxygen leaching test to be interrupted, and the continuity of the oxygen supply of the pressurized leaching reaction cannot be maintained, affecting the leaching effect of the pressurized leaching test;

[0013] 3. The oxygen introduced is not easy to adjust and measure;

[0014] 4. The gas pressure of a full high-pressure gas cylinder is 12.5MPa. After the cylinder valve is opened, the instantaneous impact force on the first-stage pressure gauge of the gas pressure reducer is large, and the first-stage pressure gauge is easily damaged;

[0015] 5. The commonly used oxygen gas pressure reducer has two pressure gauges, the first-level pressure gauge range is 0-25.0MPa, the second-level pressure gauge range is 0-2.5MPa, and its maximum working pressure is 1.6MPa, which cannot meet the test requirements of oxygen pressure leaching at temperatures of 180°C and above and pressures of 1.6MPa or above;

[0016] 6. When replacing gas cylinders, the remaining gas in the gas pipeline has a certain pressure, which poses a potential safety risk of harming operators;

[0017] 7. During the test, if the external high-pressure gas cylinder pressure is lower than the autoclave pressure in the autoclave, the acidic solution in the autoclave will enter the gas transmission pipeline and the high-pressure gas cylinder, causing corrosion of the gas reducer and the high-pressure gas cylinder, posing a major potential safety hazard. Utility Model Content

[0018] The purpose of the utility model is to overcome the defects and shortcomings of the prior art and to propose a pressure autoclave gas supply device which has the advantages of adjustable and metered gas supply flow, can realize the continuity of gas supply, reduce the operation time of gas cylinder replacement, reduce the labor intensity of operators, is simple to operate, and is safe and reliable.

[0019] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0020] A gas supply device for an autoclave of an leaching container comprises a plurality of groups of high-pressure gas cylinders for use in combination, wherein the plurality of groups of high-pressure gas cylinders are fixedly mounted on a gas cylinder bracket in parallel and at intervals, the gas outlet pipes of the high-pressure gas cylinders are respectively connected to gas buffer elbows through pipelines, the gas outlet pipes of the gas buffer elbows are connected to gas supply branch pipelines, and gas pressure reducers and branch control valves are sequentially arranged on the gas supply branch pipelines, the gas supply branch pipelines are all connected to a gas supply main pipeline, the gas outlet pipe of the gas supply main pipeline is connected to the autoclave, and a main control valve, a gas flow regulating valve, an exhaust valve, and a one-way valve are sequentially arranged on the gas supply main pipeline, and a pressure autoclave air inlet control valve is arranged on the pipeline at the air inlet end of the pressure autoclave.

[0021] The multiple groups of high-pressure gas cylinders include N groups of high-pressure oxygen cylinders and 1-2 groups of high-pressure nitrogen cylinders, where N≤10.

[0022] The gas cylinder bracket includes a bottom plate arranged up and down, and the front and rear sides of the bottom plate and the top plate are respectively distributed with vertically spaced vertical poles, and a card-mounting chamber is formed between the adjacent vertical poles. A U-shaped card-mounting groove is opened on the corresponding top plate directly above each card-mounting chamber, and the front end face of the card-mounting chamber is provided with a blocking component for facilitating the entry and exit of gas cylinders and preventing gas cylinders from tipping over.

[0023] Circular concave cavities for clamping the bottom of the gas cylinder are respectively arranged on the bottom plate in the clamping chamber.

[0024] The blocking assembly includes a chain and a hook which are arranged in a one-to-one correspondence and used in conjunction with each other. The chain and the hook are respectively arranged on the vertical rods on both sides of the front end surface of the card-mounting chamber.

[0025] The blocking components are divided into two groups, which are arranged in an upper and lower interval manner in front of the card installation chamber.

[0026] The bottom end of the vertical pole, the rear end surface of the middle section and both sides are respectively provided with reinforcing rib plates.

