Incineration treatment system for aluminum residues generated after production of triisobutyl aluminum

Abstract

The invention relates to an incineration treatment system for aluminum residues generated after production of triisobutyl aluminum, belongs to the technical field of triisobutyl aluminum, and solves the problem that an existing incineration system is low in treatment efficiency. The system comprises a feeding unit, a processing unit and a combustion unit, the feeding unit comprises a low-temperature liquid nitrogen storage tank, a raw material tank, a vaporizer, a nitrogen line and a raw material tank kettle feeding material line; the nitrogen line comprises a nitrogen main line, a first nitrogen branch line, a second nitrogen branch line and a third nitrogen branch line; the treatment unit comprises a mixing and stirring reaction kettle and an emptying line, the emptying line comprises an emptying line main line and an emptying line branch line, and a motor and a liquid full plug wire are mounted in the mixing and stirring reaction kettle; the combustion unit comprises an incinerator, a secondary combustion chamber, a spray gun device, an air supply device, a secondary combustion chamber material line and a nitrogen blowback line; valves are arranged on the nitrogen line, the raw material tank kettle feeding material line, the emptying line, the secondary combustion chamber material line and the nitrogen back flushing line and are used for adjusting flowing of nitrogen and materials. The system is high in processing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of triisobutylaluminum, in particular to a system for incinerating aluminum residues after producing triisobutylaluminum. BACKGROUND

[0002] Triisobutylaluminum is an important organoaluminum compound, colorless transparent liquid, which can usually be used as a polymerization catalyst for butadiene rubber, synthetic resin, synthetic fiber and olefin polymer or as a reducing agent and catalyst in organic synthesis, such as reducing carbonyl compounds to alcohols or ethers; it can also be used as a high-energy raw material for jet engine ignition systems or for preparing other organometallic compounds. The residues generated during its production contain various chemical substances, such as triisobutylaluminum, n-hexane, aluminum trioxide, etc. If these aluminum residues are discharged directly without treatment, they will cause serious pollution to the environment, including soil pollution, water pollution and air pollution; and the aluminum residues contain highly active triisobutylaluminum, which can self-ignite in the air and react violently with water and release flammable alkane gas. If the residues are not properly treated, it may cause fire or explosion accidents, posing a threat to personnel and equipment safety.

[0003] The existing aluminum residues after triisobutylaluminum production mainly include recycling and reuse, harmless treatment, landfill treatment, resource utilization and heat treatment methods. The recycling and reuse treatment method of aluminum residues has high resource utilization rate and can reduce the waste of raw materials, but it requires additional equipment and energy, and may generate waste liquid that needs further treatment; if the aluminum residues cannot be recycled, they will usually be subjected to harmless treatment, such as hydrolysis treatment or oxidation treatment, which is simple in process, low in cost and suitable for small-scale treatment, but has high environmental and safety risks; for aluminum residues that cannot be recycled or subjected to harmless treatment, they will usually be subjected to safe landfill, which occupies land resources and may have long-term impact on the environment; aluminum residues can also be converted into valuable by-products through further processing, but additional processing equipment and technology are required, which has high technical difficulty and cost; aluminum residues can also be treated by heat treatment (high-temperature incineration or plasma treatment), but this method has poor material processing continuity, high energy consumption and high cost.

[0004] Therefore, the high-temperature incineration method and system for aluminum residues generated after producing triisobutylaluminum need to be continuously optimized. SUMMARY

[0005] In view of the above analysis, the embodiments of the present application aim to provide a system for incinerating aluminum residues after producing triisobutylaluminum, in order to solve the problems of poor material processing continuity, great safety hazards and low processing efficiency of the existing high-temperature incineration system for aluminum residues after triisobutylaluminum production.

[0006] The purpose of the present application is mainly realized by the following technical solutions:

[0007] The application provides a system for incineration treatment of aluminum residues after production of triisobutyl aluminum, comprising a feeding unit, a treatment unit and a combustion unit.

[0008] The feeding unit comprises a low-temperature liquid nitrogen storage tank (1), a raw material tank (3), a vaporizer (10), a nitrogen line (11) and a raw material tank inlet material line (16), and the nitrogen line (11) comprises a nitrogen main line (12), a first nitrogen branch line (13), a second nitrogen branch line (14) and a third nitrogen branch line (15).

[0009] The treatment unit comprises a mixing and stirring reaction kettle (2) and a vent line (20), the vent line (20) comprises a vent line main line and a vent line branch line, and the mixing and stirring reaction kettle (2) is provided with a motor (M) and a liquid full plug wire (8).

[0010] The combustion unit comprises an incinerator (6), a secondary combustion chamber (5), a lance device (7), an air supply device (4), a secondary combustion chamber material line (17) and a nitrogen back flushing line (18).

[0011] Valves are arranged on the nitrogen line (11), the raw material tank inlet material line (16), the vent line (20), the secondary combustion chamber material line (17) and the nitrogen back flushing line (18) for adjusting the flow of nitrogen and materials.

[0012] Further, the first nitrogen branch line (13), the second nitrogen branch line (14) and the third nitrogen branch line (15) are connected in parallel on the nitrogen main line (12).

[0013] Both ends of the nitrogen main line (12) are connected with the low-temperature liquid nitrogen storage tank (1) and the third nitrogen branch line (15), respectively.

[0014] One end of the first nitrogen branch line (13) is connected with the nitrogen main line (12), and the other end is connected with the mixing and stirring reaction kettle (2).

[0015] One end of the second nitrogen branch line (14) is connected with the nitrogen main line (12), and the other end is connected with the raw material tank inlet material line (16).

[0016] One end of the third nitrogen branch line (15) is connected with the nitrogen main line (12), and the other end is connected with the raw material tank (3).

[0017] Further, one end of the vent line main line is connected with the mixing and stirring reaction kettle (2), and the other end is directly connected with the ground.

[0018] Further, the incinerator (6) and the secondary combustion chamber (5) are connected from bottom to top.

[0019] The two combustion chambers (5) are connected with a lance device (7) on one side, and the air supply device (4) and the lance device (7) are connected through an air supply pipeline;

[0020] One end of the two combustion chamber material line (17) is connected with the liquid full wiring (8) in the mixing and stirring reaction kettle (2), and the other end is connected with the lance device (7);

[0021] One end of the nitrogen back flushing line (18) is connected with the nitrogen main line (12), and the other end is connected with the two combustion chamber material line (17).

[0022] Further, the aluminum residue incineration treatment system further comprises a purging and venting unit, which comprises a nitrogen purging material line (19), a nitrogen purging and venting line (22), a first nitrogen head (33#) and a second nitrogen head (34#).

[0023] Further, the two ends of the nitrogen purging material line (19) are respectively connected with the nitrogen main line (12) and the two combustion chamber material line (17);

[0024] The nitrogen main line (12) and the vent line main line are connected through the nitrogen purging and venting line (22).

[0025] Further, the diameters of the raw material tank kettle inlet material line (16) and the valves arranged thereon, the two combustion chamber material line (17) and the valves arranged thereon, and the vent line (20) and the valves arranged thereon are equal, and are all greater than or equal to DN50;

[0026] The diameters of the nitrogen line (11) and the valves arranged thereon, the nitrogen back flushing line (18) and the valves arranged thereon, the nitrogen purging material line (19) and the valves arranged thereon, the nitrogen purging and venting line (22) and the valves arranged thereon are equal, and are all greater than or equal to DN20, which is smaller than the diameters of the raw material tank kettle inlet material line (16) and the two combustion chamber material line (17).

[0027] Further, the volume of the mixing and stirring reaction kettle is greater than or equal to 4m 3 , and the pressure bearing is greater than or equal to 0.8MPa;

[0028] The volume of the raw material tank is greater than or equal to 2m 3 , and the pressure bearing is greater than or equal to 0.6Mpa.

[0029] Further, in the direction away from the low-temperature liquid nitrogen storage tank (1), the nitrogen main line (12) is sequentially provided with a vaporizer inlet valve (1#), a vaporizer (10), a vaporizer outlet regulating valve (2#), a nitrogen line total valve (3#) and a nitrogen line pressure gauge (PG2);

[0030] The first nitrogen branch line (13) is sequentially provided with a tank inlet nitrogen solenoid valve (4#) and a reaction tank nitrogen tank root valve (5#) in the direction close to the mixed stirring reaction kettle (2);

[0031] The second nitrogen branch line (14) is sequentially provided with a first nitrogen purge feed line ball valve (9#) and a second nitrogen purge feed line ball valve (10#) in the direction close to the raw material tank inlet kettle material line (16);

[0032] The third nitrogen branch line (15) is sequentially provided with a nitrogen line ball valve (11#), a nitrogen hose connection line ball valve (12#) and a raw material tank root nitrogen valve (28#) in the direction close to the raw material tank (3), and a raw material tank pressure gauge (PG4) is installed between the nitrogen hose connection line ball valve (12#) and the raw material tank root nitrogen valve (28#).

[0033] The application also provides a production of aluminum residue after burning treatment process method of triisobutyl aluminum, which is realized by the above-mentioned aluminum residue burning treatment system.

