Efficient ammonia gas-liquid reaction device

Abstract

The utility model discloses an efficient ammonia gas gas-liquid reaction device which comprises three ammonia leaching kettles which are mutually connected through pipelines, the first ammonia leaching kettle is communicated with the second ammonia leaching kettle through a first gas outlet communicating pipe, the second ammonia leaching kettle is communicated with the third ammonia leaching kettle through a second gas outlet communicating pipe, and the third ammonia leaching kettle is communicated with the third ammonia leaching kettle through a second gas outlet communicating pipe. And the third ammonia leaching kettle is communicated with the first ammonia leaching kettle through a third gas outlet communicating pipe. The gas-liquid reaction device disclosed by the utility model can prevent ammonia gas from escaping in a gas-liquid reaction process of the ammonia gas, and improves the utilization rate of the ammonia gas.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas-liquid reaction devices and relates to a high-efficiency ammonia gas-liquid reaction device. Background Art

[0002] In chemical production, gas-liquid reaction is a common form of reaction. During the gas-liquid reaction process, gas will escape into the air. If the gas is toxic, flammable, explosive or environmentally unfriendly, it will have a great impact on the production and living environment.

[0003] The ammonia leaching process in the production of ammonium molybdate is a typical gas-liquid reaction process. Ammonia dissolves in water and reacts with industrial molybdenum oxide to form ammonium molybdate solution. Ammonia that does not have time to react will enter the air, causing air pollution and safety hazards. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency ammonia gas-liquid reaction device, which can prevent ammonia from escaping during the ammonia gas-liquid reaction process and improve the utilization rate of ammonia.

[0005] The technical solution adopted in this utility model is:

[0006] The high-efficiency ammonia gas-liquid reaction device includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle is connected to the No. 2 ammonia leaching kettle through the No. 1 gas outlet connecting pipe, the No. 2 ammonia leaching kettle is connected to the No. 3 ammonia leaching kettle through the No. 2 gas outlet connecting pipe, and the No. 3 ammonia leaching kettle is connected to the No. 1 ammonia leaching kettle through the No. 3 gas outlet connecting pipe.

[0007] The utility model is also characterized in that:

[0008] The three ammonia leaching kettles are connected to temporary storage tanks through pipelines.

[0009] There are two pipelines between the No. 1 ammonia leaching kettle and the temporary storage tank. The two pipelines are respectively provided with valves G and valve K. The two pipelines are respectively used to release the excess liquid in the No. 1 ammonia leaching kettle into the temporary storage tank and to pump the liquid stored in the temporary storage tank into the No. 1 ammonia leaching kettle.

[0010] There are two pipelines between the No. 2 ammonia leaching kettle and the temporary storage tank. The two pipelines are respectively provided with valves H and valve I. The two pipelines are respectively used to release the excess liquid in the No. 2 ammonia leaching kettle into the temporary storage tank and to pump the liquid stored in the temporary storage tank into the No. 2 ammonia leaching kettle.

[0011] There are two pipelines between the No. 3 ammonia leaching kettle and the temporary storage tank. The two pipelines are respectively provided with valve J and valve L. The two pipelines are respectively used to release the excess liquid in the No. 3 ammonia leaching kettle into the temporary storage tank and to pump the liquid stored in the temporary storage tank into the No. 3 ammonia leaching kettle.

[0012] The No. 1 ammonia leaching kettle is connected to the ammonia absorption kettle through a pipeline.

[0013] The No. 2 ammonia leaching kettle is connected to the ammonia absorption kettle through a pipeline.

[0014] The No. 3 ammonia leaching kettle is connected to the ammonia absorption kettle through a pipeline.

[0015] The beneficial effects of the utility model are:

[0016] The utility model utilizes the characteristic that ammonia is easily soluble in water (the solubility in water is 700:1) to connect multiple ammonia leaching kettles in series. Through multi-stage absorption of ammonia, the purpose of preventing ammonia from escaping during the reaction process is achieved. A temporary storage tank is added to recycle multiple ammonia leaching kettles. During the reaction process, the ammonia leaching kettle is first filled with water, and then the excess water is released into the temporary storage tank, which reduces the residual air in the ammonia leaching kettle and achieves the purpose of not introducing other gaseous impurities and improving the purity of ammonia. The entire reaction process is a closed reaction process with micro-pressure and high ammonia concentration, which is conducive to full reaction and improved reaction efficiency.

