KR20080035862A - Method for preparing dimethylformamide - Google Patents

Method for preparing dimethylformamide Download PDF

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KR20080035862A
KR20080035862A KR1020060102459A KR20060102459A KR20080035862A KR 20080035862 A KR20080035862 A KR 20080035862A KR 1020060102459 A KR1020060102459 A KR 1020060102459A KR 20060102459 A KR20060102459 A KR 20060102459A KR 20080035862 A KR20080035862 A KR 20080035862A
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methyl formate
carbon monoxide
dimethylformamide
dimethylamine
fractional distillation
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KR1020060102459A
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Korean (ko)
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여상운
민병석
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삼성정밀화학 주식회사
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Publication of KR20080035862A publication Critical patent/KR20080035862A/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C231/00—Preparation of carboxylic acid amides
    • C07C231/22—Separation; Purification; Stabilisation; Use of additives
    • C07C231/24—Separation; Purification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C211/00—Compounds containing amino groups bound to a carbon skeleton
    • C07C211/01—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to acyclic carbon atoms
    • C07C211/02—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
    • C07C211/03—Monoamines
    • C07C211/04—Mono-, di- or tri-methylamine
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C231/00—Preparation of carboxylic acid amides
    • C07C231/22—Separation; Purification; Stabilisation; Use of additives

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  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A method for preparing dimethylformaldehyde(DMF) is provided to lower a manufacturing cost and to reduce the generation of environmentally harmful compounds. A method for preparing dimethylformaldehyde comprises the steps of (S10) injecting carbon monoxide, dimethylamine and methyl formate into the first synthesis tower; and (S20) reacting carbon monoxide and dimethylamine and dimethylamine and methyl formate in the first synthesis tower. Preferably (S30) the obtained solution is vaporized, (S40) the liquid formed at the vaporization process is distilled by fractional distillation, and (S50) the remaining solution formed at the fractional distillation process is distilled by fractional distillation. Preferably the reaction is carried out in the presence of a sodium methylate or calcium methylate catalyst.

Description

디메틸포름아미드 제조방법{Method for preparing dimethylformamide}Method for preparing dimethylformamide

도 1은 본 발명의 한 실시예에 따른 디메틸포름아미드 제조방법을 단계적으로 설명하기 위한 흐름도이다.1 is a flow chart for explaining step by step the manufacturing method of dimethylformamide according to an embodiment of the present invention.

도 2는 도 1의 제조방법에 따른 디메틸포름아미드 제조공정의 일 구현예를 도시한 도면이다.2 is a view showing an embodiment of a dimethylformamide manufacturing process according to the manufacturing method of FIG.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

101: 제1합성탑 102: 기화기 101: first synthesis tower 102: carburetor

103: 제1증류탑 104: 제2증류탑103: first distillation tower 104: second distillation tower

105: 이온교환수지탑 201: 제2합성탑105: ion exchange resin tower 201: second synthesis tower

202: 제3증류탑 203: MF 탱크202: third distillation column 203: MF tank

본 발명은 디메틸포름아미드 제조방법에 관한 것으로서, 보다 상세하게는 제조비용을 절감하고 환경유해성분을 감소시킬 수 있는 디메틸포름아미드 제조방법에 관한 것이다.The present invention relates to a method for preparing dimethylformamide, and more particularly, to a method for preparing dimethylformamide, which can reduce manufacturing costs and reduce environmentally harmful components.

디메틸포름아미드(dimethylformamide: DMF)는 열적 및 화학적 안정성이 우수 하고 극미량의 수분을 함유하고 있으며, 고비점 및 고극성으로써 광범위한 용해능력을 지니고 있는 무색 액체이다. 디메틸포름아미드는 이와 같은 광범위한 용해능력으로 인해, 피혁, 섬유, 및 고무분야 등의 용제로 광범위하게 사용되고 있다. 이러한 디메틸포름아미드는 반응원료인 디메틸아민(dimethylamine: DMA)와 일산화탄소를 촉매와 함께 합성탑에 주입하여, 이들을 반응시킴으로써 합성된다.Dimethylformamide (DMF) is a colorless liquid with excellent thermal and chemical stability, extremely low moisture content, high boiling point and high polarity, and a wide range of solubility. Dimethylformamide is widely used as a solvent in the leather, textile, and rubber fields due to such a wide range of solubility. Such dimethylformamide is synthesized by injecting dimethylamine (DMA), which is a reaction material, and carbon monoxide together with a catalyst into a synthesis column and reacting them.