[0034] Compared with the prior art, the application can realize at least one of the following beneficial effects:

[0035] 1、The production of aluminum residue after burning treatment system of triisobutyl aluminum in the application ensures that the aluminum residue does not contact with air before entering the incinerator and the secondary combustion chamber through the design of nitrogen lines, nitrogen purge material lines and nitrogen back flushing lines in the feeding unit, the treatment unit, the combustion unit and the purge and emptying unit, greatly improving the safety of the treatment process.

[0036] 2、The production of aluminum residue after burning treatment system of triisobutyl aluminum in the application controls the flow of nitrogen and material through the control of valves at each place in the system, such as nitrogen lines, raw material tank inlet kettle material lines, emptying lines, secondary combustion chamber material lines, nitrogen back flushing lines, nitrogen purge material lines and nitrogen purge emptying lines, controls the amount of feed to the incinerator and the secondary combustion chamber, ensures the continuity and safety of the aluminum residue material treatment, and improves the treatment efficiency; The treatment efficiency of the incineration treatment system in the application can reach 50kg / h, which is more than 10 times higher than the efficiency of the existing hydrolysis method or cement kiln for treating aluminum residue.

[0037] In the application, the above-mentioned technical solutions can be combined with each other to realize more preferred combination schemes. Other features and advantages of the application will be described in the subsequent specification, and some advantages will become apparent from the specification or be understood by implementing the application. The purpose and other advantages of the application can be realized and obtained from the content specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application.

[0039] Figure 1 The figure is only used for showing the specific embodiment, and is not considered as the limitation of the application, and the same reference signs represent the same parts throughout the drawings.

[0040] Reference signs:

[0041] 1 - low temperature liquid nitrogen storage tank; 2 - mixed stirring reaction kettle; 3 - raw material tank; 4 - air supply device; 5 - two combustion chambers; 6 - incinerator; 7 - spray gun device; 8 - liquid full wiring; 9 - material full wiring; 10 - vaporizer; 11 - nitrogen line; 12 - nitrogen main line; 13 - first nitrogen branch line; 14 - second nitrogen branch line; 15 - third nitrogen branch line; 16 - raw material tank kettle material line; 17 - two combustion chamber material line; 18 - nitrogen back flushing line; 19 - nitrogen purge material line; 20 - vent line; 21 - spray gun blockage observation port and spray gun blockage repair port; 22 - nitrogen purge vent line; LG - glass plate liquid level meter; PG - low temperature liquid nitrogen storage tank pressure gauge; PG1 - reaction kettle pressure gauge; PG2 - nitrogen line pressure gauge; PG3 - two combustion chamber material line pressure gauge; PG4 - raw material tank pressure gauge; M - motor; 1# - vaporizer inlet valve; 2# - vaporizer outlet pressure regulating valve; 3# - nitrogen line total valve; 4# - kettle nitrogen solenoid valve; 5# - reaction kettle nitrogen tank root valve; 6# - first nitrogen purge material line ball valve; 7# - second nitrogen purge material line ball valve; 8# - nitrogen purge vent line ball valve; 9# - first nitrogen purge feed line ball valve; 10# - second nitrogen purge feed line ball valve; 11# - nitrogen line ball valve; 12# - nitrogen hose connection line ball valve; 13# - material hose connection line ball valve; 14# - kettle material inlet solenoid valve; 15# - material line ball valve; 16# - reaction kettle feed line ball valve; 17# - reaction kettle discharge line ball valve; 18# - two combustion chamber material solenoid valve; 19# - two combustion chamber material line total valve; 20# - first two combustion chamber spray gun feed ball valve; 21# - second two combustion chamber spray gun feed ball valve; 22# - two combustion chamber material inlet solenoid valve; 23# - two combustion chamber nitrogen back flushing line ball valve; 24# - nitrogen back flushing line ball valve; 25# - reaction kettle vent cross line ball valve; 26# - reaction kettle safety valve front valve; 27# - raw material tank tank root material valve; 28# - raw material tank tank root nitrogen valve; 29# - pressure regulating valve; 30# - control valve; 31# - first check valve; 32# - second check valve; 33# - first nitrogen swivel head; 34# - second nitrogen swivel head; 35# - safety valve. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present application will be described in detail below with reference to the drawings, wherein the drawings constitute a part of this application and are used to explain the principles of the embodiments of the present application, and are not used to limit the scope of the present application.

[0043] The application provides a system for incineration treatment of aluminum residues after production of triisobutyl aluminum, which comprises a feeding unit, a treatment unit and a combustion unit.

[0044] The feeding unit comprises a low-temperature liquid nitrogen storage tank (1), a raw material tank (3), a vaporizer (10), a nitrogen line (11) and a raw material tank feeding line (16).

[0045] The treatment unit comprises a mixing and stirring reaction kettle (2), wherein a motor (M) and a liquid full plug line (8) are installed in the mixing and stirring reaction kettle (2), and the mixing and stirring reaction kettle (2) is connected with a vent line (20) comprising a vent line main line and a vent line branch line.

[0046] The combustion unit comprises an incinerator (6), a secondary combustion chamber (5), a lance device (7), an air supply device (4), a secondary combustion chamber material line (17) and a nitrogen back flushing line (18).

[0047] Specifically, the low-temperature liquid nitrogen storage tank (1) is connected with the raw material tank (3) through the nitrogen line (11); the raw material tank (3) is connected with the liquid full plug line (8) of the mixing and stirring reaction kettle (2) through the raw material tank feeding line (16); the lance device (7) is connected with the liquid full plug line (8) of the mixing and stirring reaction kettle (2) through the secondary combustion chamber material line (17), and the nitrogen back flushing line (18) is connected with the secondary combustion chamber material line (17) and the nitrogen line (11) at both ends.

[0048] The nitrogen line (11) comprises a nitrogen main line (12) and a plurality of branch lines connected in parallel with the nitrogen main line (12), and the mixing and stirring reaction kettle (2), the raw material tank (3) and the raw material tank feeding line (16) are connected with the nitrogen main line (12) through the branch lines arranged in parallel;

[0049] The branch lines comprise a first nitrogen branch line (13), a second nitrogen branch line (14) and a third nitrogen branch line (15); one end of the first nitrogen branch line (13) is connected with the nitrogen main line (12), and the other end is connected with the mixing and stirring reaction kettle (2); one end of the second nitrogen branch line (14) is connected with the nitrogen main line (12), and the other end is connected with the raw material tank feeding line (16); one end of the third nitrogen branch line (15) is connected with the nitrogen main line (12), and the other end is connected with the raw material tank (3).

[0050] The aluminum residue incineration treatment system further comprises a purging and venting unit, which comprises a nitrogen purging material line (19) and a nitrogen purging venting line (22); two ends of the nitrogen purging material line (19) are connected with the nitrogen main line (12) and the second combustion chamber material line (17) respectively; two ends of the nitrogen purging venting line (22) are connected with the nitrogen main line (12) and the venting line (20) respectively.

[0051] Valves are arranged on the nitrogen line (11), the raw material tank into the reactor material line (16), the venting line (20), the second combustion chamber material line (17), the nitrogen back flushing line (18), the nitrogen purging material line (19) and the nitrogen purging venting line (22) for adjusting the flow of nitrogen and material.

[0052] Specifically, in the feeding unit, one side of the low-temperature liquid nitrogen storage tank (1) is provided with a low-temperature liquid nitrogen storage tank pressure gauge (PG) and a glass plate liquid level meter (LG); two ends of the nitrogen main line (12) are connected with the low-temperature liquid nitrogen storage tank (1) and the third nitrogen branch line (15) respectively;

[0053] In the direction away from the low-temperature liquid nitrogen storage tank (1), the nitrogen main line (12) is sequentially provided with a vaporizer inlet valve (1#), a vaporizer (10), a vaporizer outlet adjusting valve (2#), a nitrogen line total valve (3#) and a nitrogen line pressure gauge (PG2); one end of the first nitrogen branch line (13) is connected with the nitrogen main line (12), and the other end is connected with the mixed stirring reaction kettle (2); in the direction close to the mixed stirring reaction kettle (2), the first nitrogen branch line (13) is sequentially provided with a kettle inlet nitrogen electromagnetic valve (4#) and a reaction kettle nitrogen tank root valve (5#); one end of the second nitrogen branch line (14) is connected with the nitrogen main line (13), and the other end is connected with the raw material tank into the reactor material line (16); in the direction close to the raw material tank into the reactor material line (16), the second nitrogen branch line (14) is sequentially provided with a first nitrogen purging material line ball valve (9#) and a second nitrogen purging material line ball valve (10#); one end of the third nitrogen branch line (15) is connected with the nitrogen main line (12), and the other end is connected with the raw material tank (3); in the direction close to the raw material tank (3), the third nitrogen branch line (15) is sequentially provided with a nitrogen line ball valve (11#), a nitrogen hose connecting line ball valve (12#) and a raw material tank root nitrogen valve (28#); a raw material tank pressure gauge (PG4) is arranged between the nitrogen hose connecting line ball valve (12#) and the raw material tank root nitrogen valve (28#);

[0054] One end of the raw material tank into the reactor material line (16) is connected with the mixed stirring reaction kettle (2), and the other end is connected with the raw material tank (3); in the direction away from the raw material tank (3), the raw material tank into the reactor material line (16) is sequentially provided with a raw material tank tank root material valve (27#), a material hose connecting line ball valve (13#), a kettle material inlet electromagnetic valve (14#), a raw material tank into the reactor material line ball valve (15#) and a reaction kettle material line ball valve (16#).