[0027] Each group of gas pressure reducers has two pressure gauges, the first-level pressure gauge has a range of 0-25.0 MPa, and the second-level pressure gauge has a range of 0-4.0 MPa.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] 1. By connecting multiple high-pressure gas inlets in parallel on the main gas supply pipeline, multiple groups of high-pressure gas cylinders can be connected at one time, which can meet the gas volume required for single-pot test of pressure kettles (200L and below) of different specifications and models. The working pressure is controlled by the gas reducer, and the rapid switching between gas cylinders is achieved through the sub-control valve to achieve the continuity of gas supply, which can reduce the time of gas cylinder replacement operation and reduce the labor intensity of operators. The operation is simple, safe and reliable;

[0030] 2. A gas flow regulating valve is installed on the main gas supply pipeline, which can adjust the flow of gas according to demand and measure the amount of gas introduced;

[0031] 3. A gas buffer elbow is provided between the high-pressure gas cylinder and the gas pressure reducer, which can reduce the impact force of the high-pressure gas cylinder on the first-stage pressure gauge of the gas pressure reducer when it is opened, thus protecting the pressure gauge;

[0032] 4. The pressure gauge level of the gas pressure reducer connected to the high-pressure gas cylinder is 2 levels, the range of the first-level pressure gauge is 0-25.0MPa, the range of the second-level pressure gauge is 0-4.0MPa, and its maximum working pressure is 2.5MPa. The temperature and pressure range of the autoclave test are widened to meet the test requirements of oxygen pressure leaching with a temperature of 150-200℃, a pressure of 0.8-2.2MPa and an oxygen partial pressure of 0.3-0.6MPa;

[0033] 5. An exhaust valve is installed on the main gas supply pipeline to release the remaining gas with a certain pressure in the main gas pipeline and the gas branch pipeline, avoiding the safety risk of harming the operators during the gas cylinder replacement operation;

[0034] 6. A one-way valve is installed on the main gas supply pipeline. Even if the pressure of the external high-pressure gas cylinder is lower than the pressure in the autoclave during the test, the acidic solution in the autoclave will not enter the gas pipeline and the high-pressure gas cylinder, causing the gas reducer and the high-pressure gas cylinder to be corroded, thus avoiding potential safety hazards.

[0035] The gas supply device of the utility model can hold a sufficient number of gas cylinders. The gas cylinders are placed stably, and the gas cylinders are convenient to enter, exit and replace. The gas supply device occupies a small area. The gas flow rate can be adjusted and measured, and the continuity of the gas supply to the pressure autoclave can be achieved. The pressurized oxygen leaching effect is good. The operation time of replacing the gas cylinders can be reduced, the labor intensity of the operators is reduced, the operation is simple, and it is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the composition of the utility model;

[0037] Figure 2 This is a schematic diagram of the structure of the distribution of 6 groups of high-pressure oxygen cylinders and 2 groups of high-pressure nitrogen cylinders in an embodiment of the utility model;

[0038] Figure 3 It is a schematic diagram of the structure of the gas cylinder bracket.

[0039] Reference numerals:

[0040] 1. High-pressure gas cylinder; 2. Gas buffer elbow; 3. Gas pressure reducing valve; 4. Sub-control valve; 5. Gas supply sub-pipeline; 6. Gas supply main pipeline; 7. Main control valve; 8. Gas flow regulating valve; 9. Exhaust valve; 10. Check valve; 11. Pressure autoclave air inlet control valve; 12. Pressure autoclave; 13. Gas cylinder bracket;

[0041] 131, bottom plate; 132, top plate; 133, vertical pole; 134, U-shaped card-mounting groove; 135, blocking assembly; 1351, chain; 1352, hook; 136, circular concave cavity; 137, reinforcing rib plate; 138, card-mounting chamber;

[0042] 101-102, high-pressure nitrogen cylinder; 103-108, high-pressure oxygen cylinder; 301-302, nitrogen pressure reducer; 303-308, oxygen pressure reducer; 401-408, sub-control valve. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] See attached Figure 1-2 A gas supply device for an leaching container autoclave, comprising a plurality of groups of high-pressure gas cylinders 1, a gas buffer elbow 2 connected to each group of high-pressure gas cylinders 1, a gas pressure reducer (matching the type of gas in the gas cylinder) 3 connected to the gas buffer elbow 2, a gas supply branch pipeline 5 connected to the gas pressure reducer 3, a branch control valve 4 arranged on the gas supply branch pipeline 5, a gas supply main pipeline 6 connected to the gas supply branch pipeline 5, a main control valve 7, a gas flow regulating valve 8, an exhaust valve 9, a one-way valve 10 arranged on the gas supply main pipeline 6, and a gas cylinder bracket 13 for storing the high-pressure gas cylinders 1.

