Waste aluminum oxide regeneration waste gas treatment system

Abstract

The utility model discloses a waste aluminum oxide regeneration waste gas treatment system, which belongs to the technical field of waste aluminum oxide regeneration in hydrogen peroxide production, and comprises a cooler, a solvent tank, an electrical tar precipitator and a molecular sieve adsorption bed, the cooler comprises a cooling water inlet, a cooling water outlet, a waste gas inlet and a waste gas outlet, the waste gas outlet is communicated with the electrical tar precipitator, and the solvent tank is communicated with the molecular sieve adsorption bed. The electrical tar precipitator is communicated with the molecular sieve adsorption bed through a pipeline, the cooler and the electrical tar precipitator are both provided with organic matter discharge ports, and the organic matter discharge ports are connected with a solvent tank. According to the application, a multi-stage treatment process is adopted, and comprises cooling, electric capture and adsorption links, so that organic matters, tar and acid gas in the waste gas can be efficiently removed, and the waste gas treatment efficiency is remarkably improved; by arranging the organic matter discharge port, organic matters in the waste gas are condensed and recovered to the solvent tank, so that cyclic utilization of resources is realized, waste of raw materials is reduced, and the economic value is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste aluminum oxide adsorbent regeneration in hydrogen peroxide production, and particularly relates to a waste aluminum oxide regeneration waste gas treatment system. Background Art

[0002] During the hydrogen peroxide production process, as the working fluid continues to run in the system, impurities such as anthraquinone degradation products continue to accumulate. These degradation products not only prevent the formation of hydrogen peroxide, but also affect the speed and extent of the hydrogenation and oxidation reactions. In industrial production, activated alumina is used to adsorb these anthraquinone degradation products and convert them into effective anthraquinone. However, with extended use, the activity of this alumina gradually decreases until it can no longer meet production requirements and must be replaced. However, the regeneration process of spent alumina produces waste gas containing pollutants such as anthraquinone, trioctyl phosphate, and heavy aromatics. If discharged directly without treatment, these waste gases will cause serious environmental pollution and waste substances such as anthraquinone, trioctyl phosphate, and heavy aromatics.

[0003] Traditional waste gas treatment systems for spent alumina regeneration often rely on single physical or chemical methods, such as activated carbon adsorption and spray absorption. These methods suffer from low treatment efficiency, secondary pollution, and high operating costs. Especially for waste gas containing high concentrations of organic matter and tar, traditional methods often struggle to achieve ideal treatment results, and the equipment is prone to clogging and difficult to maintain.

[0004] In order to reduce environmental pollution, improve resource utilization and take the path of sustainable development, there is an urgent need for a new type of treatment system that can efficiently treat waste alumina regeneration waste gas, reduce operating costs and facilitate maintenance. Summary of the Invention

[0005] In order to solve the above-mentioned problems, the utility model discloses a waste alumina regeneration waste gas treatment system, which provides a waste alumina regeneration waste gas treatment system with optimized structure, simple operation and low maintenance cost. Through innovative technical solutions, it effectively solves the problems of low waste gas treatment efficiency and easy clogging of equipment, and has significant practical application value.

[0006] To achieve the above objectives, the specific technical solutions of this application are as follows:

[0007] A waste alumina regeneration waste gas treatment system includes a cooler, a solvent tank, an electric tar collector and a molecular sieve adsorption bed. The cooler includes a cooling water inlet, a cooling water outlet, a waste gas inlet and a waste gas outlet. The waste gas outlet is connected to the electric tar collector, and the electric tar collector pipeline is connected to the molecular sieve adsorption bed.

[0008] Based on the above technical features, further, the cooler and the electric tar collector are both provided with an organic matter discharge port, and the organic matter discharge port is connected to the solvent tank.

[0009] Based on the above technical features, preferably, two or more coolers are arranged in parallel.

[0010] Based on the above technical features, the waste alumina regeneration waste gas treatment system further includes a steam cleaning system, which includes a steam generator, a cleaning pipe, a nozzle and a steam control system for regularly cleaning the cooler and the electric tar collector.

[0011] Based on the above technical features, further, the electric tar collector includes a high-voltage electric field generating device for improving the efficiency of capturing oil-containing gas.

[0012] Based on the above technical features, preferably, the molecular sieve adsorption bed adopts granular zeolite molecular sieve.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This application adopts a multi-stage treatment process, including cooling, electrostatic capture and adsorption, to recover recyclable organic matter in the exhaust gas and adsorb unrecyclable organic matter;

[0015] By setting up an organic matter discharge port, the organic matter in the exhaust gas is condensed and recovered into the solvent tank, thus realizing the recycling of resources, reducing the waste of raw materials and improving economic value;

[0016] By setting up multiple coolers in parallel, the system's processing capacity and stability are improved in a useful and redundant manner. Even if a single device fails, it will not affect the operation of the entire system.

[0017] Through the high-voltage electric field generating device, the oil-containing organic matter in the condensed non-condensable gas can be automatically adjusted and removed according to the actual operating conditions, realizing the automation and intelligentization of operation and reducing manual intervention;

[0018] Regular steam cleaning of the system can effectively reduce equipment coking and carbon deposition, extend equipment life, and reduce maintenance costs and operational risks.