[0055] Specifically, in the processing unit, the mixed stirring reaction kettle (2) is provided with a reaction kettle pressure gauge (PG1), a motor (M) and a liquid full plug (8) are arranged in the mixed stirring reaction kettle (2); one end of the vent line main line is connected with the mixed stirring reaction kettle (2), and the other end is directly connected with the ground; in the direction away from the mixed stirring reaction kettle (2), a reaction kettle safety valve front valve (26#) and a safety valve (35#) are arranged in sequence; the two ends of the vent line branch line are respectively connected with the vent line main line, and a reaction kettle vent cross line ball valve (25#) is arranged on the vent line branch line.

[0056] Specifically, in the combustion unit, the incinerator (6) and the second combustion chamber (5) are communicated, one side of the second combustion chamber (5) is connected with the lance device (7), one end of the air supply device (4) is connected with the lance device (7), the air supply device (4) and the lance device (7) are connected through an air supply pipeline, in the direction close to the lance device (4), a pressure regulating valve (29#), a control valve (30#) and a first check valve (31#) are arranged on the air supply pipeline in sequence; one end of the lance device (4) is connected with the second combustion chamber (5), and the other end is provided with a lance blockage observation opening and a lance blockage maintenance opening (21);

[0057] One end of the second combustion chamber material line (17) is connected with the liquid full plug (8) in the mixed stirring reaction kettle (2), and the other end is connected with the lance device (7); in the direction away from the raw material tank kettle material line (16), the second combustion chamber material line (17) is sequentially provided with a reaction kettle discharge line ball valve (17#), a second combustion chamber material electromagnetic valve (18#), a second combustion chamber material line total valve (19#), a first second combustion chamber lance feeding ball valve (20#), a second second combustion chamber lance feeding ball valve (21#), a second combustion chamber material inlet electromagnetic valve (22#) and a second check valve (32#); a second combustion chamber material line pressure gauge (PG3) is arranged at one end close to the second combustion chamber material line total valve (19#) between the second combustion chamber material electromagnetic valve (18#) and the second combustion chamber material line total valve (19#);

[0058] The nitrogen back flushing line (18) is connected with the nitrogen main line (12) and the second combustion chamber material line (17) in parallel; one end of the nitrogen back flushing line (18) is connected with the nitrogen main line (12) and is arranged close to the nitrogen line total valve (3#) between the vaporizer outlet pressure regulating valve (2#) and the nitrogen line total valve (3#); the other end of the nitrogen back flushing line (18) is arranged between the first second combustion chamber lance feeding ball valve (20#) and the second second combustion chamber lance feeding ball valve (21#); in the direction away from the nitrogen main line (12), a nitrogen back flushing line ball valve (24#) and a second combustion chamber nitrogen back flushing line ball valve (23#) are arranged on the nitrogen back flushing line (18) in sequence.

[0059] The nitrogen purge material line (19) is connected with the nitrogen main line (12) and the two combustion chamber material line (17) respectively at two ends of the nitrogen purge material line (19), wherein one end of the nitrogen purge material line (19) is arranged between the nitrogen line total valve (3#) on the nitrogen main line and the tank inlet nitrogen electromagnetic valve (4#) on the first nitrogen branch line, and the other end of the nitrogen purge material line (19) is arranged between the reaction tank discharge line ball valve (17#) and the two combustion chamber material electromagnetic valve (18#); the first nitrogen purge material line ball valve (6#) and the second nitrogen purge material line ball valve (7#) are arranged on the nitrogen purge material line (19);

[0060] The aluminum residue incineration treatment system further comprises two nitrogen flappers, the first nitrogen flapper (33#) is arranged on the two combustion chamber material line (17) between the two combustion chamber material electromagnetic valve (18#) and the two combustion chamber material line pressure gauge (PG3);

[0061] The second nitrogen flapper (34#) is arranged on the nitrogen back flushing line (18) between the nitrogen back flushing line ball valve (24#) and the two combustion chamber nitrogen back flushing line ball valve (23#) and close to one end of the two combustion chamber nitrogen back flushing line ball valve (23#).

[0062] The nitrogen main line (12) and the vent line main line are connected through the nitrogen purge vent line (22), and the nitrogen purge vent line ball valve (8#) is arranged on the nitrogen purge vent line (22).

[0063] It should be noted that the diameters of the raw material tank inlet tank material line (16) and the valves arranged thereon, the two combustion chamber material line (17) and the valves arranged thereon, and the vent line (20) and the valves arranged thereon are equal and are all greater than or equal to DN50; the diameters of the nitrogen line (11) and the valves arranged thereon, the nitrogen back flushing line (18) and the valves arranged thereon, the nitrogen purge material line (19) and the valves arranged thereon, and the nitrogen purge vent line (22) and the valves arranged thereon are equal and are all greater than or equal to DN20, and are smaller than the diameters of the raw material tank inlet tank material line (16) and the two combustion chamber material line (17);

[0064] The volume of the mixed stirring reaction tank is greater than or equal to 4m 3 , and the pressure bearing is greater than or equal to 0.8MPa;

[0065] The refractoriness of the refractory material in the two combustion chambers and the incinerator is greater than or equal to 2000℃;

[0066] The material of the spray gun is high-purity steel with a refractoriness greater than or equal to 2000℃;

[0067] The volume of the raw material tank is greater than or equal to 2m 3 , and the pressure bearing is greater than or equal to 0.6MPa.

[0068] The application also provides a production process method of aluminum residue after burning treatment of triisobutyl aluminum, which is realized by the above-mentioned aluminum residue burning treatment system and includes the following steps.

[0069] S1: according to the maximum volume of the raw material tank, the on-site material is quantitatively stored in the raw material tank;

[0070] S2: the raw material tank is subjected to air tightness detection, and after the air tightness is qualified, nitrogen is introduced into the raw material tank to sweep and stir the material in the raw material tank so that the solid and liquid are fully mixed;

[0071] S3: the material in the raw material tank is fully pressed into the mixed stirring reaction kettle by the nitrogen pressure in the raw material tank, and the material in the mixed stirring reaction kettle is fully stirred by the motor;

[0072] S4: the fuel in the incinerator is ignited, and the fuel in the incinerator is kept in a continuous combustion state;

[0073] S5: after the material in the mixed stirring reaction kettle is fully stirred, nitrogen is introduced into the mixed stirring reaction kettle to pressurize, and after the pressure is pressurized to a specified pressure range, the pressure in the mixed stirring reaction kettle is kept in a specified range, the material in the mixed stirring reaction kettle is continuously pressed into the spray gun device by the nitrogen pressure in the mixed stirring reaction kettle, the spray gun device sprays the material into the secondary combustion chamber, and the material is fully burned in the secondary combustion chamber and the incinerator;

[0074] S6: whether the material in the mixed stirring reaction kettle has been fully pressed into the spray gun and sprayed is determined according to whether the liquid level of the material in the mixed stirring reaction kettle is below the liquid full line;

[0075] S7: after the material in the mixed stirring reaction kettle has been fully pressed into the spray gun and sprayed into the secondary combustion chamber and the incinerator for full combustion, the residual material in the spray gun is swept into the secondary combustion chamber for combustion by nitrogen;

[0076] S8: the mixed stirring reaction kettle is depressurized to 0 MPa, the residual material in the secondary combustion chamber material line is backblown into the mixed stirring reaction kettle by nitrogen, and the system is closed after the sweeping is completed.

[0077] Specifically, in step S1, according to the maximum volume of the raw material tank, the on-site material is quantitatively stored in the raw material tank; the quantitative storage amount of the on-site material is not more than 80% of the maximum volume of the raw material tank. In actual operation, after the on-site material is quantitatively stored in the raw material tank, the raw material tank is connected with the nitrogen line and the raw material tank inlet material line, and the raw material tank is connected to the burning treatment system.

[0078] Specifically, in step S2, the airtightness detection of the raw material tank refers to the airtightness detection of the two flange connections at the tank root of the raw material tank. The airtightness detection is that nitrogen is introduced into the nitrogen line. When the nitrogen line pressure gauge (PG2) shows that the nitrogen line (11) has been pressurized to 0.4 MPa or more, the detection is carried out with soap water. If there is no air bubble leakage, the airtightness is qualified. After the airtightness is qualified, the raw material tank root material valve (27#) and the raw material tank root nitrogen valve (28#) are opened. Nitrogen is introduced into the raw material tank (3) through the nitrogen line (11). The material in the raw material tank (3) is swept and stirred to fully mix the solid and liquid.