[0017] The utility model device solves the environmental protection and ammonia problems caused by gas escape during the ammonia gas-liquid reaction process. The device has a simple structure, ingenious design, and good use effect, and is also suitable for improving the same type of gas-liquid reaction system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the device of the utility model;

[0019] Figure 2 It is a schematic diagram of the connection mode of the three ammonia leaching kettles in the device of the utility model and the connection mode of the three ammonia leaching kettles and the ammonia absorption kettle.

[0020] In the figure, 1. Ammonia leaching kettle No. 1, 2. Ammonia leaching kettle No. 2, 3. Ammonia leaching kettle No. 3, 4. Gas outlet connecting pipe No. 1, 5. Gas outlet connecting pipe No. 2, 6. Gas outlet connecting pipe No. 3, 7. Temporary storage tank, 8. Ammonia absorption kettle. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] Example 1

[0023] The utility model is a high-efficiency ammonia gas-liquid reaction device, the structure of which is as follows Figure 1 and Figure 2 As shown, it includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0024] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines, wherein two pipelines are arranged between each ammonia leaching kettle and the temporary storage tank 7, namely, a pipeline for discharging excess liquid in the ammonia leaching kettle into the temporary storage tank 7 and a pipeline for pumping the liquid stored in the temporary storage tank 7 into the ammonia leaching kettle.

[0025] like Figure 1 As shown, valves G~L are respectively provided on the six pipelines, among which valve G and valve K are respectively provided on the two pipelines between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7, valve H and valve I are respectively provided on the two pipelines between the No. 2 ammonia leaching kettle 2 and the temporary storage tank 7, and valve J and valve L are respectively provided on the two pipelines between the No. 3 ammonia leaching kettle 3 and the temporary storage tank 7.

[0026] The three ammonia leaching kettles are all connected to the ammonia absorption kettle 8 through pipelines, which are used to transmit the unabsorbed trace ammonia in the three ammonia leaching kettles to the ammonia absorption kettle 8 for complete absorption. Valves A, B, and C are respectively provided on the three pipelines.

[0027] In this embodiment, the first ammonia leaching kettle 1 is used as the main reactor for ammonia leaching. The second and third ammonia leaching kettles are auxiliary reactors, in which no raw materials are added. Their main function is to absorb the excess ammonia in the first ammonia leaching kettle 1. Figure 1 As shown in the figure, all dotted line pipelines are ammonia transmission pipelines, and all solid line pipelines are liquid transmission pipelines. Before the reaction, all valves were closed.

[0028] Step 1: Open valve E on the No. 1 gas outlet connecting pipe 4, valve F on the No. 2 gas outlet connecting pipe 5, and valve C between the No. 3 ammonia leaching kettle 3 and the ammonia absorption kettle 8; add pure water to the No. 1 ammonia leaching kettle 1 to the top, and add pure water to the No. 2 ammonia leaching kettle 2 and the No. 3 ammonia leaching kettle 3 to exceed the top of the ammonia leaching kettle;

[0029] Step 2: Add the reaction materials to the No. 1 ammonia leaching kettle 1 and pass ammonia gas to react. After the ammonia is started, open the valve G and release the excess pure water in the No. 1 ammonia leaching kettle 1 into the temporary storage tank 7. When the liquid level is lower than the outlet pipe of the No. 1 ammonia leaching kettle 1, close the valve G. The liquid level at this time is the reaction liquid level in the No. 1 ammonia leaching kettle 1.

[0030] During the reaction, high-concentration ammonia gas escapes from Ammonia Soaking Vessel No. 2 through the No. 1 gas outlet connecting pipe 4. After a period of reaction, valve I is opened to release excess liquid into temporary storage tank 7. When the liquid level drops below the gas outlet pipe of Ammonia Soaking Vessel No. 2, valve I is closed. During the reaction, ammonia gas escaping from Ammonia Soaking Vessel No. 2 is absorbed by the pure water in Ammonia Soaking Vessel No. 3. Valve J is opened to release excess liquid into temporary storage tank 7. When the liquid level drops below the gas outlet pipe of Ammonia Soaking Vessel No. 3, valve J is closed. The remaining trace ammonia gas not absorbed by Ammonia Soaking Vessel No. 3 enters ammonia absorption vessel 8 through a pipeline for absorption. At this point, the three reactors are essentially in a reaction atmosphere with pure ammonia partial pressure, allowing for continuous ammonia flow and reaction.

