Chlorinated paraffin preparation system

Abstract

The chlorinated paraffin preparation system comprises a feeding mechanism, a reaction mechanism and a tail gas treatment mechanism, the reaction mechanism comprises a plurality of main reaction structures connected in series and a plurality of auxiliary reaction structures connected in series, the main reaction mechanism comprises a main reaction kettle, the main reaction kettle is provided with four ultraviolet lamp tubes, and the auxiliary reaction structure comprises an auxiliary reaction kettle. The main reaction kettle is internally provided with four special ultraviolet lamp tubes with the wavelength of 254nm, the auxiliary reaction kettle is internally provided with fluorescent lamp tubes, the feeding mechanism is used for inputting chlorine into the main reaction kettle and inputting liquefied paraffin into the auxiliary reaction kettle, and the tail gas treatment mechanism is used for treating tail gas generated by the reaction mechanisms. The reaction effect of chlorine and paraffin is optimal, and four common 6500k fluorescent tubes are arranged in the side reaction kettle, so that the single-line productivity is increased, the chlorine content of the product is more stable, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to a chlorinated paraffin preparation system. Background Art

[0002] There are two production processes for chlorinated paraffin products in my country - intermittent chlorination and continuous chlorination. According to the chlorination method, there are thermal chlorination, photochlorination and catalytic chlorination. This project adopts a continuous kettle chlorination process scheme that combines mature photochlorination and thermal chlorination. The photochlorination production reaction temperature is low, the reaction time is short, the consumption of chlorine gas and liquid wax is lower than that of thermal chlorination, and the product quality is stable and the color is light. However, the quality of photochlorination products is unstable, and the output and quality are insufficient due to the limitation of light conditions in the existing technology. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the above prior art and provide a chlorinated paraffin preparation system.

[0004] A chlorinated paraffin preparation system comprises a feeding mechanism, a reaction mechanism and an exhaust gas treatment mechanism, wherein the reaction mechanism comprises a plurality of main reaction mechanisms connected in series and a plurality of auxiliary reaction mechanisms connected in series, wherein the main reaction mechanism comprises a main reaction kettle provided with four ultraviolet lamp tubes, and the auxiliary reaction mechanism comprises an auxiliary reaction kettle provided with a fluorescent lamp tube, wherein the feeding mechanism is used for inputting chlorine gas into the main reaction mechanism and inputting liquefied paraffin into the auxiliary reaction mechanism, and the exhaust gas treatment mechanism is used for processing the exhaust gas generated by the reaction mechanism, and the wavelength of the ultraviolet lamp tube is 254nm.

[0005] In order to prevent the reactor from overheating, the main reactor is connected to the main circulation pump and the main cooler. The liquid in the main reactor flows out from the lower end to the main circulation pump, and the main circulation pump transports the liquid back to the main reactor after passing through the main cooler.

[0006] In order to prevent tail gas pollution, the tail gas treatment mechanism includes a membrane absorption tower and a hydrochloric acid absorption tower. The hydrochloric acid absorption tower is connected to the membrane absorption tower and the hydrochloric acid storage tank. The membrane absorption tower is connected to the side reaction mechanism. The excess chlorine after the reaction of the main reaction mechanism is transported to the side reaction mechanism, and the tail gas generated in the side reaction mechanism is transported to the membrane absorption tower.

[0007] In order to achieve the best reaction control, the specification of fluorescent tube is 6500k.

[0008] In order to ensure the stability of the feeding process, the feeding mechanism includes a liquid chlorine storage tank, a vaporizer, and a wax oil storage tank. The chlorine in the liquid chlorine storage tank is vaporized by the vaporizer and then enters the microchannel reactor, and the liquefied paraffin in the wax oil storage tank enters the microchannel reactor through a paraffin pump.

[0009] Beneficial effects: In the traditional process, seven-stage main kettle and two-stage auxiliary kettle are connected in series, and four 6500K fluorescent tubes are inserted into the main kettle as photocatalytic conditions with a wavelength range of 450-465nm. The auxiliary kettle is considered to utilize waste heat and wax oil reaction without inserting lamps; while the utility model arranges 4 special ultraviolet lamps with a wavelength of 254nm in the main reactor. In this wavelength range, the reaction effect of chlorine and paraffin is best, and 4 ordinary 6500k fluorescent tubes are arranged in the auxiliary reactor. In this way, the single-line production capacity can be increased, the chlorine content of the product is more stable, and the product quality can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of a system for preparing chlorinated paraffin;

[0011] In the figure, 1. liquid chlorine storage tank, 2. vaporizer, 3. secondary reactor, 4. main reactor, 5. membrane absorption tower, 6. hydrochloric acid absorption tower, 7. hydrochloric acid storage tank, 8. wax oil storage tank. DETAILED DESCRIPTION

[0012] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0013] like Figure 1 As shown, liquid chlorine storage tank 1, vaporizer 2, secondary reactor 3, main reactor 4, membrane absorption tower 5, hydrochloric acid absorption tower 6, hydrochloric acid storage tank 7, wax oil storage tank 8;

[0014] A chlorinated paraffin preparation system comprises a feeding mechanism, a reaction mechanism and an exhaust gas treatment mechanism. The reaction mechanism comprises seven main reaction mechanisms connected in series and two auxiliary reaction mechanisms connected in series. The main reaction mechanism comprises a main reaction kettle 4 provided with four ultraviolet lamp tubes. The auxiliary reaction mechanism comprises an auxiliary reaction kettle 3 provided with a fluorescent lamp tube. The feeding mechanism is used to input chlorine gas into the main reaction mechanism and input liquefied paraffin into the auxiliary reaction mechanism. The exhaust gas treatment mechanism is used to treat the exhaust gas generated by the reaction mechanism.