[0045] One end of each set of gas buffer elbows 2 is connected to the high-pressure gas cylinder 1, and the other end is connected to the gas inlet end of the gas reducer 3, and the working end of the gas reducer 3 is connected to the gas supply branch pipeline 5; each set of gas supply branch pipelines 5 is provided with a sub-control valve 4; each set of gas supply branch pipelines 5 is connected in parallel to one end of the gas supply main pipeline 6, and the other end of the gas supply main pipeline 6 is connected to the gas inlet control valve 11 of the autoclave 12. The main control valve 7, gas flow regulating valve 8, exhaust valve 9, and one-way valve 10 are sequentially arranged on the gas supply main pipeline 6, and the high-pressure gas cylinder 1 is stored on the anti-dumping gas cylinder bracket 13.

[0046] When in use, prepare sufficient, full oxygen and nitrogen high-pressure gas cylinders 1 according to the size of the test autoclave 12 equipment, oxygen reaction time and gas flow rate. In this example, prepare 6 full high-pressure oxygen (oxygen cylinders with a size of 40L and an oxygen filling pressure of 13.5MPa) and 2 high-pressure nitrogen (nitrogen cylinders with a size of 40L and a nitrogen filling pressure of 12.5MPa), store them on the gas cylinder stand 13, connect all components, check the air tightness of the connections of all components, and ensure that there is no gas leakage at the connections of all components. Check that all valves are in the closed state, including the bottle valve of the high-pressure gas cylinder 1, the sub-control valve 4, the main control valve 7, the gas flow regulating valve 8, the exhaust valve 9 and the air intake control valve 11 of the autoclave 12, and the adjustment knob of the gas reducer 3 is in the loose state, and its working pressure is zero.

[0047] During the gas supply, the pressure test begins the temperature rise stage, and the remaining air and oxygen in the autoclave 12 need to be replaced with nitrogen. Open the bottle valve of the first group of high-pressure gas cylinders 101, tighten the adjustment knob of the first group of gas pressure reducer 301, so that its working pressure is slightly higher than the pressure of the autoclave 12 by 0.1MPa, open the first component control valve 401, open the main control valve 7, open the gas flow regulating valve 8, adjust its flow to meet the requirements, open the air intake control valve 11 of the autoclave 12, and the gas enters the autoclave 12 through the above-mentioned components and the gas supply pipeline in turn, and replaces the air and oxygen in the autoclave 12. The replacement gas and the remaining gas are discharged through the tail gas valve of the autoclave 12 (not shown in the figure). When the temperature in the autoclave 12 rises to 110°C and water vapor pressure is generated in the autoclave, close the first component control valve 401, close the bottle valve of the first group of high-pressure gas cylinders 101, and stop the nitrogen supply to the autoclave 12. Close the air inlet control valve 11 of the autoclave 12, open the exhaust valve 9, and release the gas with a certain pressure remaining in the gas supply branch pipeline 5 and the gas supply main pipeline 6. Then close the exhaust valve 9, loosen the adjustment knob of the first group of gas pressure reducers 301, and close the gas flow regulating valve 8.