[0031] In this step, the ammonia gas released from the No. 1 ammonia leaching kettle 1 is absorbed by the No. 2 ammonia leaching kettle 2 and the No. 3 ammonia leaching kettle 3, respectively, thus achieving multi-stage absorption of ammonia gas; the trace ammonia gas remaining in the No. 3 ammonia leaching kettle 3 is further absorbed by the ammonia absorption kettle 8, thus achieving complete absorption of ammonia gas;

[0032] Step 3: After the reaction in the No. 1 ammonia leaching kettle 1 is completed, the reacted liquid is pumped into the next stage process, valve H is opened, ammonia water in the temporary storage tank 7 is added to the No. 2 ammonia leaching kettle 2, and pure water is added to the No. 2 ammonia leaching kettle 2.

[0033] The second round of operation uses the No. 2 ammonia leaching kettle 2 to carry out the reaction. The No. 2 ammonia leaching kettle 2 is the main reactor for ammonia leaching operation. The No. 3 and No. 1 reactors are auxiliary reactors. No raw materials are added. Their main function is to absorb the excess ammonia gas in the No. 2 ammonia leaching kettle 2.

[0034] Ammonia gas is introduced into the second ammonia leaching kettle 2, and excess ammonia water is discharged into a temporary storage tank 7 until the liquid level reaches the reaction level, and then the reactants are added. High-concentration ammonia gas emitted during the reaction enters the third ammonia leaching kettle 3 through the second gas outlet connecting pipe 5. After being absorbed by the pure water in the third ammonia leaching kettle 3, the ammonia gas enters the first ammonia leaching kettle 1 through the third gas outlet connecting pipe 6. The remaining ammonia gas not absorbed by the first ammonia leaching kettle 1 is passed through a pipeline to the ammonia absorption kettle 8 for complete absorption.

[0035] After the reaction is completed, the liquid in the second ammonia leaching kettle 2 that has reacted completely is pumped into the next process, the ammonia water in the temporary storage tank 7 is added to the third ammonia leaching kettle 3, and the third ammonia leaching kettle 3 is filled with pure water.

[0036] The third round of operation uses the No. 3 ammonia leaching kettle 3 to carry out the reaction. The No. 3 ammonia leaching kettle 3 is used as the main reactor for ammonia leaching operation. The No. 1 and No. 2 reactors are auxiliary reactors. No raw materials are added. Their main function is to absorb the excess ammonia in the No. 3 ammonia leaching kettle 3.

[0037] Ammonia gas is introduced into Ammonia Leaching Tank No. 3, and excess ammonia water is released into a temporary storage tank 7 until the liquid level reaches the reaction level, where the reactants are added. High-concentration ammonia gas released during the reaction enters Ammonia Leaching Tank No. 1 through Gas Outlet Connecting Pipe No. 3 (Gas Outlet Connecting Pipe 6). After being absorbed by the pure water in Ammonia Leaching Tank No. 1, the ammonia gas enters Ammonia Leaching Tank No. 2 (Gas Outlet Connecting Pipe 5). Any remaining ammonia gas not absorbed by Ammonia Leaching Tank No. 2 enters Ammonia Absorption Tank 8 through a pipeline for complete absorption.

[0038] After the reaction is completed, the liquid in the No. 3 ammonia leaching kettle 3 that has reacted completely is pumped into the next process, the ammonia water in the temporary storage tank 7 is added to the No. 1 ammonia leaching kettle 1, and the No. 1 ammonia leaching kettle 1 is filled with pure water.

[0039] Then it enters the second large cycle, and uses the No. 1, 2 and 3 ammonia leaching kettles as the main reactors for operation.

[0040] Example 2

[0041] The utility model is a high-efficiency ammonia gas-liquid reaction device, the structure of which is as follows Figure 1 and Figure 2 As shown, it includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0042] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines, wherein two pipelines are arranged between each ammonia leaching kettle and the temporary storage tank 7, namely, a pipeline for discharging excess liquid in the ammonia leaching kettle into the temporary storage tank 7 and a pipeline for pumping the liquid stored in the temporary storage tank 7 into the ammonia leaching kettle.

[0043] Valves G~L are respectively provided on the six pipelines. Among them, valve G and valve K are respectively provided on the two pipelines between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7, valve H and valve I are respectively provided on the two pipelines between the No. 2 ammonia leaching kettle 2 and the temporary storage tank 7, and valve J and valve L are respectively provided on the two pipelines between the No. 3 ammonia leaching kettle 3 and the temporary storage tank 7.

[0044] The three ammonia leaching kettles are all connected to the ammonia absorption kettle 8 through pipelines, which are used to transmit the unabsorbed ammonia in the three ammonia leaching kettles to the ammonia absorption kettle 8 for complete absorption. Valves A, B, and C are respectively provided on the three pipelines.