[0079] In actual operation, first, the vaporizer inlet valve (1#) and the vaporizer outlet regulating valve (2#) are opened. The opening degree of the vaporizer inlet valve (1#) and the vaporizer outlet regulating valve (2#) is adjusted. The vaporizer inlet valve (1#) is fully open. The opening degree of the vaporizer outlet regulating valve (2#) is controlled at 20-50%. For example, the opening degree of the vaporizer outlet regulating valve is 22%, 24%, 25%, 26%, 28%, 30%, 32%, 34%, 35%, 36%, 38%, 40%, 42%, 44%, 45%, 46%, 48%). The outlet pressure of the vaporizer (10) is maintained at 0.4-0.6 MPa to provide high-purity pressure for the entire incineration treatment system. Then, the nitrogen line total valve (3#) is opened (the opening degree is full). After observing that the nitrogen line pressure gauge (PG2) indicates that the pressure is in the range of 0.4-0.6 MPa, the nitrogen line ball valve (11#), the nitrogen hose connection line ball valve (12#), the first nitrogen blowing feed line ball valve (9#), the second nitrogen blowing feed line ball valve (10#), the material hose connection line ball valve (13#), the kettle material inlet electromagnetic valve (14#), and the raw material tank kettle material line ball valve (15#) (the opening degree of the above valves is full) are opened. The airtightness of the two flange connections at the tank root of the raw material tank is detected. After the airtightness detection is qualified, the raw material tank root material valve (27#) and the raw material tank root nitrogen valve (28#) are opened. Nitrogen is introduced into the raw material tank (3) through the nitrogen line (11). The material in the raw material tank (3) is swept and stirred to fully mix the solid and liquid. After the raw material tank (3) is pressurized to 0.4-0.6 MPa, the first nitrogen blowing feed line ball valve (9#) and the second nitrogen blowing feed line ball valve (10#) are closed to prepare for pressurizing the material into the mixing and stirring reaction kettle (2).

[0080] Specifically, in step S3, the nitrogen pressure in the raw material tank (3) is used to press the material in the raw material tank (3) into the mixing and stirring reaction kettle (2) through the raw material tank kettle material line (16). When there is an air passing sound in the raw material tank kettle material line (16), it can be confirmed that the material in the raw material tank (3) has been completely pressed into the mixing and stirring reaction kettle (2). The material in the mixing and stirring reaction kettle (2) is fully stirred by the motor (M).

[0081] In actual operation, the cross-line ball valve (25#) of the reaction kettle and the reaction kettle feed line ball valve (16#) are opened, and the material in the raw material tank (3) is pressed into the mixing and stirring reaction kettle (2) by using the pressure in the raw material tank (3). If the nitrogen pressure is low and cannot be pressed, the raw material tank root nitrogen valve (28#) is opened, the raw material tank (3) is pressurized to 0.4-0.6 MPa, and the material continues to be pressed into the mixing and stirring reaction kettle (2) until the material in the raw material tank (3) is completely pressed. If there is a sound of air passing through the raw material tank feed line (16) in the raw material tank (3), it means that the material in the raw material tank (3) has been completely pressed, and the raw material tank feed line (16) is purged by using the remaining pressure or pressurizing in the raw material tank (3). The material is blown into the mixing and stirring reaction kettle (2) to ensure that there is no residual material in the raw material tank feed line (16). After the raw material tank feed line (16) is purged, the raw material tank root material valve (27#), the material hose connection line ball valve (13#), the kettle material inlet solenoid valve (14#), the raw material tank feed line ball valve (15#), the reaction kettle feed line ball valve (16#) and the reaction kettle emptying cross-line ball valve (25#) are closed. The motor frequency is 37%-66% (for example, the motor frequency is 40%, 42%, 44%, 46%, 48%, 50%, 52%, 54%, 56%, 58%, 60%, 62%, 64%). The stirring time is 2h.

[0082] It should be noted that during the process of pressing the material in the raw material tank (3) into the mixing and stirring reaction kettle (2) by using the pressure in the raw material tank (3), the opening of the nitrogen line total valve (3#), the nitrogen line ball valve (11#), the nitrogen hose connection line ball valve (12#), the raw material tank root nitrogen valve (28#), the raw material tank root material valve (27#), the material hose connection line ball valve (13#), the kettle material inlet solenoid valve (14#), the raw material tank feed line ball valve (15#), the reaction kettle feed line ball valve (16#) and the reaction kettle emptying cross-line ball valve (25#) is fully open until the material in the raw material tank (3) is completely pressed into the mixing and stirring reaction kettle (2). If the pressure in the raw material tank (3) exceeds 0.6 MPa during the material pressing process, the nitrogen hose connection line ball valve (12#) is closed. During the process of pressing the material in the raw material tank (3) into the mixing and stirring reaction kettle (2) by using the pressure in the raw material tank (3), the pressure in the raw material tank (3) is always maintained at 0.4-0.6 MPa, which can ensure that the material in the raw material tank (3) is completely pressed into the mixing and stirring reaction kettle (2). When the material enters the mixing and stirring reaction kettle (2), the gas in the mixing and stirring reaction kettle (2) is slowly discharged through the vent line.

[0083] Specifically, in step S5, after stirring is completed, nitrogen is introduced into the mixing and stirring reaction kettle through the nitrogen line to pressurize the mixing and stirring reaction kettle. After the pressure reaches the specified pressure range, the pressure in the mixing and stirring reaction kettle is maintained within the specified range. The nitrogen pressure in the mixing and stirring reaction kettle is used to continuously press the material in the mixing and stirring reaction kettle into the lance device through the second combustion chamber material line. The lance device sprays the material into the second combustion chamber, and the material is fully burned in the second combustion chamber and the incinerator.

[0084] In actual operation, after stirring is completed, the kettle nitrogen inlet solenoid valve (4#) and the reaction kettle nitrogen tank root valve (5#) are opened, nitrogen is introduced into the mixing and stirring reaction kettle (2) to pressurize the mixing and stirring reaction kettle. After the pressure reaches the specified pressure range of 0.2-0.4 MPa, the reaction kettle discharge line ball valve (17#) provided on the second combustion chamber material line (17), the second combustion chamber material removal solenoid valve (18#), the second combustion chamber material line master valve (19#), the first second combustion chamber lance feed ball valve (20#), the second second combustion chamber lance feed ball valve (21#), the second combustion chamber material inlet solenoid valve (22#), and the second one-way valve (32#) are opened. The material is pressurized and sent to the lance device (7) through the second combustion chamber material line (17). The lance device (7) sprays the material into the second combustion chamber (5), and the material is fully burned in the second combustion chamber (5) and the incinerator (6).

[0085] It should be noted that during the process of pressing the material from the mixing and stirring reaction kettle (2) into the lance device (7), the opening degrees of the kettle nitrogen inlet solenoid valve (4#), the second combustion chamber material removal solenoid valve (18#), and the second combustion chamber material inlet solenoid valve (22#) are 20-80%. For example, the opening degrees of the kettle nitrogen inlet solenoid valve (4#), the second combustion chamber material removal solenoid valve (18#), and the second combustion chamber material inlet solenoid valve (22#) are 22%, 24%, 26%, 28%, 30%, 32%, 34%, 36%, 38%, 40%, 42%, 44%, 46%, 48%, 50%, 52%, 54%, 56%, 60%, 62%, 64%, 66%, 68%, 70%, 72%, 74%, 76%, 78%, and the remaining valves are fully open.

[0086] It should be noted that the air supply device (4) is opened synchronously when the lance device (7) sprays the material into the secondary combustion chamber (5), and through the precise adjustment of the control valve (30#), the pressure regulating valve (29#) and the first one-way valve (31#) of the air supply device (4) (the opening degree of the control valve (30#) and the regulating valve (29#) is 20-80%, and the first one-way valve (31#) is fully open), it is ensured that the air provided by the air supply device (4) enters the lance device (7) and the volume ratio of the material in the lance device (7) is ≤1:3. Exemplarily, the opening degree of the control valve (30#) and the regulating valve (29#) is 22%, 24%, 26%, 28%, 30%, 32%, 34%, 36%, 38%, 40%, 42%, 44%, 46%, 48%, 50%, 52%, 54%, 56%, 60%, 62%, 64%, 66%, 68%, 70%, 72%, 74%, 76%, 78%.

[0087] Specifically, in step S6, whether the material in the mixing and stirring reaction kettle (2) has been completely pressed into the lance and sprayed is determined according to whether the liquid level of the material in the mixing and stirring reaction kettle (2) is below the liquid full plug line (8) or whether there is an air flow sound in the secondary combustion chamber material line (17).

[0088] It should be noted that when the liquid level of the material in the mixing and stirring reaction kettle (2) is below the liquid full plug line (8), an air flow sound will immediately occur in the secondary combustion chamber material line (17), and these two phenomena occur synchronously and can be used to determine whether the material in the mixing and stirring reaction kettle (2) has been completely pressed into the lance device (7) and sprayed.

[0089] Specifically, in step S7, after the material in the mixing and stirring reaction kettle (2) has been completely pressed into the lance device (7) and sprayed into the secondary combustion chamber (5) and the incinerator (6) for sufficient combustion, the secondary combustion chamber material line (17) is closed, the nitrogen back flushing line (18), the nitrogen purging material line (19) and the nitrogen purging vent line (22) are opened, and the remaining material in the lance device (7) is purged into the secondary combustion chamber (5) for combustion by using nitrogen, and then the nitrogen back flushing line (18), the nitrogen purging material line (19) and the nitrogen purging vent line (22) are closed.