한편, 메틸포메이트(methyl formate: MF)는 반응원료인 메탄올과 이산화탄소를 촉매와 함께 또 다른 합성탑에 주입하여, 이들을 반응시킴으로써 합성되는데, 이는 물과 반응하여 개미산(formic acid)을 생성한다. 그런데, 상기 합성탑에서 합성된 메틸포메이트의 일부와 미반응된 일산화탄소는 합성탑의 상부로부터 외부로 배출된다. 이 배출가스는 상기 합성탑의 상부에 배치된 응축기를 이용하여 최대한 회수하고 있지만, 상기 응축기에 의해서도 회수되지 못한 배출가스는 다량의 유효성분을 함유한 채 플레어 스택(flare stack)으로 보내져 소각된다.Meanwhile, methyl formate (MF) is synthesized by injecting methanol and carbon dioxide, which are reaction materials, together with a catalyst into another synthesis column and reacting them, which reacts with water to produce formic acid. However, some of the methyl formate synthesized in the synthesis tower and unreacted carbon monoxide are discharged to the outside from the top of the synthesis tower. The exhaust gas is recovered as much as possible using a condenser arranged on the upper part of the synthesis column, but the exhaust gas not recovered by the condenser is sent to a flare stack containing a large amount of active ingredients and incinerated.

본 발명은 제조비용이 절감된 디메틸포름아미드 제조방법을 제공하는 것을 목적으로 한다.An object of the present invention is to provide a method for producing dimethylformamide with reduced manufacturing cost.

본 발명의 다른 목적은 환경유해성분을 감소시킬 수 있는 디메틸포름아미드 제조방법을 제공하는 것이다. Another object of the present invention is to provide a method for preparing dimethylformamide which can reduce environmentally harmful components.

본 발명에 따르면,According to the invention,

(a) 일산화탄소, 디메틸아민, 및 메틸포메이트를 반응이 일어나는 공간인 제 1합성탑에 주입하는 단계;(a) injecting carbon monoxide, dimethylamine, and methyl formate into the first synthesis tower, the space in which the reaction takes place;

(b) 상기 제1합성탑에서 상기 일산화탄소와 상기 디메틸아민을, 그리고 상기 디메틸아민와 상기 메틸포메이트를 반응시키는 단계를 포함하는 디메틸포름아미드 제조방법이 제공된다.(b) A method for preparing dimethylformamide is provided, comprising the step of reacting the carbon monoxide and the dimethylamine in the first synthesis column and the dimethylamine and the methyl formate.

본 발명의 한 실시예에 따르면, 상기 (b) 단계 이후에 상기 (b) 단계에서 형성된 합성액을 기화시키는 단계와, 상기 기화단계 이후에 상기 기화단계에서 형성된 기화액을 분별증류하는 단계와, 상기 기화액을 분별증류하는 단계 이후에 상기 분별증류단계에서 형성된 잔류액을 분별증류하는 단계를 더 포함한다.According to an embodiment of the present invention, after the step (b), the step of vaporizing the synthetic liquid formed in the step (b), and after the vaporization step, the step of distilling the vaporization liquid formed in the vaporization step, After the step of fractional distillation of the vaporized liquid further comprises the step of fractional distillation of the residual liquid formed in the fractional distillation step.

본 발명의 바람직한 실시예에 따르면, 상기 잔류액을 분별증류하는 단계 이후에 상기 분별증류단계에서 분리된 디메틸포름아미드의 pH를 조절하는 단계를 더 포함한다.According to a preferred embodiment of the present invention, after the step of fractional distillation of the residual liquid further comprises the step of adjusting the pH of the dimethylformamide separated in the fractional distillation step.

본 발명의 또 다른 실시예에 따르면, 상기 (a) 단계의 메틸포메이트는, 일산화탄소 및 메탄올을 촉매와 함께 촉매반응이 일어나는 장소인 제2합성탑에 주입하는 단계와, 상기 제2합성탑에서 상기 일산화탄소 및 메탄올을 반응시키는 단계를 포함하는 메틸포메이트 제조방법에 의해 형성된다.According to another embodiment of the present invention, the methyl formate of the step (a), the step of injecting carbon monoxide and methanol with the catalyst in the second synthesis column which is the place where the catalytic reaction occurs, and in the second synthesis tower It is formed by the methyl formate production method comprising the step of reacting the carbon monoxide and methanol.