[0045] In this embodiment, the No. 2 ammonia leaching kettle 2 is used as the main reactor for ammonia leaching. The No. 1 and No. 3 ammonia leaching kettles are used as auxiliary reactors. No raw materials are added. Their main function is to absorb excess ammonia in the No. 2 ammonia leaching kettle 2. All valves are closed before the reaction.

[0046] Step 1: Open valve F on the No. 2 gas outlet connecting pipe 5, valve D on the No. 3 gas outlet connecting pipe 6, and valve A between the No. 1 ammonia leaching kettle 1 and the ammonia absorption kettle 8; add pure water to the No. 2 ammonia leaching kettle 2 to the top, and add pure water to the No. 1 ammonia leaching kettle 1 and the No. 3 ammonia leaching kettle 3 until it exceeds the top of the ammonia leaching kettle;

[0047] Step 2: Add the reaction materials to the No. 2 ammonia leaching kettle 2, pass ammonia gas to react, and after the ammonia starts to pass, open valve 1 and release the excess pure water in the No. 2 ammonia leaching kettle 2 into the temporary storage tank 7. When the liquid level is lower than the outlet pipe of the No. 2 ammonia leaching kettle 2, close valve 1. The liquid level at this time is the reaction liquid level in the No. 2 ammonia leaching kettle 2.

[0048] During the reaction, high-concentration ammonia gas escapes from Ammonia Leaching Kettle No. 3 through the No. 2 gas outlet connecting pipe 5. After a period of reaction, valve J is opened to release excess liquid into temporary storage tank 7. When the liquid level drops below the gas outlet pipe of Ammonia Leaching Kettle No. 3, valve J is closed. During the reaction, ammonia gas escaping from Ammonia Leaching Kettle No. 3 is absorbed by the pure water in Ammonia Leaching Kettle No. 1. Valve G is opened to release excess liquid into temporary storage tank 7. When the liquid level drops below the gas outlet pipe of Ammonia Leaching Kettle No. 1, valve G is closed. The remaining trace ammonia gas not absorbed by Ammonia Leaching Kettle No. 1 enters the ammonia absorption kettle 8 through a pipeline for absorption. At this point, the three reactors are essentially in a reaction atmosphere with pure ammonia partial pressure, allowing for continuous ammonia flow and reaction.

[0049] In this step, the ammonia gas released from the second ammonia leaching kettle 2 is absorbed by the third ammonia leaching kettle 3 and the first ammonia leaching kettle 1, respectively, thus achieving multi-stage absorption of ammonia gas; the trace ammonia gas remaining in the first ammonia leaching kettle 1 is further absorbed by the ammonia absorption kettle 8, thus achieving complete absorption of ammonia gas;

[0050] Step 3: After the reaction in the No. 2 ammonia leaching kettle 2 is completed, the reacted liquid is pumped into the next stage, valve L is opened, ammonia water in the temporary storage tank 7 is added to the No. 3 ammonia leaching kettle 3, and pure water is added to the No. 3 ammonia leaching kettle 3.

[0051] The second round of operation uses the No. 3 ammonia leaching kettle 3 to carry out the reaction. The No. 3 ammonia leaching kettle 3 is used as the main reactor for ammonia leaching operation. The No. 1 and No. 2 reactors are auxiliary reactors. No raw materials are added. Their main function is to absorb the excess ammonia in the No. 3 ammonia leaching kettle 3.

[0052] Ammonia gas is introduced into Ammonia Leaching Tank No. 3, and excess ammonia water is released into a temporary storage tank 7 until the liquid level reaches the reaction level, where the reactants are added. High-concentration ammonia gas released during the reaction enters Ammonia Leaching Tank No. 1 through Gas Outlet Connecting Pipe No. 3 (Gas Outlet Connecting Pipe 6). After being absorbed by the pure water in Ammonia Leaching Tank No. 1, the ammonia gas enters Ammonia Leaching Tank No. 2 (Gas Outlet Connecting Pipe 5). Any remaining ammonia gas not absorbed by Ammonia Leaching Tank No. 2 enters Ammonia Absorption Tank 8 through a pipeline for complete absorption.

[0053] After the reaction is completed, the liquid in the No. 3 ammonia leaching kettle 3 that has reacted completely is pumped into the next process, the ammonia water in the temporary storage tank 7 is added to the No. 1 ammonia leaching kettle 1, and the No. 1 ammonia leaching kettle 1 is filled with pure water.