[0090] In actual operation, after the materials in the mixing and stirring reaction kettle (2) are all pressed into the lance device (7) and sprayed into the second combustion chamber (5) and the incinerator (6) for sufficient combustion, the first second combustion chamber lance feed ball valve (20#) on the second combustion chamber material line (17) is closed, at this time, the reaction kettle discharge line ball valve (17#), the second combustion chamber material removal solenoid valve (18#), and the second combustion chamber material line total valve (19#) are still in the fully open state; then the nitrogen back flushing line ball valve (24#, fully open), the second combustion chamber nitrogen back flushing line ball valve (23#, fully open), the first nitrogen purge material line ball valve (6#, fully open), the second nitrogen purge material line ball valve (7#, fully open), and the nitrogen purge vent line ball valve (8#, fully open) are opened; the materials in the lance metal hose are blown into the second combustion chamber (5) and the incinerator (6) by nitrogen for combustion until no materials are sprayed out of the lance, and then the second second combustion chamber lance feed ball valve (21#) and the second combustion chamber material inlet solenoid valve (22#) are closed.

[0091] Specifically, in step S8, the mixing and stirring reaction kettle (2) is depressurized to 0 MPa, and the residual materials in the second combustion chamber material line (17) are back-flushed into the mixing and stirring reaction kettle (2) by nitrogen, and after the purging is completed, the system is closed.

[0092] In actual operation, the reaction kettle vent line ball valve (25#, fully open) is opened, the mixing and stirring reaction kettle (2) is depressurized to 0 MPa, and then the first second combustion chamber lance feed ball valve (20#, fully open) is opened, the residual materials in the second combustion chamber material line (17) are back-flushed into the mixing and stirring reaction kettle (2) by nitrogen, to avoid residual materials in the second combustion chamber material line (17), and after the purging is completed, the reaction kettle discharge line ball valve (17#), the second combustion chamber material removal solenoid valve (18#), the second combustion chamber material line total valve (19#), and the first second combustion chamber lance feed ball valve (20#) provided on the second combustion chamber material line (17) are closed, and the second combustion chamber nitrogen back flushing line ball valve (23#) and the nitrogen back flushing line ball valve (24#) provided on the nitrogen back flushing line (18) are closed.

[0093] The production of the aluminum residue after the production of triisobutyl aluminum is incinerated by the incineration treatment system and process treatment method, through the design of the nitrogen line, the nitrogen purge material line, and the nitrogen back flushing line, it is ensured that the aluminum residue does not contact with air before entering the incinerator and the second combustion chamber, greatly improving the safety of the treatment process. At the same time, through the precise control and adjustment of the valves in the system, the amount of feed into the incinerator and the second combustion chamber is controlled, ensuring the continuity and safety of the aluminum residue material treatment, and improving the treatment efficiency. The incineration treatment system and process treatment method can achieve a treatment efficiency of 50 kg / h, which is more than 10 times higher than the efficiency of the existing hydrolysis method or the cement kiln for treating aluminum residue.

[0094] Example 1

[0095] The embodiment provides a system for incineration treatment of aluminum residues after production of triisobutyl aluminum, which comprises a feeding unit, a treatment unit and a combustion unit, as shown in the figure. Figure 1

[0096] The feeding unit comprises a low-temperature liquid nitrogen storage tank (1), a raw material tank (3), a vaporizer (10), a nitrogen line (11) and a raw material tank feeding line (16).

[0097] The treatment unit comprises a mixing and stirring reaction kettle (2), wherein a motor (M) and a liquid full plug line (8) are installed in the mixing and stirring reaction kettle (2), and the mixing and stirring reaction kettle (2) is connected with a vent line (20), wherein the vent line (20) comprises a vent line main line and a vent line branch line.

[0098] The combustion unit comprises an incinerator (6), a secondary combustion chamber (5), a lance device (7), an air supply device (4), a secondary combustion chamber material line (17) and a nitrogen back flushing line (18).

[0099] Specifically, the low-temperature liquid nitrogen storage tank (1) is connected with the raw material tank (3) through the nitrogen line (11); the raw material tank (3) is connected with the liquid full plug line (8) of the mixing and stirring reaction kettle (2) through the raw material tank feeding line (16); the lance device (7) is connected with the liquid full plug line (8) of the mixing and stirring reaction kettle (2) through the secondary combustion chamber material line (17), and the nitrogen back flushing line (18) is connected with the secondary combustion chamber material line (17) and the nitrogen line (11) at two ends.

[0100] The nitrogen line (11) comprises a nitrogen main line (12) and a plurality of branch lines connected in parallel on the nitrogen main line (12), and the mixing and stirring reaction kettle (2), the raw material tank (3) and the raw material tank feeding line (16) are connected with the nitrogen main line (12) through the branch lines arranged in parallel.

[0101] The branch line comprises a first nitrogen branch line (13), a second nitrogen branch line (14) and a third nitrogen branch line (15); one end of the first nitrogen branch line (13) is connected with the nitrogen main line (12), and the other end is connected with the mixing and stirring reaction kettle (2); one end of the second nitrogen branch line (14) is connected with the nitrogen main line (12), and the other end is connected with the raw material tank feeding line (16); one end of the third nitrogen branch line (15) is connected with the nitrogen main line (12), and the other end is connected with the raw material tank (3).

[0102] ​The aluminum residue incineration treatment system further comprises a purging and venting unit, which comprises a nitrogen purging material line (19) and a nitrogen purging venting line (22); two ends of the nitrogen purging material line (19) are connected with the nitrogen main line (12) and the second combustion chamber material line (17) respectively; two ends of the nitrogen purging venting line (22) are connected with the nitrogen main line (12) and the venting line (20) respectively.

[0103] Valves are arranged on the nitrogen line (11), the raw material tank into the reactor material line (16), the venting line (20), the second combustion chamber material line (17), the nitrogen back flushing line (18), the nitrogen purging material line (19) and the nitrogen purging venting line (22) for adjusting the flow of nitrogen and material.

[0104] Specifically, in the feeding unit, a low-temperature liquid nitrogen storage tank pressure gauge (PG) and a glass plate liquid level gauge (LG) are installed on one side of the low-temperature liquid nitrogen storage tank (1); two ends of the nitrogen main line (12) are connected with the low-temperature liquid nitrogen storage tank (1) and the third nitrogen branch line (15) respectively.

[0105] In the direction away from the low-temperature liquid nitrogen storage tank (1), a vaporizer inlet valve (1#), a vaporizer (10), a vaporizer outlet regulating valve (2#), a nitrogen line total valve (3#) and a nitrogen line pressure gauge (PG2) are arranged on the nitrogen main line (12) in sequence; one end of the first nitrogen branch line (13) is connected with the nitrogen main line (12), and the other end is connected with the mixed stirring reaction kettle (2); in the direction close to the mixed stirring reaction kettle (2), a kettle inlet nitrogen electromagnetic valve (4#) and a reaction kettle nitrogen tank root valve (5#) are arranged on the first nitrogen branch line (13) in sequence; one end of the second nitrogen branch line (14) is connected with the nitrogen main line (13), and the other end is connected with the raw material tank into the reactor material line (16); in the direction close to the raw material tank into the reactor material line (16), a first nitrogen purging into the material line ball valve (9#) and a second nitrogen purging into the material line ball valve (10#) are arranged on the second nitrogen branch line (14) in sequence; one end of the third nitrogen branch line (15) is connected with the nitrogen main line (12), and the other end is connected with the raw material tank (3); in the direction close to the raw material tank (3), a nitrogen line ball valve (11#), a nitrogen hose connecting line ball valve (12#) and a raw material tank root nitrogen valve (28#) are arranged on the third nitrogen branch line (15) in sequence; a raw material tank pressure gauge (PG4) is installed between the nitrogen hose connecting line ball valve (12#) and the raw material tank root nitrogen valve (28#).

[0106] One end of the raw material tank into the reactor material line (16) is connected with the mixed stirring reaction kettle (2), and the other end is connected with the raw material tank (3); in the direction away from the raw material tank (3), a raw material tank tank root material valve (27#), a material hose connecting line ball valve (13#), a kettle material inlet electromagnetic valve (14#), a raw material tank into the reactor material line ball valve (15#) and a reaction kettle into the material line ball valve (16#) are arranged on the raw material tank into the reactor material line (16) in sequence.

[0107] Specifically, in the processing unit, the mixed stirring reaction kettle (2) is provided with a reaction kettle pressure gauge (PG1), a motor (M) and a liquid full plug wire (8) are arranged in the mixed stirring reaction kettle (2); one end of the vent line main line is connected with the mixed stirring reaction kettle (2), and the other end is directly connected with the ground; in the direction away from the mixed stirring reaction kettle (2), a reaction kettle safety valve front valve (26#) and a safety valve (35#) are arranged in sequence; the two ends of the vent line branch line are respectively connected with the vent line main line, and a reaction kettle vent cross line ball valve (25#) is arranged on the vent line branch line.