본 발명의 또 다른 실시예에 따르면, 상기 반응은 각각 나트륨 메틸레이트 또는 칼륨 메틸레이트 촉매의 존재하에 수행된다.According to another embodiment of the invention, the reaction is carried out in the presence of a sodium methylate or potassium methylate catalyst, respectively.

이하, 첨부된 도면을 참조하여 본 발명의 한 실시예에 관하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

도 1은 본 발명의 한 실시예에 따른 디메틸포름아미드 제조방법을 단계적으 로 설명하기 위한 흐름도이고, 도 2는 도 1의 제조방법에 따른 디메틸포름아미드 제조공정의 일 구현예를 도시한 도면이다.1 is a flow chart for explaining step by step the manufacturing method of dimethylformamide according to an embodiment of the present invention, Figure 2 is a view showing an embodiment of a dimethylformamide manufacturing process according to the manufacturing method of Figure 1 .

도 2를 참조하면, 본 실시예에 따른 디메틸포름아미드 제조공정은 제1합성탑(101), 기화기(102), 제1증류탑(103), 제2증류탑(104), 이온교환수지탑(105), 제2합성탑(201), 제3증류탑(202), 및 MF 탱크(203)를 포함한다.2, the dimethylformamide manufacturing process according to the present embodiment is the first synthesis tower 101, the vaporizer 102, the first distillation tower 103, the second distillation tower 104, the ion exchange resin tower 105 ), A second synthesis tower 201, a third distillation tower 202, and an MF tank 203.

제1합성탑(101)은 촉매반응이 일어나는 장소로서, 이러한 촉매반응에 의해 디메틸포름아미드(dimethylformamide: DMF)가 생성된다. 여기서, 촉매 반응이란 촉매가 작용해서 일어나는 반응을 말하며, 촉매란 화학 반응에서 자신은 아무 반응이 일어나지 않으나 다른 물질의 반응을 촉진시키거나 지연시키는 물질을 말한다.The first synthesis tower 101 is a place where the catalytic reaction occurs, and dimethylformamide (DMF) is generated by the catalytic reaction. Here, the catalytic reaction refers to a reaction caused by the action of the catalyst, and the catalyst refers to a substance which does not occur any reaction in the chemical reaction, but promotes or delays the reaction of other substances.

이하, 도 1 및 도 2를 참조하여 제1합성탑(101)에서 디메틸포름아미드가 생성되는 원리를 구체적으로 설명한다.Hereinafter, the principle in which dimethylformamide is produced in the first synthesis tower 101 will be described in detail with reference to FIGS. 1 and 2.

먼저, 일산화탄소(CO), 디메틸아민((CH3)2NH), 및 메틸포메이트(HCOOCH3)를 제1합성탑(101)에 주입한다(S10). 이때, 촉매도 함께 주입하는 것이 바람직하다. 촉매는 주로 액상으로서 나트륨 메틸레이트 또는 칼륨 메틸레이트가 사용된다. 그러나, 본 발명이 이에 한정되는 것은 아니며, 다른 다양한 종류의 촉매가 사용될 수 있고, 액상이 아닌 고상의 촉매가 제1합성탑에 충진되어 사용될 수도 있다.First, carbon monoxide (CO), dimethylamine ((CH 3 ) 2 NH), and methyl formate (HCOOCH 3 ) are injected into the first synthesis tower 101 (S10). At this time, it is preferable to inject the catalyst together. The catalyst is mainly sodium methylate or potassium methylate as the liquid phase. However, the present invention is not limited thereto, and various other types of catalysts may be used, and solid catalysts other than liquid phase may be filled and used in the first synthesis column.

제1합성탑(101)에서 일산화탄소 및 디메틸아민은 하기 화학식 1과 같이 반응하여 디메틸포름아미드((CH3)2NCOH)를 생성한다(S20).Carbon monoxide and dimethylamine in the first synthesis tower 101 is reacted as in Chemical Formula 1 to generate dimethylformamide ((CH 3 ) 2 NCOH) (S20).