[0019] The adsorption saturated granular zeolite molecular sieve is replaced and then regenerated by the waste alumina ball regeneration system to achieve recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the process of a waste alumina regeneration waste gas treatment system of the utility model;

[0021] List of Figure Symbols:

[0022] 1. Cooler; 101. Cooling water inlet; 102. Cooling water outlet; 103. Waste gas inlet; 104. Waste gas outlet; 2. Solvent tank; 3. Electric tar collector; 4. Molecular sieve adsorption bed; 5. Steam cleaning system; 6. Organic matter discharge port. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0024] It should be noted that the terms "upper," "lower," "left," "right," "front," and "rear" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a particular component, respectively. Furthermore, the terms "mounted," "connected," and "connected" should be interpreted broadly, meaning, for example, fixed, removable, or integral; mechanical or electrical; direct or indirect through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model on a case-by-case basis.

[0025] like Figure 1 As shown, a waste alumina regeneration waste gas treatment system includes a cooler 1, a solvent tank 2, an electric tar collector 3, and a molecular sieve adsorption bed 4. The cooler 1 includes a cooling water inlet 101, a cooling water outlet 102, an exhaust gas inlet 103, and an exhaust gas outlet 104. The exhaust gas outlet 104 is connected to the electric tar collector 3, and the electric tar collector 3 is connected to the molecular sieve adsorption bed 4 through a pipeline.

[0026] The cooler and the electric tar collector 3 are both provided with an organic matter discharge port 6 , and the organic matter discharge port is connected to a solvent tank.

[0027] The coolers 1 are arranged in parallel with two or more coolers. By arranging multiple coolers in parallel, the processing capacity and stability of the system are improved. Even if a single device fails, the operation of the entire system is not affected.

[0028] The waste alumina regeneration waste gas treatment system further comprises a steam cleaning system 5, which comprises a steam generator, a cleaning pipeline, a nozzle and a steam control system, and is used for regularly cleaning the cooler and the electric tar collector.

[0029] The electric tar collector 3 includes a high-voltage electric field generating device for improving the efficiency of capturing oil-containing gas.

[0030] The molecular sieve adsorption bed 4 uses granular zeolite molecular sieve, and after adsorption saturation, the granular zeolite molecular sieve can be regenerated and recycled using a waste alumina regeneration system.

[0031] Specific workflow:

[0032] The waste gas first enters the cooler, where the cooling water lowers the waste gas temperature, condenses the organic matter into liquid, and collects it into the solvent tank through the organic matter discharge port.

[0033] The condensed exhaust gas enters the electric tar collector, and the electric field generated by the high-voltage electric field generating device captures the tar particles in the exhaust gas.

[0034] The waste gas treated by the electric tar collector then enters the molecular sieve adsorption bed, and the active molecular sieve adsorbs harmful substances in the waste gas.

[0035] The steam cleaning system is started regularly to clean the cooler and electric tar collector through the steam generated by the steam generator through the cleaning pipes and nozzles to remove coking and carbon deposits.

[0036] After cleaning, the system resumes normal operation and continues to carry out waste gas treatment work.

[0037] In summary, the working principle of this utility model is based on the combination of physical adsorption and electric field capture, achieving efficient exhaust gas purification through cooling, condensation, electric capture, and adsorption. The workflow includes exhaust gas pretreatment, organic matter recovery, tar electric capture, adsorption of harmful substances, and regular equipment cleaning and maintenance, forming a closed-loop exhaust gas treatment system.

[0038] It should be noted that the drawings only illustrate the technical ideas of the present invention and cannot limit the scope of protection of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications all fall within the scope of protection of the claims of the present invention.

Claims

1. A waste alumina regeneration waste gas treatment system, characterized by: It includes a cooler, a solvent tank, an electric tar collector and a molecular sieve adsorption bed. The cooler includes a cooling water inlet, a cooling water outlet, a waste gas inlet and a waste gas outlet. The waste gas outlet is connected to the electric tar collector, and the electric tar collector pipeline is connected to the molecular sieve adsorption bed.

2. A waste alumina regeneration waste gas treatment system according to claim 1, characterized in that: The cooler and the electric tar collector are both provided with an organic matter discharge port, and the organic matter discharge port is connected to the solvent tank.

3. The waste alumina regeneration waste gas treatment system according to claim 1, characterized in that: Two or more coolers are arranged in parallel.

4. The waste alumina regeneration waste gas treatment system according to claim 1, characterized in that: The waste alumina regeneration waste gas treatment system also includes a steam cleaning system for regularly cleaning the cooler and the electric tar collector.

5. The waste alumina regeneration waste gas treatment system according to claim 1, characterized in that: The electric tar collector includes a high-voltage electric field generating device for improving the efficiency of capturing oil-containing gas.

6. The waste alumina regeneration waste gas treatment system according to claim 1, characterized in that: The molecular sieve adsorption bed adopts granular zeolite molecular sieve.

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