[0048] When oxygen needs to be supplied to the autoclave 12 during the reaction phase of the pressurized test, the third group of high-pressure gas cylinders 103 first supplies oxygen to the autoclave 12. Open the bottle valve of the third group of high-pressure gas cylinders 103, tighten the adjustment knob of the third group of gas pressure reducer 303, so that its working pressure is slightly higher than the autoclave pressure of the autoclave 12 by 0.1MPa, open the third component control valve 403, open the gas flow regulating valve 8, adjust its flow to meet the requirements, open the air intake control valve 11 of the autoclave 12, and the gas enters the autoclave 12 through the above-mentioned components and the gas supply pipeline in turn. The oxygen contacts the reaction medium in the autoclave 12 to participate in the oxidation reaction. As the reaction continues, the gas that does not participate in the reaction rises and escapes in the reaction medium, and the remaining gas is discharged through the tail gas valve of the autoclave 12 (not shown in the figure). When the difference between the bottle pressure of the third group of high-pressure gas cylinders 103 and the autoclave pressure of the autoclave 12 is 1.0MPa, the first switching operation between oxygen gas cylinders is performed. At this time, the bottle valve of the fourth group of high-pressure gas cylinders 104 is opened, the regulating knob of the fourth group of gas pressure reducer 304 is tightened, so that its working pressure is slightly higher than the pressure of the autoclave 12 by 0.1 MPa, the fourth component control valve 404 is opened, the third component control valve 403 is closed, and the bottle valve of the third group of high-pressure gas cylinders 103 is closed, and the first switching operation between oxygen cylinders is completed, and the fourth group of high-pressure gas cylinders 104 supply oxygen to the autoclave 12. When the difference between the bottle pressure of the fourth group of high-pressure gas cylinders 104 and the autoclave pressure of the autoclave 12 is 1.0 MPa, the second switching operation between oxygen cylinders is performed. The method of the second oxygen cylinder switching operation is similar to the method of the first oxygen cylinder switching operation, and the methods of the subsequent oxygen cylinder switching operations are all similar to the method of the first oxygen cylinder switching operation. During this period, there is at most the N-1th oxygen cylinder switching operation, and the high-pressure gas cylinders 103-108 continue to supply oxygen to the autoclave 12. Until the oxygen supply time of the pressurized reaction is up, the air inlet control valve 11 of the pressure kettle 12 is closed, the sub-control valve 4 currently supplying gas is closed, the bottle valve of the corresponding high-pressure gas cylinder 1 is closed, and the pressure kettle 12 stops supplying oxygen.

[0049] At the end of the pressure test reaction, the cooling stage, when the temperature in the autoclave 12 drops to 110°C and the water vapor pressure in the autoclave decreases, the remaining oxygen in the autoclave 12 needs to be replaced with nitrogen. Open the bottle valve of the first group of high-pressure gas cylinders 101, tighten the first group of gas pressure reducers 301 to make its working pressure slightly higher than the autoclave pressure of the autoclave 12 by 0.1MPa, open the first group control valve 401, adjust the gas flow regulating valve 8 to make its flow meet the requirements, open the air intake control valve 11 of the autoclave 12, and the gas enters the autoclave 12 through the above-mentioned components and gas supply pipelines in turn, and the remaining gas is discharged through the tail gas valve of the autoclave 12 (not shown in the figure). When the difference between the bottle pressure of the first group of high-pressure gas cylinders 101 and the autoclave pressure of the autoclave 12 is 1.0MPa, the nitrogen gas cylinder switching operation is performed. At this time, open the bottle valve of the second group of high-pressure gas cylinders 102, tighten the second group of gas pressure reducers 302 to make its working pressure slightly higher than the pressure of the autoclave 12 by 0.1MPa, open the second component control valve 402, close the first component control valve 401, close the bottle valve of the first group of high-pressure gas cylinders 101, and complete the switching operation between nitrogen gas cylinders. After the pressure test is completed, close the air intake control valve 11 of the autoclave 12, close the sub-control valve 4 that is currently supplying gas, close the bottle valve of the corresponding high-pressure gas cylinder 1, and stop the gas supply of the autoclave 12. Close the bottle valves of all high-pressure gas cylinders 1, open all sub-control valves 4, open the exhaust valve 9, and release the gas with a certain pressure remaining in the gas supply sub-pipeline 5 and the gas supply main pipeline 6. Then close the exhaust valve 9, loosen the adjustment knobs of all gas pressure reducers 3, close the sub-control valve 5, the main control valve 7, and the gas flow regulating valve 8.