[화학식 1][Formula 1]

(CH3)2NH+ CO ( (CH3)2NCOH(CH 3 ) 2 NH + CO ((CH 3 ) 2 NCOH

또한, 제1합성탑(101)에서 디메틸아민은 하기 화학식 2와 같이 메틸포메이트와도 반응하여 디메틸포름아미드((CH3)2NCOH)를 생성한다(S20).In addition, in the first synthesis tower 101, dimethylamine also reacts with methyl formate as shown in Formula 2 to generate dimethylformamide ((CH 3 ) 2 NCOH) (S20).

[화학식 2][Formula 2]

(CH3)2NH+ HCOOCH3 ( (CH3)2NCOH + CH3OH(CH 3 ) 2 NH + HCOOCH 3 ((CH 3 ) 2 NCOH + CH 3 OH

여기서, 메틸포메이트는 메틸포메이트 제조공정에 의해 형성되는데, 상기 메틸포메이트 제조공정은 제2합성탑(201), 제3증류탑(202), 및 MF 탱크(203)를 포함한다. Here, the methyl formate is formed by a methyl formate manufacturing process, and the methyl formate manufacturing process includes a second synthesis tower 201, a third distillation column 202, and an MF tank 203.

제2합성탑(201)은 촉매반응이 일어나는 장소로서, 이러한 촉매반응에 의해 메틸포메이트(methyl formate: MF)가 생성된다.The second synthesis tower 201 is a place where the catalytic reaction occurs, and methyl formate (MF) is generated by the catalytic reaction.

이하, 도 2를 참조하여 제2합성탑(201)에서 메틸포메이트가 생성되는 원리를 구체적으로 설명한다.Hereinafter, with reference to Figure 2 will be described in detail the principle that methyl formate is produced in the second synthesis column 201.

먼저, 일산화탄소 및 메탄올을 제2합성탑(201)에 주입한다. 이때, 촉매도 함께 주입하는 것이 바람직하다. 촉매는 주로 액상으로서 나트륨 메틸레이트 또는 칼륨 메틸레이트가 사용된다. 그러나, 본 발명이 이에 한정되는 것은 아니며, 다른 다양한 종류의 촉매가 사용될 수 있고, 액상이 아닌 고상의 촉매가 제2합성탑(201)에 충진되어 사용될 수도 있다. First, carbon monoxide and methanol are injected into the second synthesis tower 201. At this time, it is preferable to inject the catalyst together. The catalyst is mainly sodium methylate or potassium methylate as the liquid phase. However, the present invention is not limited thereto, and various other types of catalysts may be used, and a solid catalyst which is not a liquid phase may be filled and used in the second synthesis tower 201.

다음에, 제2합성탑(201)에서 합성된 메틸포메이트 및 미반응된 메탄올을 제3증류탑(202)으로 이송하여 분별증류함으로써 메탄올과 메틸포메이트로 분리한다. 이 경우, 종래에는 제2합성탑으로부터 미반응된 일산화탄소를 외부로 배출시킨 후 응축기를 거쳐 회수하고 회수되지 않은 일부는 플레어 스택(flare stack)으로 보내 연소시켰는데, 미반응된 일산화탄소가 배출될 때 합성된 메틸포메이트 중 일부가 불가피하게 함께 배출되었다. 이로 인해, 메틸포메이트의 일부가 손실되고 일산화탄소와 메틸포메이트를 연소시킴으로써 환경유해성분이 발생하는 문제점이 있었다. 그러나, 본 실시예에서는, 도 2에 도시된 바와 같이, 제2합성탑(201)으로부터 배출된 미반응 일산화탄소 및 합성된 메틸포메이트를 디메틸포름아미드 생성을 위한 제1합성탑(101)에 주입함으로써(S10) 상기와 같은 종래의 문제점을 해결할 수 있다. 또한, 디메틸포름아미드 제조방법의 측면에서 보면, 제2합성탑(201)으로부터 공급되는 일산화탄소 및 메틸포메이트가 반응원료인 일산화탄소를 일부 대체함으로써 제조비용을 절감하는 효과를 달성할 수 있게 된다. Next, the methyl formate and unreacted methanol synthesized in the second synthesis tower 201 are transferred to the third distillation column 202 and separated into methanol and methyl formate by fractional distillation. In this case, conventionally, the unreacted carbon monoxide is discharged from the second synthesis tower to the outside, recovered through a condenser, and some of the unrecovered carbon is sent to a flare stack for combustion. Some of the synthesized methylformates were inevitably drained together. For this reason, a part of methyl formate is lost and environmentally harmful components are generated by burning carbon monoxide and methyl formate. However, in this embodiment, as shown in FIG. 2, unreacted carbon monoxide and the synthesized methyl formate discharged from the second synthesis tower 201 are injected into the first synthesis tower 101 for dimethylformamide production. This can solve the conventional problems as described above (S10). In addition, from the aspect of the dimethylformamide manufacturing method, it is possible to achieve the effect of reducing the manufacturing cost by partially replacing the carbon monoxide and carbon monoxide supplied from the second synthesis column 201 to the reaction raw material.