[0108] Specifically, in the combustion unit, the incinerator (6) and the second combustion chamber (5) are communicated, one side of the second combustion chamber (5) is connected with the lance device (7), one end of the air supply device (4) is connected with the lance device (7), the air supply device (4) and the lance device (7) are connected through an air supply pipeline, in the direction close to the lance device (4), a pressure regulating valve (29#), a control valve (30#) and a first check valve (31#) are arranged on the air supply pipeline in sequence; one end of the lance device (4) is connected with the second combustion chamber (5), and the other end is provided with a lance blockage observation opening and a lance blockage maintenance opening (21);

[0109] One end of the second combustion chamber material line (17) is connected with the liquid full plug wire (8) in the mixed stirring reaction kettle (2), and the other end is connected with the lance device (7); in the direction away from the raw material tank kettle material line (16), the second combustion chamber material line (17) is sequentially provided with a reaction kettle discharge line ball valve (17#), a second combustion chamber material electromagnetic valve (18#), a second combustion chamber material line total valve (19#), a first second combustion chamber lance feeding ball valve (20#), a second second combustion chamber lance feeding ball valve (21#), a second combustion chamber material inlet electromagnetic valve (22#) and a second check valve (32#); a second combustion chamber material line pressure gauge (PG3) is arranged at one end close to the second combustion chamber material line total valve (19#) between the second combustion chamber material electromagnetic valve (18#) and the second combustion chamber material line total valve (19#);

[0110] The nitrogen back flushing line (18) is connected with the nitrogen main line (12) and the second combustion chamber material line (17) in parallel; one end of the nitrogen back flushing line (18) is connected with the nitrogen main line (12) and is arranged close to the nitrogen line total valve (3#) between the vaporizer outlet pressure regulating valve (2#) and the nitrogen line total valve (3#); the other end of the nitrogen back flushing line (18) is arranged between the first second combustion chamber lance feeding ball valve (20#) and the second second combustion chamber lance feeding ball valve (21#); in the direction away from the nitrogen main line (12), a nitrogen back flushing line ball valve (24#) and a second combustion chamber nitrogen back flushing line ball valve (23#) are arranged on the nitrogen back flushing line (18) in sequence.

[0111] The nitrogen purging material line (19) is connected with the nitrogen main line (12) and the two combustion chamber material line (17) at two ends respectively, wherein one end of the nitrogen purging material line (19) is arranged between the nitrogen line total valve (3#) on the nitrogen main line and the tank inlet nitrogen electromagnetic valve (4#) on the first nitrogen branch line, and the other end of the nitrogen purging material line (19) is arranged between the reaction tank discharge line ball valve (17#) and the two combustion chamber material electromagnetic valve (18#); the first nitrogen purging material line ball valve (6#) and the second nitrogen purging material line ball valve (7#) are arranged on the nitrogen purging material line (19);

[0112] The aluminum residue incineration treatment system further comprises two nitrogen flappers, the first nitrogen flapper (33#) is arranged on the two combustion chamber material line (17) between the two combustion chamber material electromagnetic valve (18#) and the two combustion chamber material line pressure gauge (PG3);

[0113] The second nitrogen flapper (34#) is arranged on the nitrogen back flushing line (18) between the nitrogen back flushing line ball valve (24#) and the two combustion chamber nitrogen back flushing line ball valve (23#) and close to one end of the two combustion chamber nitrogen back flushing line ball valve (23#).

[0114] The nitrogen main line (12) and the vent line main line are connected through the nitrogen purging vent line (22), and the nitrogen purging vent line ball valve (8#) is arranged on the nitrogen purging vent line (22).

[0115] The diameters of the raw material tank inlet tank material line (16) and the valves arranged thereon, the two combustion chamber material line (17) and the valves arranged thereon, and the vent line (20) and the valves arranged thereon are equal, and are all DN50; the diameters of the nitrogen line (11) and the valves arranged thereon, the nitrogen back flushing line (18) and the valves arranged thereon, the nitrogen purging material line (19) and the valves arranged thereon, and the nitrogen purging vent line (22) and the valves arranged thereon are equal, and are all DN20.

[0116] The volume of the mixed stirring reaction tank 2 is 4m3, and the pressure bearing is 0.8MPa.

[0117] The refractoriness of the refractory material in the two combustion chambers and the incinerator is ≥2000℃.

[0118] The material of the spray gun is high-purity steel with a refractoriness ≥2000℃.

[0119] The volume of the raw material tank is 2m3, and the pressure bearing is 0.6MPa.

[0120] Example 2

[0121] The present embodiment provides an aluminum residue incineration treatment process method after producing triisobutyl aluminum, which is intended to treat the volume of 1.5m3 About 1 ton of aluminum residue is incinerated, and is treated by the incineration treatment system of Example 1, including the following steps:

[0122] S1: According to the maximum volume of the raw material tank, the on-site material is quantitatively stored in the raw material tank;

[0123] The maximum volume of the raw material tank is 2m 3 The volume of the material is 1.5m 3 , about 1t; in actual operation, after the on-site material is quantitatively stored in the raw material tank, the raw material tank is connected with the nitrogen line and the raw material tank inlet material line, and the raw material tank is connected to the incineration treatment system.

[0124] S2: The raw material tank is subjected to airtight detection, and after the airtightness is qualified, nitrogen is introduced into the raw material tank through the nitrogen line to sweep and stir the material in the raw material tank to fully mix the solid and liquid;

[0125] The actual operation is as follows: first, the vaporizer inlet valve (1#) and the vaporizer outlet regulating valve (2#) are opened, and the opening degree of the vaporizer inlet valve (1#) and the vaporizer outlet regulating valve (2#) is adjusted; the vaporizer inlet valve (1#) is fully opened, and the opening degree of the vaporizer outlet regulating valve (2#) is 30%, and the outlet pressure of the vaporizer (10) is maintained at 0.4-0.6MPa to provide high-purity pressure for the entire incineration treatment system.

[0126] Then the nitrogen line total valve (3#, fully open) is opened, and the nitrogen line pressure gauge (PG2) is observed; the PG2 value is displayed as 0.5MPa, indicating that the nitrogen system pressure is normal; the nitrogen line ball valve (11#), the nitrogen hose connection line ball valve (12#), the first nitrogen blowing inlet line ball valve (9#), the second nitrogen blowing inlet line ball valve (10#), the material hose connection line ball valve (13#), the kettle material inlet electromagnetic valve (14#), and the raw material tank kettle material inlet line ball valve (15#) (the opening degree of the above valves is fully open) are opened, and the airtightness of the two flange connections at the root of the raw material tank is detected (i.e. nitrogen is introduced into the nitrogen line, when the nitrogen line pressure gauge PG2 displays that the nitrogen line has been pressurized to 0.4MPa or more, the soap water is used for detection, and it is confirmed that there is no air bubble leakage, then the airtightness is qualified); after the airtightness is qualified, the raw material tank root material valve (27#) and the raw material tank root nitrogen valve (28#) are opened, nitrogen is introduced into the raw material tank (3) through the nitrogen line (11), and the material in the raw material tank (3) is swept and stirred to fully mix the solid and liquid; after the raw material tank (3) is pressurized to 0.4MPa, the first nitrogen blowing inlet line ball valve (9#) and the second nitrogen blowing inlet line ball valve (10#) are closed to prepare for pressurizing the mixed stirring reaction kettle (2).

[0127] S3: using the nitrogen pressure in the raw material tank, through the raw material tank into the kettle material line, the material in the raw material tank is all pressed into the mixed stirring reaction kettle, and the material in the reaction kettle is fully stirred by the motor;

[0128] In actual operation, open the reaction kettle empty cross line ball valve (25#), the reaction kettle feed line ball valve (16#), the valve opening is full open, and the material in the raw material tank (3) is pressed into the mixed stirring reaction kettle (2) by using the pressure (0.4-0.6MPa) in the raw material tank (3);

[0129] The sound of gas passing in the raw material tank inlet material line (16) indicates that the material in the raw material tank (3) has been completely pressed;

[0130] Continue to use the residual pressure in the raw material tank (3) to purge the raw material tank inlet material line (16), and blow the material into the mixed stirring reaction kettle (2) to ensure that there is no residual material in the raw material tank inlet material line (16). After the raw material tank inlet material line (16) is purged, close the raw material tank root material valve (27#), the material hose connection line ball valve (13#), the kettle material inlet electromagnetic valve (14#), the raw material tank inlet material line ball valve (15#), the reaction kettle feed line ball valve (16#) and the reaction kettle empty cross line ball valve (25#). The motor frequency is 37%, and the stirring time is 2h.