[0050] In this example, one way to realize gas supply to the autoclave is: high-pressure gas cylinders 101 - 102 supply nitrogen to the autoclave 12 , and high-pressure gas cylinders 103 - 108 continuously supply oxygen to the autoclave 12 . Open the valve of the high-pressure gas cylinder 1, and the gas flows out of the high-pressure gas cylinder 1 and enters the gas buffer elbow 2, and then enters the air inlet end of the gas reducer 3, and flows out from the working end of the gas reducer 3, enters the gas supply branch pipeline 5, the branch control valve 4, and the gas supply main pipeline 6, and then enters the main control valve 7, the gas flow regulating valve 8, the exhaust valve 9, and the one-way valve 10 in sequence, and then enters the air inlet control valve 11 of the pressure autoclave 12 and then enters the pressure autoclave 12. The nitrogen entering the pressure autoclave 12 replaces the air and oxygen in the pressure autoclave 12, and the replaced gas and the remaining gas are discharged through the tail gas valve of the pressure autoclave 12 (not shown in the figure); the oxygen entering the pressure autoclave 12 contacts the reaction medium in the pressure autoclave 12 to participate in the oxidation reaction. As the reaction continues, the gas that does not participate in the reaction rises and escapes in the reaction medium, and the remaining gas is discharged through the tail gas valve of the pressure autoclave 12 (not shown in the figure). The pressure of the gas introduced is adjusted by the adjustment knob of the gas reducer 3, and the flow rate and amount of the gas introduced can be adjusted and measured by the gas flow regulating valve 8; the switching operation between the high-pressure gas cylinders 1 (oxygen cylinders and oxygen cylinders, oxygen cylinders and nitrogen cylinders, nitrogen cylinders and nitrogen cylinders) is realized through the sub-control valve 4. The pressurized gas remaining in the gas supply pipeline is released through the exhaust valve 9; the instantaneous impact force of the high-pressure gas from the high-pressure gas cylinder 1 on the primary pressure gauge of the gas reducer 3 is reduced through the gas buffer elbow 2.

[0051] Further, in order to facilitate the clamping and fixing of the above 6 groups of high-pressure oxygen cylinders and 2 groups of high-pressure nitrogen cylinders, the present application also makes corresponding designs for the cylinder brackets (see attached Figure 3 ) The gas cylinder support 13 includes a bottom plate 131 and a top plate 132 arranged vertically, and vertical poles 133 are arranged at intervals on the front and rear sides of the bottom plate 131 and the top plate 132, respectively. A card-mounting chamber 138 is formed between adjacent vertical poles 133. A U-shaped card-mounting groove 134 is provided on the corresponding top plate directly above each card-mounting chamber 138, and a blocking assembly 135 is provided on the front face of the card-mounting chamber 138 to facilitate the entry and exit of the gas cylinder and prevent the gas cylinder from tipping over. The bottom plate 131 in the card-mounting chamber 138 is respectively provided with a circular concave cavity 136 for clamping the bottom of the gas cylinder. The blocking assembly 135 includes a chain 1351 and a hook 1352 that are arranged one by one and used in conjunction with each other. The chain 1351 and the hook 1352 are respectively arranged on the vertical poles 133 on both sides of the front face of the card-mounting chamber 138. The blocking assembly 135 is divided into two groups, which are arranged in an interval manner up and down in front of the card-mounting chamber 138. Reinforcing ribs 137 are respectively provided at the bottom end, the rear end surface of the middle section and both sides of the vertical rod 133 .

