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AG-01 catalyst used for synthesis of dichloropropanol by hydrochlorination of glycerin

A technology of AG-01 and dichloropropanol, which is applied in the field of catalysts for synthesizing dichloropropanol by glycerol hydrochlorination, can solve the problems of fast catalyst reaction rate, high utilization rate of hydrogen chloride, and low amount of catalyst, and achieves the utilization of hydrogen chloride. The effect of high rate, low catalyst dosage and high selectivity

Active Publication Date: 2013-12-25
河北珈奥甘油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The novel catalyst of the present invention has the advantages of fast reaction rate, high utilization rate of hydrogen chloride, high product yield, less catalyst consumption and suitable for large-scale industrial production, etc.

Method used

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  • AG-01 catalyst used for synthesis of dichloropropanol by hydrochlorination of glycerin
  • AG-01 catalyst used for synthesis of dichloropropanol by hydrochlorination of glycerin
  • AG-01 catalyst used for synthesis of dichloropropanol by hydrochlorination of glycerin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of AG-01 catalyst:

[0034] Weigh SnCl 2 2H 2 O (quality standard: GB / T2526-93) and CuCl (quality standard: GB / T27562-2011), with SnCl 2 2H 2 The mass ratio of O to CuCl is 7 to 3 and mixed evenly to obtain AG-01 catalyst, which is ready for use.

[0035] (1) Synthesis of dichloropropanol by chlorination of glycerin:

[0036] Such as figure 1 As shown, it is a 3-stage chlorination reactor series process, in which the first to third tower chlorination reactors (T102 to T104) are packed towers. Tail gas absorption tower (T101), dichloropropanol (DCP) rectification tower (T105).

[0037] Add glycerin ① and 2% AG-01 catalyst ② of glycerin mass into the mixing kettle (R101) to dissolve into a homogeneous phase, and measure from the No. 4) Transport to the top of the tail gas absorption tower (T101), and enter the tower through the distributor. The catalyst is added at one time. Under normal operating conditions, it will not be added and recycled. The other...

Embodiment 2

[0051] Preparation of AG-01 catalyst:

[0052] Weigh SnCl 2 2H 2 O (quality standard: GB / T2526-93) and CuCl (quality standard: GB / T27562-2011), with SnCl 2 2H 2 The mass ratio of O to CuCl is 7 to 3 and mixed evenly to obtain AG-01 catalyst, which is ready for use.

[0053] (1) Synthesis of dichloropropanol by chlorination of glycerin:

[0054] Such as figure 2 As shown, it is a 3-stage chlorination reactor series process, including: tank chlorination reactor (R102a~R102c), tail gas absorption tank (V101), dichloropropanol (DCP) distillation tower (T105).

[0055] Add glycerin ① and AG-01 catalyst ② of 1% of the mass of glycerin into the mixing tank (R101) to dissolve into a homogeneous phase, and measure it from the outlet of the tank ③ through the first delivery pump (P101) and transport it into the exhaust gas absorption tank through No. 4 pipeline ④ (V101). The catalyst is added once, and under normal operating conditions, it is not added and recycled. Another gly...

Embodiment 3

[0069] Preparation of AG-01 catalyst:

[0070] Weigh SnCl 2 2H 2 O (quality standard: GB / T2526-93) and CuCl (quality standard: GB / T27562-2011), with SnCl 2 2H 2 Mix O to CuCl in a mass ratio of 2 to 1 to obtain the AG-01 catalyst, which is ready for use. Glycerol chlorination synthesis dichloropropanol technique is the same as embodiment 1

[0071] Result analysis

[0072] Detect the chlorinated liquid product components by gas chromatography as follows:

[0073]

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Abstract

The invention discloses a novel catalyst. The novel catalyst is prepared from SnCl2.2H2O and CuCl, and is used for synthesis of dichloropropanol by hydrochlorination of glycerin, wherein the mass ratio of SnCl2.2H2O to CuCl is (2-4):1, and preferably 7:3. In the production process of dichloropropanol, the AG-01 catalyst is only added when the preparation operation is started, and the amount of the AG-01 catalyst is 0.5 to 7wt% of the amount of glycerin, preferably 1 to 2wt%. The AG-01 catalyst is reused in normal preparation process, and is not added for a second time. Reaction rate is fast, utilization ratio of hydrogen chloride is high, product yield is high, catalyst consumption is less, and the catalyst is suitable for large-scaled industrialized production.

Description

technical field [0001] The invention relates to a composite catalyst of stannous chloride and cuprous chloride, which is mainly used as a catalyst for synthesizing dichloropropanol by glycerol hydrochlorination. Background technique [0002] Dichloropropanol, also known as dichloroglycerin, is a synthetic antiviral drug "ganciclovir" (used to treat organ transplant virus infection, AIDS, etc.), 1,3-dichloroacetone (famotidine, high efficiency and low toxicity) Raw material of deep antifungal drug fluconazole), cross-linking agent, water treatment agent and other chemical products. [0003] Dichloropropanol is an intermediate in the production of epichlorohydrin and an important organic raw material. In recent years, the rapid growth of demand for epoxy resin has effectively promoted the development of epichlorohydrin, and the development of epichlorohydrin has led to the development of dichlorohydrin production technology and the expansion of the market. [0004] At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/122C07C31/36C07C29/62
Inventor 宋秀山韩敏华陈旭辉
Owner 河北珈奥甘油化工有限公司