公开(公告)号：US20150291722A1

公开(公告)日：2015-10-15

申请号：US14601787

申请日：2015-01-21

Applicant: Shandong Yuhuang Chemical Co., Ltd. ,  Tsinghua University

Inventor： Jinfu Wang ,  Yanyan Zheng ,  Shengwei Wang ,  Tiefeng Wang ,  Shuangxi Chen ,  Confu Zhu

IPC: C08G16/02 ,  C07C41/36 ,  C07C41/09

CPC classification number: C08G16/0225 ,  C07C41/01 ,  C07C41/09 ,  C07C41/14 ,  C07C41/36 ,  C07C41/56 ,  C07C41/58 ,  C08G2/34 ,  C07C43/30

Abstract: A method for producing polyoxymethylene dimethyl ethers using fluidized bed reactor is provided. The fluidized bed reactor gives high conversion of feedstock during synthesis of polyoxymethylene dimethyl ethers. The product separation process includes pre-rectification, extractive rectification and vacuum rectification in series. In the pre-rectification process, the side-draw fraction PODE2 is recycled into the fluidized bed reactor, thus product distribution and selectivity to target components in the reactor can be improved. The extractive rectification process realizes coupling of neutralization, extraction, recovery of unconverted feedstock and products separation, thus significantly simplifies the process. The method for preparation of polyoxymethylene dimethyl ethers in this invention is simple, and has high conversion of feedstock, low energy cost and high selectivity to products.

Abstract translation: 提供了使用流化床反应器生产聚甲醛二甲醚的方法。 流化床反应器在合成聚甲醛二甲醚期间提供原料的高转化率。 产品分离过程包括预整流，萃取精馏和真空整流。 在预精馏过程中，侧馏分PODE2被再循环到流化床反应器中，从而可以提高反应器中对目标组分的产物分布和选择性。 萃取精馏过程实现中和，提取，未转化原料的回收和产物分离的偶联，从而显着简化了工艺。 本发明的聚甲醛二甲醚的制备方法简单，原料转化率高，能量成本低，产品选择性高。

公开(公告)号：US09346916B2

公开(公告)日：2016-05-24

申请号：US14589651

申请日：2015-01-05

Applicant: Shandong Yuhuang Chemical Co., Ltd. ,  Tsinghua University

Inventor： Jinfu Wang ,  Qiang Tang ,  Shengwei Wang ,  Tiefeng Wang ,  Shuangxi Chen ,  Yuqiang Wang

IPC: B01J8/24 ,  B01J8/28 ,  C08G65/00 ,  B01J8/18

CPC classification number: C08G65/00 ,  B01J8/1818 ,  B01J8/1827 ,  B01J8/1836 ,  B01J8/28 ,  B01J2208/00212 ,  B01J2208/00902 ,  B01J2208/00911 ,  B01J2208/0092 ,  C07C41/56 ,  C08G65/002 ,  C08G65/2696 ,  C07C43/30

Abstract: The invention belongs to energy chemical technical field, especially relates to a fluidized bed reactor and a method for preparation of polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde. The fluidized bed reactor comprises a gas inlet, a gas distributor, a catalyst inlet, a gas outlet, a fluid inlet, a catalyst outlet, a bottom component and an interstage component, a bottom component related gas upward channel, an interstage component related gas upward channel, a fluid outlet, a bottom downcomer and an interstage downcomer. A process for preparation of polyoxymethylene dimethyl ethers comprises the steps of: fluidizing gas is introduced into a bottom bed from the gas inlet via the bottom component related gas upward channel through the gas distributor; the fluidizing gas goes upwards and flows out of the reactor via the gas outlet; paraformaldehyde and dimethoxymethane are introduced into a bed through the fluid inlet; the fluid goes downwards and leaves the reactor via the fluid outlet. Compared with a conventional cannula reactor, the fluidized bed reactor improves the dispersion uniformity of catalyst and conversion of formaldehyde.