[0054] The third round of operation uses the No. 1 ammonia leaching kettle 1 to react, with the No. 1 ammonia leaching kettle 1 as the main reactor for ammonia leaching operation, and the No. 2 and No. 3 reactors as auxiliary reactors. No raw materials are added, and their main function is to absorb the excess ammonia gas in the No. 1 ammonia leaching kettle 1.

[0055] Ammonia gas is introduced into the first ammonia leaching kettle (1), and excess ammonia water is discharged into a temporary storage tank (7) until the liquid level reaches the reaction level, and then the reactants are added. High-concentration ammonia gas emitted during the reaction enters the second ammonia leaching kettle (2) through the first gas outlet connecting pipe (4). After being absorbed by the pure water in the second ammonia leaching kettle (2), the ammonia gas enters the third ammonia leaching kettle (3) through the second gas outlet connecting pipe (5). The remaining ammonia gas not absorbed by the third ammonia leaching kettle (3) is passed through a pipeline to the ammonia absorption kettle (8) for complete absorption.

[0056] After the reaction is completed, the liquid in the No. 1 ammonia leaching kettle 1 that has reacted completely is pumped into the next process, the ammonia water in the temporary storage tank 7 is added to the No. 2 ammonia leaching kettle 2, and the No. 2 ammonia leaching kettle 2 is filled with pure water.

[0057] Then it enters the second large cycle, and uses the second, third and first ammonia leaching kettles as the main reactors for operation.

[0058] Example 3

[0059] The utility model is a high-efficiency ammonia gas-liquid reaction device, the structure of which is as follows Figure 1 and Figure 2 As shown, it includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0060] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines, wherein two pipelines are arranged between each ammonia leaching kettle and the temporary storage tank 7, namely, a pipeline for discharging excess liquid in the ammonia leaching kettle into the temporary storage tank 7 and a pipeline for pumping the liquid stored in the temporary storage tank 7 into the ammonia leaching kettle.

[0061] Valves G~L are respectively provided on the six pipelines. Among them, valve G and valve K are respectively provided on the two pipelines between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7, valve H and valve I are respectively provided on the two pipelines between the No. 2 ammonia leaching kettle 2 and the temporary storage tank 7, and valve J and valve L are respectively provided on the two pipelines between the No. 3 ammonia leaching kettle 3 and the temporary storage tank 7.

[0062] The three ammonia leaching kettles are all connected to the ammonia absorption kettle 8 through pipelines, which are used to transmit the unabsorbed ammonia in the three ammonia leaching kettles to the ammonia absorption kettle 8 for complete absorption. Valves A, B, and C are respectively provided on the three pipelines.

[0063] In this embodiment, the No. 3 ammonia leaching kettle 3 is used as the main reactor for ammonia leaching. The No. 1 and No. 2 ammonia leaching kettles are auxiliary reactors. No raw materials are added. Their main function is to absorb excess ammonia in the No. 3 ammonia leaching kettle 3. All valves are closed before the reaction.

[0064] Step 1: Open valve D on the No. 3 gas outlet connecting pipe 6, valve E on the No. 1 gas outlet connecting pipe 4, and valve B between the No. 2 ammonia leaching kettle 2 and the ammonia absorption kettle 8; add pure water to the No. 3 ammonia leaching kettle 3 to the top, and add pure water to the No. 1 ammonia leaching kettle 1 and the No. 2 ammonia leaching kettle 2 to exceed the top of the ammonia leaching kettle;

[0065] Step 2: Add the reaction materials to the No. 3 ammonia leaching kettle 3 and pass ammonia gas to react. After the ammonia is started, open the valve J and release the excess pure water in the No. 3 ammonia leaching kettle 3 into the temporary storage tank 7. When the liquid level is lower than the outlet pipe of the No. 3 ammonia leaching kettle 3, close the valve J. The liquid level at this time is the reaction liquid level in the No. 3 ammonia leaching kettle 3.

[0066] During the reaction, high-concentration ammonia gas escapes from Ammonia Leaching Kettle 1 through No. 3 outlet connecting pipe 6 and enters Ammonia Leaching Kettle 1. After a period of reaction, valve G is opened to release excess liquid into temporary storage tank 7. When the liquid level drops below the outlet pipe of Ammonia Leaching Kettle 1, valve G is closed. During the reaction, ammonia gas escaping from Ammonia Leaching Kettle 1 is absorbed by pure water in Ammonia Leaching Kettle 2. Valve I is then opened to release excess liquid into temporary storage tank 7. When the liquid level drops below the outlet pipe of Ammonia Leaching Kettle 2, valve I is closed. The remaining trace ammonia gas not absorbed by Ammonia Leaching Kettle 2 enters ammonia absorption kettle 8 through a pipeline for absorption. At this point, the three reactors are essentially in a reaction atmosphere with pure ammonia partial pressure, allowing for continuous ammonia flow and reaction.