[0015] In this embodiment, the wavelength of the ultraviolet lamp is 254 nm.

[0016] In this embodiment, the main reactor 4 is connected to the main circulation pump and the main cooler. The liquid in the main reactor 4 flows out from the lower end to the main circulation pump, and the main circulation pump transports the liquid back to the main reactor 4 after passing through the main cooler.

[0017] In this embodiment, the tail gas treatment mechanism includes a membrane absorption tower 5 and a hydrochloric acid absorption tower 6. The hydrochloric acid absorption tower 6 is connected to the membrane absorption tower 5 and the hydrochloric acid storage tank 7. The membrane absorption tower 5 is connected to the side reaction mechanism. The excess chlorine after the reaction of the main reaction mechanism is transported to the side reaction mechanism, and the tail gas generated in the side reaction mechanism is transported to the membrane absorption tower 5.

[0018] In this embodiment, the specification of the fluorescent tube is 6500k.

[0019] In this embodiment, the feeding mechanism includes a liquid chlorine storage tank 1, a vaporizer 2, and a wax oil storage tank 8. The chlorine gas in the liquid chlorine storage tank 1 is vaporized by the vaporizer 2 and then enters the microchannel reactor, and the liquefied paraffin in the wax oil storage tank 8 enters the microchannel reactor through a paraffin pump.

[0020] When using the chlorinated paraffin preparation system, the liquefied chlorine in the liquid chlorine storage tank 1 is firstly vaporized by the vaporizer 2 and enters the main reactor 4 in sequence, the wax oil storage tank 8 enters the sub-reactor 3 through the paraffin pump, the liquefied paraffin enters the main reactor 4 from the sub-reactor 3 to react with the chlorine to produce chlorinated paraffin, the waste gas and excess chlorine generated in the main reactor 4 during the reaction enter the sub-reactor 3, wherein the chlorine reacts with the paraffin, and at this time, a mixed liquid of paraffin and chlorinated paraffin exists in the sub-reactor 3, the waste gas in the sub-reactor 3 enters the membrane absorption tower 5, then enters the hydrochloric acid absorption tower 6, and finally enters the hydrochloric acid storage tank 7.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A chlorinated paraffin preparation system, characterized in that: It includes a feeding mechanism, a reaction mechanism and an exhaust gas treatment mechanism. The reaction mechanism includes a plurality of main reaction mechanisms connected in series and a plurality of side reaction mechanisms connected in series. The main reaction mechanism includes a main reaction kettle, and the main reaction kettle is provided with four ultraviolet lamp tubes. The side reaction mechanism includes a side reaction kettle, and the side reaction kettle is provided with a fluorescent lamp tube. The feeding mechanism is used to input chlorine gas into the main reaction mechanism and liquefied paraffin into the side reaction mechanism. The exhaust gas treatment mechanism is used to treat the exhaust gas generated by the reaction mechanism.

2. A chlorinated paraffin preparation system according to claim 1, characterized in that: The wavelength of the ultraviolet lamp is 254nm.

3. A chlorinated paraffin preparation system according to claim 1, characterized in that: The main reactor is connected to a main circulation pump and a main cooler. The liquid in the main reactor flows out from the lower end to the main circulation pump. The main circulation pump transports the liquid back to the main reactor after passing through the main cooler.

4. A chlorinated paraffin preparation system according to claim 1, characterized in that: The tail gas treatment mechanism includes a membrane absorption tower and a hydrochloric acid absorption tower. The hydrochloric acid absorption tower is connected to the membrane absorption tower and the hydrochloric acid storage tank. The membrane absorption tower is connected to the side reaction mechanism. The excess chlorine after the reaction of the main reaction mechanism is transported to the side reaction mechanism, and the tail gas generated in the side reaction mechanism is transported to the membrane absorption tower.

5. A chlorinated paraffin preparation system according to claim 1, characterized in that: The specification of the fluorescent tube is 6500k.

6. A chlorinated paraffin preparation system according to claim 1, characterized in that: The feeding mechanism comprises a liquid chlorine storage tank, a vaporizer, and a wax oil storage tank. The chlorine in the liquid chlorine storage tank is vaporized by the vaporizer and then enters the microchannel reactor. The liquefied paraffin in the wax oil storage tank enters the microchannel reactor through a paraffin pump.

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