다음에, 제3증류탑(202)에서 분리된 메틸포메이트를 MF 탱크(203)로 이송한다. MF 탱크(203)로 이송된 메틸포메이트를 물과 반응시킴으로써 개미산(formic acid)을 합성할 수도 있다.Next, the methyl formate separated from the third distillation column 202 is transferred to the MF tank 203. Formic acid may be synthesized by reacting methylformate transferred to the MF tank 203 with water.

한편, 제1합성탑(101)에서 생성된 합성액을 기화기(102)로 이송하여 기화시킨다(S30). 여기서, 합성액이란 제1합성탑(101)에서 합성된 디메틸포름아미드, 미반응 반응원료, 부산물, 및 촉매염의 혼합물을 의미한다. 기화기(102)는 합성액 중 촉매염을 제거하기 위한 것으로, 이러한 촉매염은 기화기(102)내에 축적되어 제거된다.Meanwhile, the synthetic liquid generated in the first synthesis tower 101 is transferred to the vaporizer 102 and vaporized (S30). Here, the synthesis liquid means a mixture of dimethylformamide, unreacted reaction raw materials, by-products, and catalyst salts synthesized in the first synthesis tower 101. The vaporizer 102 is to remove the catalyst salt in the synthesis liquid, the catalyst salt is accumulated and removed in the vaporizer 102.

다음에, 기화기(102)에서 기화된 액(이하, 기화액)을 제1증류탑(103)으로 이 송하여 분별증류한다(S40). 제1증류탑(103)에서는 기화액 중 상대적으로 저비점을 갖는 디메틸아민과 메탄올이 기화되어 외부로 배출되고, 나머지 잔류액은 제2증류탑(104)으로 이송된다. Next, the vaporized liquid (hereinafter, vaporized liquid) in the vaporizer 102 is transferred to the first distillation column 103 for fractional distillation (S40). In the first distillation tower 103, dimethylamine and methanol having a relatively low boiling point in the vaporization liquid are vaporized and discharged to the outside, and the remaining residual liquid is transferred to the second distillation tower 104.

다음에, 제2증류탑(104)으로 이송된 잔류액을 분별증류한다(S50). 제2증류탑(104)에서는 디메틸포름아미드가 기화되고 이 보다 고비점을 갖는 물질들은 제2증류탑(104)내에 잔류하게 된다. Next, the residual liquid transferred to the second distillation column 104 is fractionally distilled (S50). In the second distillation column 104, dimethylformamide is vaporized, and materials having a higher boiling point remain in the second distillation column 104.

다음에, 제2증류탑(104)에서 기화된 디메틸포름아미드를 이온교환수지탑(105)으로 이송하여 pH를 조절한다(S60). 여기서, 디메틸포름아미드는 pH 6.6~8.0으로 조절된다.Next, the dimethylformamide vaporized in the second distillation column 104 is transferred to the ion exchange resin tower 105 to adjust the pH (S60). Here, dimethylformamide is adjusted to pH 6.6-8.0.

본 발명은 도면에 도시된 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

본 발명에 의하면, 제조비용이 절감된 디메틸포름아미드 제조방법이 제공될 수 있다.According to the present invention, there can be provided a method for producing dimethylformamide with reduced manufacturing cost.

또한 본 발명에 의하면, 환경유해성분을 감소시킬 수 있는 디메틸포름아미드 제조방법이 제공될 수 있다. In addition, according to the present invention, there can be provided a method for producing dimethylformamide that can reduce the environmentally harmful components.