[0131] S4: ignite the fuel in the incinerator, and keep the fuel in the incinerator in a continuous combustion state;

[0132] S5: the material in the mixed stirring reaction kettle is stirred, nitrogen is introduced into the mixed stirring reaction kettle to pressurize, and after the pressure is charged to the specified pressure range, the pressure in the mixed stirring reaction kettle is kept in the specified range. Using the nitrogen pressure in the mixed stirring reaction kettle, continuously press the material in the mixed stirring reaction kettle into the spray gun device, the spray gun device sprays the material into the second combustion chamber, and the material is fully burned in the second combustion chamber and the incinerator;

[0133] Wherein, in actual operation, after stirring, open the tank into the nitrogen solenoid valve (4#, opening 40%) and the reaction kettle nitrogen tank root valve (5#, full open), nitrogen is imported into the mixed stirring reaction kettle (2) to charge pressure, after charging to 0.4MPa, open the reaction kettle discharge line ball valve (17#) set on the second combustion chamber material line (17), remove the second combustion chamber material electromagnetic valve (18#), the second combustion chamber material line total valve (19#), the first second combustion chamber lance feed ball valve (20#), the second second combustion chamber lance feed ball valve (21#), the second combustion chamber material inlet electromagnetic valve (22#), the second check valve (32#), wherein, the second combustion chamber material electromagnetic valve (18#) opening 50%, the second combustion chamber material inlet electromagnetic valve (22#) opening 22%, the rest of the valve opening is full; through the second combustion chamber material line (17) to the lance device (7) pressure feed material, the lance device (7) injects material into the second combustion chamber (5), the amount of feed is 50kg / h, the material is fully burned in the second combustion chamber (5) and the incinerator (6).

[0134] In the air supply device (4), the air supply device (4) is opened synchronously when the lance device (7) injects material into the second combustion chamber (5), through the precise adjustment of the control valve (30#), pressure regulating valve (29#) and first check valve (31#) of the air supply device (4) (control valve 30# opening 50%, pressure regulating valve 29# opening 30%, first check valve 31# full open), to ensure that the air provided by the air supply device (4) enters the lance device (7) after the volume ratio of the material in the lance device (7) is 1:3.

[0135] S6: the liquid level of the material in the mixed stirring reaction kettle is below the full plug line, and the material in the reaction kettle has been fully pressed into the lance and sprayed;

[0136] S7: after the material in the mixed stirring reaction kettle has been fully pressed into the lance and sprayed into the second combustion chamber and the incinerator for full combustion, the residual material in the lance device is blown into the second combustion chamber for combustion by nitrogen;

[0137] In actual operation, after the materials in the mixing and stirring reaction kettle (2) are all pressed into the lance device (7) and sprayed into the second combustion chamber (5) and the incinerator (6) for sufficient combustion, the first second combustion chamber lance feed ball valve (20#) on the second combustion chamber material line (17) is closed, at this time, the reaction kettle discharge line ball valve (17#), the second combustion chamber material removal solenoid valve (18#), and the second combustion chamber material line total valve (19#) are still in the fully open state; then the nitrogen back flushing line ball valve (24#, fully open), the second combustion chamber nitrogen back flushing line ball valve (23#, fully open), the first nitrogen purging material line ball valve (6#, fully open), the second nitrogen purging material line ball valve (7#, fully open), and the nitrogen purging vent line ball valve (8#, fully open) are opened; the materials in the lance metal hose are blown into the second combustion chamber (5) and the incinerator (6) by nitrogen for combustion until no materials are sprayed out of the lance device (7), then the second second combustion chamber lance feed ball valve (21#) and the second combustion chamber material inlet solenoid valve (22#) are closed.

[0138] S8: The mixing and stirring reaction kettle is depressurized to 0 MPa, the residual materials in the second combustion chamber material line are back-flushed into the mixing and stirring reaction kettle by nitrogen, and the system is closed after the purging is completed.

[0139] In actual operation, the reaction kettle vent line ball valve (25#, fully open) is opened, the mixing and stirring reaction kettle (2) is depressurized to 0 MPa, then the first second combustion chamber lance feed ball valve (20#, fully open) is opened, the residual materials in the second combustion chamber material line (17) are back-flushed into the mixing and stirring reaction kettle (2) by nitrogen to avoid residual materials in the second combustion chamber material line (17), and the reaction kettle discharge line ball valve (17#), the second combustion chamber material removal solenoid valve (18#), the second combustion chamber material line total valve (19#), and the first second combustion chamber lance feed ball valve (20#) provided on the second combustion chamber material line (17) are closed after the purging is completed, and the second combustion chamber nitrogen back flushing line ball valve (23#) and the nitrogen back flushing line ball valve (24#) provided on the nitrogen back flushing line (18) are closed.

[0140] The volume of the aluminum residue treated in this example is 1.5 m 3 , about 1 ton, and the treatment efficiency is 50 kg / h, taking about 20 h.

[0141] Example 3

[0142] This example intends to incinerate aluminum residue with a volume of 1.5 m 3 , about 1 ton, and the system used is the same as that in Example 2, and the process method is similar to that in Example 2.

[0143] The difference is that in the incineration treatment method of this example, in step S2, the opening degree of the vaporizer outlet regulating valve (2#) is 40%.

[0144] The volume of the aluminum residue treated in this example is 1.5 m3 about 1 ton, the processing efficiency is 40 kg / h, and the time is about 25 h.

[0145] Example 4

[0146] In this example, the volume of the aluminum residue to be incinerated is 1.5 m 3 about 1 ton, the processing efficiency is 40 kg / h, and the time is about 25 h.

[0147] The difference between this example and example 2 is that in the incineration process of this example, in step S3, the frequency conversion of the motor is 45%.

[0148] In this example, the volume of the aluminum residue to be incinerated is 1.5 m 3 about 1 ton, the processing efficiency is 40 kg / h, and the time is about 25 h.

[0149] Example 5

[0150] In this example, the volume of the aluminum residue to be incinerated is 1.5 m 3 about 1 ton, the processing efficiency is 40 kg / h, and the time is about 25 h.

[0151] The difference between this example and example 2 is that in the incineration process of this example, in step S5, the opening of the nitrogen inlet solenoid valve 4# is 50%, the opening of the material removal solenoid valve (18#) is 55%, and the opening of the material inlet solenoid valve (22#) of the second combustion chamber is 30%.

[0152] In this example, the volume of the aluminum residue to be incinerated is 1.5 m 3 about 1 ton, the processing efficiency is 40 kg / h, and the time is about 25 h.

[0153] Example 6

[0154] In this example, the volume of the aluminum residue to be incinerated is 1.5 m 3 about 1 ton, the processing efficiency is 40 kg / h, and the time is about 25 h.

[0155] The difference between this example and example 2 is that in the incineration process of this example, in step S6, the opening of the control valve 30# is 55%, the opening of the pressure regulating valve 29# is 35%, and the first one-way valve 31# is fully open, ensuring that the air provided by the air supply device (4) enters the lance device (7) at a volume ratio of 1:4 with the material in the lance device (7).

[0156] In this example, the volume of the aluminum residue to be incinerated is 1.5 m 3 about 1 ton, the processing efficiency is 40 kg / h, and the time is about 25 h.

[0157] Comparative Example 1

[0158] The comparative example processes the aluminum residue after production of triisobutyl aluminum by a cement kiln degradation method. The volume of the aluminum residue is 1.5 m3, about 1 ton.

[0159] The steps of processing the aluminum residue after production of triisobutyl aluminum by a cement kiln degradation method are as follows:

[0160] S1: Pretreatment of the aluminum residue

[0161] The aluminum residue after production of triisobutyl aluminum is collected into a raw material tank;

[0162] The aluminum residue in the raw material tank is pressed into a distillation kettle, and the volatile substances such as triisobutyl aluminum and n-hexane in the aluminum residue are gasified by heating, and then recovered by condensation, and the remaining solid residue is left in the distillation kettle;

[0163] During the distillation separation process of the aluminum residue, a large amount of heat is released when water is encountered, and water needs to be added slowly. The processing efficiency of distillation separation is about 5 kg / h;

[0164] S2: Mixing of the aluminum residue and cement raw materials

[0165] The aluminum residue after distillation purification is mixed with cement raw materials at a ratio of 1:10 to ensure that the mixed materials meet the chemical requirements of cement production;

[0166] S3: Adding the mixed materials to the cement kiln

[0167] The mixed materials are sent into the kiln tail decomposition furnace through the lifting facility, and the material addition amount is controlled at 0.8-1 t / h;

[0168] S4: Calcination of the cement kiln

[0169] In the cement kiln, the mixed materials are calcined at a high temperature of 1500℃; under the calcination conditions. The high temperature can decompose the organic matter and harmful components in the residue, and at the same time, the metal oxides such as aluminum in the residue participate in the formation process of the cement clinker;

[0170] The tail gas generated during the calcination process needs to be treated by purification. The tail gas treatment system of the cement kiln utilizes the high temperature environment to convert the reducing gases (NH3, H2, etc.) in the residue into harmless gases;

[0171] S5: Subsequent treatment

[0172] The calcined cement clinker is processed according to the normal cement production process, and finally the cement product is produced; the remaining valuable by-products (such as aluminum oxide, alkali metal salt, etc.) are recycled.