[0052] The combined structure of the card-mounting chamber 138, the circular concave cavity 136 on the bottom plate 131 and the U-shaped card-mounting groove 134 on the top plate 132 can meet the requirements of limiting the two sides of the gas cylinder card-mounting. The gas cylinder bracket is an independent unit. In order to meet the requirements of card-mounting and placement of different numbers of gas cylinders, a corresponding number of card-mounting chambers 138 can be set as needed, or a small number of card-mounting chambers 138 can be set as needed and used in parallel combination. During operation, firstly, the chain 1351 of the blocking assembly 135 is opened from the hook 1352 to ensure that the front of the card-mounted chamber 138 is open and the gas cylinder can enter smoothly. The gas cylinder is placed in the card-mounted chamber 138 so that the bottom of the gas cylinder is inserted into the circular concave cavity 136 and the top is located in the U-shaped card-mounted groove 134. Then the chain 1351 is hung on the hook 1352 to stably fix the gas cylinder in the card-mounted chamber 138. The gas cylinder bracket has a simple structure and is easy to operate. It can hold a sufficient number of gas cylinders, and the gas cylinders are placed firmly. It is also convenient for the gas cylinders to be put in and out and replaced, and it occupies a small area.

[0053] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0054] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A gas supply device for a leaching container autoclave, characterized in that: The invention comprises a plurality of groups of high-pressure gas cylinders (1) for use together. The plurality of groups of high-pressure gas cylinders (1) are fixedly mounted on a gas cylinder support (13) in parallel and at intervals. The gas outlet pipes of the high-pressure gas cylinders (1) are respectively connected to gas buffer elbows (2) through pipelines. The gas outlet pipes of the gas buffer elbows (2) are connected to gas supply branch pipelines (5). The gas supply branch pipelines (5) are provided with gas pressure reducers (3) and sub-control valves (4) in sequence. The gas supply branch pipelines (5) are all connected to a gas supply main pipeline (6). The gas outlet pipes of the gas supply main pipeline (6) are connected to a pressure autoclave (12). The gas supply main pipeline (6) is provided with a main control valve (7), a gas flow regulating valve (8), an exhaust valve (9), and a one-way valve (10) in sequence. The pipeline at the gas inlet end of the pressure autoclave (12) is provided with a pressure autoclave gas inlet control valve (11).

2. The gas supply device for the leaching container autoclave according to claim 1, characterized in that: The multiple groups of high-pressure gas cylinders include N groups of high-pressure oxygen cylinders and 1-2 groups of high-pressure nitrogen cylinders, where N≤10.

3. The gas supply device for the leaching container autoclave according to claim 1, characterized in that: The gas cylinder support (13) comprises a bottom plate (131) and a top plate (132) arranged in an upper and lower manner, and vertical poles (133) arranged at intervals are respectively distributed on the front and rear sides of the bottom plate (131) and the top plate (132), and a card-mounting chamber (138) is formed between adjacent vertical poles (133). A U-shaped card-mounting groove (134) is provided on the top plate (132) corresponding to each card-mounting chamber (138), and a blocking assembly (135) for preventing the gas cylinder from tipping over and facilitating the entry and exit of the gas cylinder is provided on the front end surface of the card-mounting chamber (138).

4. The gas supply device for the leaching container autoclave according to claim 3, characterized in that: Circular concave cavities (136) for clamping the bottom of the gas cylinder are respectively provided on the bottom plate (131) in the clamping chamber (138).

5. The gas supply device for the leaching container autoclave according to claim 3, characterized in that: The blocking assembly (135) comprises a chain (1351) and a hook (1352) which are arranged in a one-to-one correspondence and used in conjunction with each other. The chain (1351) and the hook (1352) are respectively arranged on the vertical rods (133) on both sides of the front end surface of the clamping chamber (138).

6. The gas supply device for the leaching container autoclave according to claim 5, characterized in that: The blocking components (135) are divided into two groups, which are arranged in an upper and lower interval manner in front of the card-mounting chamber (138).

7. The gas supply device for the leaching container autoclave according to claim 3, characterized in that: The bottom end portion of the vertical rod (133), the rear end surface of the middle section and both sides are respectively provided with reinforcing rib plates (137).

8. The gas supply device for the leaching container autoclave according to claim 1, characterized in that: The pressure gauge of each group of gas pressure reducers (3) has two levels, the range of the first-level pressure gauge is 0-25.0 MPa, and the range of the second-level pressure gauge is 0-4.0 MPa.

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