Claims (5)

(a) 일산화탄소, 디메틸아민, 및 메틸포메이트를 반응이 일어나는 공간인 제1합성탑에 주입하는 단계;(a) injecting carbon monoxide, dimethylamine, and methyl formate into the first synthesis tower, the space in which the reaction takes place; (b) 상기 제1합성탑에서 상기 일산화탄소와 상기 디메틸아민을, 그리고 상기 디메틸아민과 상기 메틸포메이트를 반응시키는 단계를 포함하는 디메틸포름아미드 제조방법.(b) reacting the carbon monoxide and the dimethylamine in the first synthesis column, and reacting the dimethylamine and the methyl formate. 제1항에 있어서,The method of claim 1, 상기 (b) 단계 이후에, After step (b), 상기 (b) 단계에서 형성된 합성액을 기화시키는 단계;Vaporizing the synthetic liquid formed in step (b); 상기 기화단계 이후에 상기 기화단계에서 형성된 기화액을 분별증류하는 단계; 및Fractionating and distilling the vaporization liquid formed in the vaporization step after the vaporization step; And 상기 기화액을 분별증류하는 단계 이후에 상기 분별증류단계에서 형성된 잔류액을 분별증류하는 단계를 더 포함하는 것을 특징으로 하는 디메틸포름아미드 제조방법.And distilling the remaining liquid formed in the fractional distillation step after the fractional distillation of the vaporized solution. 제2항에 있어서,The method of claim 2, 상기 잔류액을 분별증류하는 단계 이후에 상기 분별증류단계에서 분리된 디메틸포름아미드의 pH를 조절하는 단계를 더 포함하는 것을 특징으로 하는 디메틸포 름아미드 제조방법.Dimethyl formamide production method characterized in that it further comprises the step of adjusting the pH of the dimethylformamide separated in the fractional distillation step after the step of fractional distillation of the residual liquid. 제1항에 있어서,The method of claim 1, 상기 (a) 단계의 메틸포메이트는, 일산화탄소 및 메탄올을 촉매와 함께 촉매반응이 일어나는 장소인 제2합성탑에 주입하는 단계와, 상기 제2합성탑에서 상기 일산화탄소 및 메탄올을 반응시키는 단계를 포함하는 메틸포메이트 제조방법에 의해 형성된 것을 특징으로 하는 디메틸포름아미드 제조방법.The methyl formate of step (a) includes injecting carbon monoxide and methanol into a second synthesis tower, which is a place where a catalytic reaction occurs with a catalyst, and reacting the carbon monoxide and methanol in the second synthesis tower. Dimethylformamide production method characterized in that formed by the methyl formate production method. 제1항 또는 제4항에 있어서,The method according to claim 1 or 4, 상기 반응은 각각 나트륨 메틸레이트 또는 칼륨 메틸레이트 촉매의 존재하에 수행되는 것을 특징으로 하는 디메틸포름아미드 제조방법.Wherein said reaction is carried out in the presence of a sodium methylate or potassium methylate catalyst, respectively.
KR1020060102459A 2006-10-20 2006-10-20 Method for preparing dimethylformamide KR20080035862A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113797716A (en) * 2021-10-27 2021-12-17 聊城鲁西甲胺化工有限公司 Tail gas treatment system of DMF (dimethyl formamide) production device, process and application
CN113896639A (en) * 2020-06-22 2022-01-07 昂吉(上海)环保新材料科技有限公司 3-methoxy methyl acrylate preparation system
CN113896638A (en) * 2020-06-22 2022-01-07 昂吉(上海)环保新材料科技有限公司 Preparation system of 3, 3-dimethoxy methyl propionate and operation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113896639A (en) * 2020-06-22 2022-01-07 昂吉(上海)环保新材料科技有限公司 3-methoxy methyl acrylate preparation system
CN113896638A (en) * 2020-06-22 2022-01-07 昂吉(上海)环保新材料科技有限公司 Preparation system of 3, 3-dimethoxy methyl propionate and operation method thereof
CN113797716A (en) * 2021-10-27 2021-12-17 聊城鲁西甲胺化工有限公司 Tail gas treatment system of DMF (dimethyl formamide) production device, process and application
CN113797716B (en) * 2021-10-27 2023-11-24 聊城鲁西甲胺化工有限公司 Tail gas treatment system, process and application of DMF production device

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