[0067] In this step, the ammonia gas released from the No. 3 ammonia leaching kettle 3 is absorbed by the No. 1 ammonia leaching kettle 1 and the No. 2 ammonia leaching kettle 2, respectively, thus achieving multi-stage absorption of ammonia gas; the trace ammonia gas remaining in the No. 2 ammonia leaching kettle 2 is further absorbed by the ammonia absorption kettle 8, thus achieving complete absorption of ammonia gas;

[0068] Step 3: After the reaction in the No. 3 ammonia leaching kettle 3 is completed, the reacted liquid is pumped into the next stage process, valve K is opened, the ammonia water in the temporary storage tank 7 is added to the No. 1 ammonia leaching kettle 1, and the No. 1 ammonia leaching kettle 1 is filled with pure water.

[0069] The second round of operation uses the No. 1 ammonia leaching kettle 1 to react, with the No. 1 ammonia leaching kettle 1 as the main reactor for ammonia leaching operation. The No. 2 and No. 3 reactors are auxiliary reactors. No raw materials are added. Their main function is to absorb the excess ammonia gas in the No. 1 ammonia leaching kettle 1.

[0070] Ammonia gas is introduced into the first ammonia leaching kettle (1), and excess ammonia water is discharged into a temporary storage tank (7) until the liquid level reaches the reaction level, and then the reactants are added. High-concentration ammonia gas emitted during the reaction enters the second ammonia leaching kettle (2) through the first gas outlet connecting pipe (4). After being absorbed by the pure water in the second ammonia leaching kettle (2), the ammonia gas enters the third ammonia leaching kettle (3) through the second gas outlet connecting pipe (5). The remaining ammonia gas not absorbed by the third ammonia leaching kettle (3) is passed through a pipeline to the ammonia absorption kettle (8) for complete absorption.

[0071] After the reaction is completed, the liquid in the No. 1 ammonia leaching kettle 1 that has reacted completely is pumped into the next process, the ammonia water in the temporary storage tank 7 is added to the No. 2 ammonia leaching kettle 2, and the No. 2 ammonia leaching kettle 2 is filled with pure water.

[0072] The third round of operation uses the No. 2 ammonia leaching kettle 2 to carry out the reaction. The No. 2 ammonia leaching kettle 2 is the main reactor for ammonia leaching operation. The No. 3 and No. 1 reactors are auxiliary reactors. No raw materials are added. Their main function is to absorb the excess ammonia gas in the No. 2 ammonia leaching kettle 2.

[0073] Ammonia gas is introduced into the second ammonia leaching kettle 2, and excess ammonia water is discharged into a temporary storage tank 7 until the liquid level reaches the reaction level, and then the reactants are added. High-concentration ammonia gas emitted during the reaction enters the third ammonia leaching kettle 3 through the second gas outlet connecting pipe 5. After being absorbed by the pure water in the third ammonia leaching kettle 3, the ammonia gas enters the first ammonia leaching kettle 1 through the third gas outlet connecting pipe 6. The remaining ammonia gas not absorbed by the first ammonia leaching kettle 1 is passed through a pipeline to the ammonia absorption kettle 8 for complete absorption.

[0074] After the reaction is completed, the liquid in the second ammonia leaching kettle 2 that has reacted completely is pumped into the next process, the ammonia water in the temporary storage tank 7 is added to the third ammonia leaching kettle 3, and the third ammonia leaching kettle 3 is filled with pure water.

[0075] Then it enters the second large cycle, and uses the No. 3, No. 2 and No. 1 ammonia leaching kettles as the main reactors for operation.

[0076] Example 4

[0077] The high-efficiency ammonia gas-liquid reaction device of this embodiment includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0078] Example 5

[0079] The high-efficiency ammonia gas-liquid reaction device of this embodiment includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0080] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines.

[0081] Example 6

[0082] The high-efficiency ammonia gas-liquid reaction device of this embodiment includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0083] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines.

[0084] Two pipelines are provided between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7. The two pipelines are respectively provided with valves G and valve K. The two pipelines are respectively used to release the excess liquid in the No. 1 ammonia leaching kettle 1 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 1 ammonia leaching kettle 1.