[0173] The cement kiln of the present comparative example degrades 1 ton of aluminum residue after production of triisobutyl aluminum. The triisobutyl aluminum and volatile substances such as n-hexane in the aluminum residue need to be separated as much as possible. During the distillation separation process, the aluminum residue will release a large amount of heat when it comes into contact with water, so water needs to be added slowly. The processing efficiency of distillation separation is about 5 kg / h; the mixed material is then added to the cement kiln for calcination, which takes about 2 h;

[0174] In summary, the present comparative example degrades 1 ton of aluminum residue after production of triisobutyl aluminum by a cement kiln, with a processing efficiency of about 5 kg / h and a time consumption of about 20-2 h, which is about 10 times that of Example 2.

[0175] Comparative Example 2

[0176] The present comparative example intends to incinerate about 1 ton of aluminum residue with a volume of 1.5 m 3 , using the same system as Example 2 and a similar process to Example 2.

[0177] The difference is that in the incineration method of the present comparative example, the opening degree of the vaporizer outlet regulating valve (2#) in step S2 is 10%.

[0178] During the treatment of aluminum residue in the present comparative example, the opening degree of the vaporizer outlet regulating valve (2#) does not meet the requirements of the present application, resulting in a low processing efficiency of 25 kg / h and a time consumption of about 40 h, which is 2 times that of Example 2.

[0179] Comparative Example 3

[0180] The present comparative example intends to incinerate about 1 ton of aluminum residue with a volume of 1.5 m 3 , using the same system as Example 2 and a similar process to Example 2.

[0181] The difference is that in the incineration method of the present comparative example, the motor frequency conversion in step S3 is 10%.

[0182] During the treatment of aluminum residue in the present comparative example, the motor frequency conversion does not meet the requirements of the present application, resulting in insufficient stirring of the material, and the processing efficiency of the present comparative example is 20 kg / h, which is 2.5 times that of Example 2.

[0183] Comparative Example 4

[0184] The present comparative example intends to incinerate about 1 ton of aluminum residue with a volume of 1.5 m 3 , using the same system as Example 2 and a similar process to Example 2.

[0185] The difference is that in the incineration treatment method of the embodiment, in step S5, the opening degree of the nitrogen inlet electromagnetic valve 4# is 10%, the opening degree of the two-burner material removal electromagnetic valve (18#) is 15%, and the opening degree of the two-burner material inlet electromagnetic valve (22#) is 10%.

[0186] In the process of treating the aluminum residue in the comparative example, the opening degree of the nitrogen inlet electromagnetic valve 4#, the opening degree of the two-burner material removal electromagnetic valve (18#), and the opening degree of the two-burner material inlet electromagnetic valve (22#) do not meet the requirements of the present application, which leads to that the material is prone to block the pipeline, the treatment efficiency is 20 kg / h, and the time is about 50 h, which is 2 times of that of example 2.

[0187] Comparative example 5

[0188] In the comparative example, about 1.5 m 3 of aluminum residue is treated by incineration, the system used is the same as that of example 2, and the process method is similar to that of example 2.

[0189] The difference is that in the incineration treatment method of the comparative example, in step S6, the opening degree of the control valve 30# is 15%, the opening degree of the pressure regulating valve 29# is 15%, and the first one-way valve 31# is fully open, so that the air provided by the air supply device (4) enters the lance device (7) at a volume ratio of 1:2 with the material in the lance device (7).

[0190] In the process of treating the aluminum residue in the comparative example, the opening degree of the control valve 30# is 15%, the opening degree of the pressure regulating valve 29# is 15%, and the first one-way valve 31# is fully open, so that the air provided by the air supply device (4) enters the lance device (7) at a volume ratio of 1:2 with the material in the lance device (7), which does not meet the requirements of the present application, leading to insufficient combustion of the material, and the treatment efficiency of the comparative example is 10 kg / h, and the time is about 100 h, which is 5 times of that of example 2.

[0191] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements within the technical range disclosed by the present application can be easily thought by those skilled in the art, which should be covered within the protection scope of the present application.

Claims

1. A system for incinerating aluminum residue after the production of triisobutylaluminum, characterized in that, It includes a feeding unit, a processing unit, and a combustion unit; The feeding unit includes a cryogenic liquid nitrogen storage tank (1), a raw material tank (3), a vaporizer (10), a nitrogen line (11), and a raw material tank feed line (16). The nitrogen line (11) includes a nitrogen main line (12), a first nitrogen branch line (13), a second nitrogen branch line (14), and a third nitrogen branch line (15). The processing unit includes a mixing and stirring reactor (2) and a vent line (20). The vent line (20) includes a main vent line and a branch vent line. The mixing and stirring reactor (2) is equipped with a motor (M) and a liquid plug-in cable (8). The combustion unit includes an incinerator (6), a secondary combustion chamber (5), a spray gun device (7), an air supply device (4), a secondary combustion chamber material line (17), and a nitrogen backflushing line (18); Valves are installed on the nitrogen line (11), the raw material tank feed line (16), the vent line (20), the secondary combustion chamber feed line (17), and the nitrogen backflush line (18) to regulate the flow of nitrogen and materials.

2. The aluminum residue incineration treatment system according to claim 1, characterized in that, The first nitrogen branch line (13), the second nitrogen branch line (14) and the third nitrogen branch line (15) are connected in parallel on the nitrogen main line (12); The two ends of the nitrogen main line (12) are respectively connected to the cryogenic liquid nitrogen storage tank (1) and the third nitrogen branch line (15); One end of the first nitrogen branch line (13) is connected to the nitrogen main line (12), and the other end is connected to the mixing and stirring reactor (2); The second nitrogen branch line (14) is connected to the nitrogen main line (12) at one end and to the raw material tank feed line (16) at the other end; The third nitrogen branch line (15) is connected to the nitrogen main line (12) at one end and to the raw material tank (3) at the other end.

3. The aluminum residue incineration treatment system according to claim 2, characterized in that, One end of the venting line is connected to the mixing and stirring reactor (2), and the other end is directly connected to the ground.

4. The aluminum residue incineration treatment system according to claim 3, characterized in that, The incinerator (6) and the secondary combustion chamber (5) are connected from bottom to top; The secondary combustion chamber (5) is connected to a spray gun device (7) on one side, and the air supply device (4) and the spray gun device (7) are connected by an air supply pipeline; One end of the material line (17) in the second combustion chamber is connected to the liquid power line (8) in the mixing and stirring reactor (2), and the other end is connected to the spray gun device (7); One end of the nitrogen backflush line (18) is connected to the nitrogen main line (12), and the other end is connected to the secondary combustion chamber material line (17).

5. The aluminum residue incineration treatment system according to claim 4, characterized in that, The aluminum residue incineration treatment system also includes a purging and venting unit, which includes a nitrogen purging material line (19), a nitrogen purging and venting line (22), a first nitrogen blower (33#), and a second nitrogen blower (34#).

6. The aluminum residue incineration treatment system according to claim 5, characterized in that, The two ends of the nitrogen purging material line (19) are connected to the nitrogen main line (12) and the secondary combustion chamber material line (17), respectively. The nitrogen main line (12) and the venting main line are connected by a nitrogen purging venting line (22).

7. The aluminum residue incineration treatment system according to claim 6, characterized in that, The diameters of the raw material tank inlet material line (16) and the valves thereon, the secondary combustion chamber material line (17) and the valves thereon, and the vent line (20) and the valves thereon are all equal and all ≥DN50. The diameters of the nitrogen line (11) and the valves thereon, the nitrogen backflush line (18) and the valves thereon, the nitrogen purging material line (19) and the valves thereon, and the nitrogen purging vent line (22) and the valves thereon are all equal and ≥DN20, and are smaller than the diameters of the raw material tank inlet material line (16) and the secondary combustion chamber material line (17).

8. The aluminum residue incineration treatment system according to claim 7, characterized in that, The mixing and stirring reactor has a volume ≥4m³. 3 Pressure resistance ≥ 0.8 MPa; The raw material tank volume is ≥2m³ 3 Pressure resistance ≥0.6Mpa.

9. The aluminum residue incineration treatment system according to claim 8, characterized in that, Along the direction away from the cryogenic liquid nitrogen storage tank (1), the nitrogen main line (12) is sequentially equipped with a vaporizer inlet valve (1#), a vaporizer (10), a vaporizer outlet regulating valve (2#), a nitrogen line main valve (3#), and a nitrogen line pressure gauge (PG2); Along the direction close to the mixing and stirring reactor (2), the first nitrogen branch line (13) is sequentially equipped with a reactor inlet nitrogen solenoid valve (4#) and a reactor nitrogen tank root valve (5#); Along the direction close to the material line (16) of the raw material tank, a first nitrogen purging feed line ball valve (9#) and a second nitrogen purging feed line ball valve (10#) are sequentially installed on the second nitrogen branch line (14); Along the direction close to the raw material tank (3), a nitrogen line ball valve (11#), a nitrogen hose connection line ball valve (12#), and a raw material tank root nitrogen valve (28#) are sequentially installed on the third nitrogen branch line (15). A raw material tank pressure gauge (PG4) is installed between the nitrogen hose connection line ball valve (12#) and the raw material tank root nitrogen valve (28#).

10. A process for incinerating aluminum residue after the production of triisobutylaluminum, implemented by the aluminum residue incineration system described in any one of claims 1-9.

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