Post-treatment device for 2-ethyl anthraquinone production

Abstract

The utility model belongs to the technical field of chemical equipment, and discloses a post-treatment device for 2-ethyl anthraquinone production, which comprises a reaction kettle provided with a jacket and a stirring device, and a feed port of the reaction kettle is communicated to an extract liquor storage tank and an alkaline solution storage tank respectively through a pipeline, a metering pump and a regulating valve; a discharge port of the reaction kettle is communicated with feed ports of a water phase tank and an organic phase tank through pipelines, a metering pump and a regulating valve respectively, and the feed port of the organic phase tank is also communicated with a washing water storage tank; a discharge port of the organic phase tank is respectively communicated with feed ports of the wastewater tank and the desolventizing kettle through a pipeline, a metering pump and a regulating valve; and the metering pump and the regulating valve are electrically connected to an automatic control system. The equipment is simple, the treatment effect is good, a refined product can be directly obtained, and the product quality is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and particularly relates to a post-treatment device for the production of 2-ethylanthraquinone. Background Art

[0002] As an important fine chemical raw material, 2-ethylanthraquinone is widely used in different fields, so the demand is increasing, and the production requirements for it are also getting higher and higher. The appearance requirements for qualified 2-ethylanthraquinone products are orange-red to chestnut-brown lumps or powders, and the appearance of first-class and premium products is light yellow flakes or powders; currently, in the industry, the light yellow 2-ethylanthraquinone product is usually obtained by refining the crude 2-ethylanthraquinone. The refining process generally includes multiple processes such as distillation, rectification, condensation, buffering, and vacuum. This process is complex, and there are also problems such as high requirements for equipment and high failure rates. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a post-treatment device for the production of 2-ethylanthraquinone, which overcomes the defects of the prior art, has simple equipment, good treatment effect, can directly obtain refined products, and has good product quality.

[0004] To solve the above technical problem, the technical solution of the utility model is as follows:

[0005] A post-treatment device for the production of 2-ethylanthraquinone includes a reaction kettle provided with a jacket and a stirring device. The feed inlet of the reaction kettle is respectively connected to an extraction liquid storage tank and an alkali solution storage tank through pipelines, metering pumps, and regulating valves; the discharge outlet of the reaction kettle is respectively connected to the feed inlets of an aqueous phase tank and an organic phase tank through pipelines, metering pumps, and regulating valves. The feed inlet of the organic phase tank is also connected to a washing water storage tank; the discharge outlet of the organic phase tank is respectively connected to the feed inlets of a waste water tank and a stripping kettle through pipelines, metering pumps, and regulating valves; the metering pumps and regulating valves are both electrically connected to an automatic control system.

[0006] Preferably, the jacket is a temperature control jacket. The temperature control medium in the jacket is water. The water inlet and outlet of the jacket are respectively connected to a water supply device and a water collection device through pipelines.

[0007] Preferably, the feed inlet of the extraction liquid storage tank is connected to the 2-ethylanthraquinone extraction kettle of the previous process through pipelines, metering pumps, and regulating valves.

[0008] Preferably, the alkali solution storage tank is provided with a stirring device, a solid material inlet, and a liquid material inlet; the liquid material inlet is connected to a solvent storage tank through pipelines, metering pumps, and regulating valves, and the solid material inlet is used for feeding potassium hydroxide and thiourea dioxide.

[0009] Preferably, the organic phase tank is provided with a stirring device.

[0010] Preferably, the stripping kettle is provided with a finished product outlet and a steam outlet. The finished product outlet is communicated with a finished product storage tank, and the steam outlet is communicated with a solvent recovery and utilization device through a pipeline.

[0011] Preferably, the automatic control system is a DCS automatic control system.

[0012] Due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0013] The present utility model removes impurities (mainly sulfuric acid and a small amount of closed-loop by-products) in the 2-ethylanthraquinone extraction solution prepared by using potassium hydroxide and thiourea dioxide, avoiding the complex production process of first preparing a crude product and then refining the crude product. The obtained product has a light yellow color, pure color, and low impurity content. Moreover, the process is simple, requires fewer equipment, has low requirements for equipment, so the equipment failure rate is low, the shutdown and maintenance time caused by failures is reduced, and the production efficiency is improved.