[0085] Example 7

[0086] The high-efficiency ammonia gas-liquid reaction device of this embodiment includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0087] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines.

[0088] Two pipelines are provided between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7. The two pipelines are respectively provided with valves G and valve K. The two pipelines are respectively used to release the excess liquid in the No. 1 ammonia leaching kettle 1 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 1 ammonia leaching kettle 1.

[0089] Two pipelines are provided between the No. 2 ammonia leaching kettle 2 and the temporary storage tank 7. A valve H and a valve I are provided on the two pipelines respectively. The two pipelines are used to discharge the excess liquid in the No. 2 ammonia leaching kettle 2 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 2 ammonia leaching kettle 2 respectively.

[0090] Example 8

[0091] The high-efficiency ammonia gas-liquid reaction device of this embodiment includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0092] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines.

[0093] Two pipelines are provided between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7. The two pipelines are respectively provided with valves G and valve K. The two pipelines are respectively used to release the excess liquid in the No. 1 ammonia leaching kettle 1 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 1 ammonia leaching kettle 1.

[0094] Two pipelines are provided between the No. 2 ammonia leaching kettle 2 and the temporary storage tank 7. A valve H and a valve I are provided on the two pipelines respectively. The two pipelines are used to discharge the excess liquid in the No. 2 ammonia leaching kettle 2 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 2 ammonia leaching kettle 2 respectively.

[0095] Two pipelines are provided between the No. 3 ammonia leaching kettle 3 and the temporary storage tank 7. A valve J and a valve L are provided on the two pipelines respectively. The two pipelines are used to release the excess liquid in the No. 3 ammonia leaching kettle 3 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 3 ammonia leaching kettle 3 respectively.

[0096] Example 9

[0097] The high-efficiency ammonia gas-liquid reaction device of this embodiment includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0098] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines.

[0099] Two pipelines are provided between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7. The two pipelines are respectively provided with valves G and valve K. The two pipelines are respectively used to release the excess liquid in the No. 1 ammonia leaching kettle 1 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 1 ammonia leaching kettle 1.

[0100] Two pipelines are provided between the No. 2 ammonia leaching kettle 2 and the temporary storage tank 7. A valve H and a valve I are provided on the two pipelines respectively. The two pipelines are used to discharge the excess liquid in the No. 2 ammonia leaching kettle 2 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 2 ammonia leaching kettle 2 respectively.

[0101] Two pipelines are provided between the No. 3 ammonia leaching kettle 3 and the temporary storage tank 7. A valve J and a valve L are provided on the two pipelines respectively. The two pipelines are used to release the excess liquid in the No. 3 ammonia leaching kettle 3 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 3 ammonia leaching kettle 3 respectively.

[0102] The first ammonia leaching kettle 1 is connected to the ammonia absorption kettle 8 through a pipeline.

[0103] Example 10

[0104] The high-efficiency ammonia gas-liquid reaction device of this embodiment includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0105] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines.

[0106] Two pipelines are provided between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7. The two pipelines are respectively provided with valves G and valve K. The two pipelines are respectively used to release the excess liquid in the No. 1 ammonia leaching kettle 1 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 1 ammonia leaching kettle 1.

[0107] Two pipelines are provided between the No. 2 ammonia leaching kettle 2 and the temporary storage tank 7. A valve H and a valve I are provided on the two pipelines respectively. The two pipelines are used to discharge the excess liquid in the No. 2 ammonia leaching kettle 2 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 2 ammonia leaching kettle 2 respectively.

[0108] Two pipelines are provided between the No. 3 ammonia leaching kettle 3 and the temporary storage tank 7. A valve J and a valve L are provided on the two pipelines respectively. The two pipelines are used to release the excess liquid in the No. 3 ammonia leaching kettle 3 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 3 ammonia leaching kettle 3 respectively.

[0109] The first ammonia leaching kettle 1 is connected to the ammonia absorption kettle 8 through a pipeline.

[0110] The second ammonia leaching kettle 2 is connected to the ammonia absorption kettle 8 through a pipeline.

[0111] Example 11

[0112] The high-efficiency ammonia gas-liquid reaction device of this embodiment includes three ammonia leaching kettles interconnected by pipelines, wherein the No. 1 ammonia leaching kettle 1 is connected to the No. 2 ammonia leaching kettle 2 through the No. 1 gas outlet connecting pipe 4, the No. 2 ammonia leaching kettle 2 is connected to the No. 3 ammonia leaching kettle 3 through the No. 2 gas outlet connecting pipe 5, and the No. 3 ammonia leaching kettle 3 is connected to the No. 1 ammonia leaching kettle 1 through the No. 3 gas outlet connecting pipe 6.

[0113] The three ammonia leaching kettles are all connected to the temporary storage tank 7 through pipelines.

[0114] Two pipelines are provided between the No. 1 ammonia leaching kettle 1 and the temporary storage tank 7. The two pipelines are respectively provided with valves G and valve K. The two pipelines are respectively used to release the excess liquid in the No. 1 ammonia leaching kettle 1 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 1 ammonia leaching kettle 1.

[0115] Two pipelines are provided between the No. 2 ammonia leaching kettle 2 and the temporary storage tank 7. A valve H and a valve I are provided on the two pipelines respectively. The two pipelines are used to discharge the excess liquid in the No. 2 ammonia leaching kettle 2 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 2 ammonia leaching kettle 2 respectively.

[0116] Two pipelines are provided between the No. 3 ammonia leaching kettle 3 and the temporary storage tank 7. A valve J and a valve L are provided on the two pipelines respectively. The two pipelines are used to release the excess liquid in the No. 3 ammonia leaching kettle 3 into the temporary storage tank 7 and to pump the liquid stored in the temporary storage tank 7 into the No. 3 ammonia leaching kettle 3 respectively.

[0117] The first ammonia leaching kettle 1 is connected to the ammonia absorption kettle 8 through a pipeline.

[0118] The second ammonia leaching kettle 2 is connected to the ammonia absorption kettle 8 through a pipeline.

[0119] The third ammonia leaching kettle 3 is connected to the ammonia absorption kettle 8 through a pipeline.

Claims

1. High-efficiency ammonia gas-liquid reaction device, characterized in that: The invention comprises three ammonia leaching kettles interconnected by pipelines, wherein the first ammonia leaching kettle (1) is connected to the second ammonia leaching kettle (2) through the first gas outlet connecting pipe (4), the second ammonia leaching kettle (2) is connected to the third ammonia leaching kettle (3) through the second gas outlet connecting pipe (5), and the third ammonia leaching kettle (3) is connected to the first ammonia leaching kettle (1) through the third gas outlet connecting pipe (6).

2. The high-efficiency ammonia gas-liquid reaction device according to claim 1, characterized in that: The three ammonia leaching kettles are all connected to the temporary storage tank (7) through pipelines.

3. The high-efficiency ammonia gas-liquid reaction device according to claim 2, characterized in that: Two pipelines are provided between the No. 1 ammonia leaching kettle (1) and the temporary storage tank (7), and a valve G and a valve K are provided on the two pipelines respectively. The two pipelines are used to discharge excess liquid in the No. 1 ammonia leaching kettle (1) into the temporary storage tank (7) and to pump the liquid stored in the temporary storage tank (7) into the No. 1 ammonia leaching kettle (1).

4. The high-efficiency ammonia gas-liquid reaction device according to claim 2, characterized in that: Two pipelines are provided between the No. 2 ammonia leaching kettle (2) and the temporary storage tank (7), and a valve H and a valve I are provided on the two pipelines respectively. The two pipelines are used to discharge excess liquid in the No. 2 ammonia leaching kettle (2) into the temporary storage tank (7) and to pump the liquid stored in the temporary storage tank (7) into the No. 2 ammonia leaching kettle (2).

5. The high-efficiency ammonia gas-liquid reaction device according to claim 2, characterized in that: Two pipelines are provided between the No. 3 ammonia leaching kettle (3) and the temporary storage tank (7), and a valve J and a valve L are provided on the two pipelines, respectively. The two pipelines are used to discharge excess liquid in the No. 3 ammonia leaching kettle (3) into the temporary storage tank (7) and to pump the liquid stored in the temporary storage tank (7) into the No. 3 ammonia leaching kettle (3).

6. The high-efficiency ammonia gas-liquid reaction device according to claim 1, characterized in that: The first ammonia leaching kettle (1) is connected to the ammonia absorption kettle (8) via a pipeline.

7. The high-efficiency ammonia gas-liquid reaction device according to claim 1, characterized in that: The second ammonia leaching kettle (2) is connected to the ammonia absorption kettle (8) via a pipeline.

8. The high-efficiency ammonia gas-liquid reaction device according to claim 1, characterized in that: The No. 3 ammonia leaching kettle (3) is connected to the ammonia absorption kettle (8) via a pipeline.

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