[0014] In summary, the equipment of the present utility model is simple, has good treatment effects, can directly obtain refined products, and the product quality is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0017] Wherein, 1, reaction kettle; 2, extraction solution storage tank; 3, alkali solution storage tank; 4, aqueous phase tank; 5, organic phase tank; 6, washing water storage tank; 7, wastewater tank; 8, stripping kettle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be further elaborated below in conjunction with the drawings and embodiments.

[0019] As Figure 1 shown, the present utility model is a post-treatment device for the production of 2-ethylanthraquinone, including a reaction kettle 1 provided with a jacket (not marked) and a stirring device (not marked). The feed ports of the reaction kettle 1 are respectively communicated with an extraction solution storage tank 2 and an alkali solution storage tank 3 through pipelines (not marked), metering pumps (not marked), and regulating valves (not marked); the discharge port of the reaction kettle 1 is respectively communicated with the feed ports of an aqueous phase tank 4 and an organic phase tank 5 through pipelines, metering pumps, and regulating valves. The feed port of the organic phase tank 5 is also communicated with a washing water storage tank 6; the discharge port of the organic phase tank 5 is respectively communicated with the feed ports of a wastewater tank 7 and a stripping kettle 8 through pipelines, metering pumps, and regulating valves; the metering pumps and regulating valves are both electrically connected to an automatic control system (not marked).

[0020] In actual production, first prepare an alkali solution for impurity removal. Add appropriate amounts of water, potassium hydroxide, and thiourea dioxide to the alkali solution storage tank 3 to prepare an aqueous alkali solution containing 2% potassium hydroxide and 1‰ thiourea dioxide by weight percentage. Then, transfer this solution to the reaction kettle 1 in proportion and mix it with the 2-ethylanthraquinone extraction solution obtained from the previous process. Control the reaction temperature at 60°C and react for 10 minutes under stirring at a speed of 400 rpm. Then, naturally cool down to 30°C, stop stirring, and after standing and separating, separately transfer the aqueous phase and the organic phase to the aqueous phase tank 4 and the organic phase tank 5. Add a certain amount of washing water to the organic phase tank 5 for washing, separate the washing water and transfer it to the wastewater tank 7, and transfer the washed organic phase to the stripping kettle 8 to remove the solvent to obtain the finished light yellow 2-ethylanthraquinone product.

[0021] It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A post-processing device for the production of 2-ethylanthraquinone, characterized in that: It comprises a reactor provided with a jacket and a stirring device, wherein the feed port of the reactor is connected to an extract storage tank and an alkaline solution storage tank through pipelines, a metering pump and a regulating valve respectively; the discharge port of the reactor is connected to the feed ports of a water phase tank and an organic phase tank through pipelines, a metering pump and a regulating valve respectively, and the feed port of the organic phase tank is also connected to a washing water storage tank; the discharge port of the organic phase tank is connected to the feed ports of a waste water tank and a desolventizing kettle through pipelines, a metering pump and a regulating valve respectively; the metering pump and the regulating valve are both electrically connected to an automatic control system.

2. The post-processing device for producing 2-ethylanthraquinone according to claim 1, characterized in that: The jacket is a temperature-controlled jacket.

3. The post-processing device for producing 2-ethylanthraquinone according to claim 1, characterized in that: The feed port of the extract storage tank is connected to the 2-ethylanthraquinone extraction kettle of the previous process through a pipeline, a metering pump and a regulating valve.

4. The post-processing device for producing 2-ethylanthraquinone according to claim 1, characterized in that: The alkaline solution storage tank is provided with a stirring device, a solid material inlet and a liquid material inlet.

5. The post-processing device for producing 2-ethylanthraquinone according to claim 1, characterized in that: The organic phase tank is provided with a stirring device.

6. The post-processing device for producing 2-ethylanthraquinone according to claim 1, characterized in that: The desolventizing kettle is provided with a finished product outlet and a steam outlet. The finished product outlet is connected to the finished product storage tank, and the steam outlet is connected to the solvent recovery and utilization device through a pipeline.

7. The post-processing device for producing 2-ethylanthraquinone according to claim 1, characterized in that: The automatic control system is a DCS automatic control system.

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