Abstract translation: 本发明属于能源化学技术领域，特别涉及一种流化床反应器和一种由二甲氧基甲烷和多聚甲醛制备聚甲醛二甲醚的方法。 流化床反应器包括气体入口，气体分配器，催化剂入口，气体出口，流体入口，催化剂出口，底部组分和级间组分，底部组分相关气体向上通道，级间组分相关气体 向上通道，流体出口，底部降液管和级间降液管。 一种制备聚甲醛二甲醚的方法包括以下步骤：将气体从气体入口通过底部成分相关气体向上通道通过气体分配器引入底床; 流化气体向上流动并通过气体出口流出反应器; 多聚甲醛和二甲氧基甲烷通过流体入口引入床中; 流体向下流动并通过流体出口离开反应器。 与传统的套管反应器相比，流化床反应器改善了催化剂的分散均匀性和甲醛转化率。

公开(公告)号：US09266990B2

公开(公告)日：2016-02-23

申请号：US14601787

申请日：2015-01-21

Applicant: Shandong Yuhuang Chemical Co., Ltd. ,  Tsinghua University

Inventor： Jinfu Wang ,  Yanyan Zheng ,  Shengwei Wang ,  Tiefeng Wang ,  Shuangxi Chen ,  Cunfu Zhu

IPC: C08G16/02 ,  C07C41/36 ,  C07C41/09 ,  C07C41/01 ,  C07C41/14

CPC classification number: C08G16/0225 ,  C07C41/01 ,  C07C41/09 ,  C07C41/14 ,  C07C41/36 ,  C07C41/56 ,  C07C41/58 ,  C08G2/34 ,  C07C43/30

Abstract: A method for producing polyoxymethylene dimethyl ethers using fluidized bed reactor is provided. The fluidized bed reactor gives high conversion of feedstock during synthesis of polyoxymethylene dimethyl ethers. The product separation process includes pre-rectification, extractive rectification and vacuum rectification in series. In the pre-rectification process, the side-draw fraction PODE2 is recycled into the fluidized bed reactor, thus product distribution and selectivity to target components in the reactor can be improved. The extractive rectification process realizes coupling of neutralization, extraction, recovery of unconverted feedstock and products separation, thus significantly simplifies the process. The method for preparation of polyoxymethylene dimethyl ethers in this invention is simple, and has high conversion of feedstock, low energy cost and high selectivity to products.

Abstract translation: 提供了使用流化床反应器生产聚甲醛二甲醚的方法。 流化床反应器在合成聚甲醛二甲醚期间提供原料的高转化率。 产品分离过程包括预整流，萃取精馏和真空整流。 在预精馏过程中，侧馏分PODE2被再循环到流化床反应器中，从而可以提高反应器中对目标组分的产物分布和选择性。 萃取精馏过程实现中和，提取，未转化原料的回收和产物分离的偶联，从而显着简化了工艺。 本发明的聚甲醛二甲醚的制备方法简单，原料转化率高，能量成本低，产品选择性高。

公开(公告)号：US11168263B2

公开(公告)日：2021-11-09

申请号：US17193285

申请日：2021-03-05

Applicant: Tsinghua University

Inventor： Tiefeng Wang ,  Jiajia Luo ,  Jinfu Wang ,  Tianpeng Li Zhou

IPC: C10G9/20 ,  B01J19/24 ,  B01J19/26 ,  C07C4/04 ,  C07C11/04 ,  C07C11/24

Abstract: Equipment for producing ethylene and/or acetylene from hydrocarbons, including the reaction chamber (13), burner (11), common or separate fuel gas inlets (12) and oxygen inlets (18), preheating tubes (14), a gas distributor (15), cracking gas inlets (16), and a reaction product outlet (17); the gas distributor (15), which has multiple gas inlets and gas outlets, is arranged on the cross section of the reaction chamber (13), where the gas inlet is connected to the cracking gas inlet (16), and the gas outlet is connected to the preheating tube (14). The cracking gas is uniformly distributed through the gas distributor (15) and passed through the preheating tubes (14), which are hollow tubes; the opening at the other end of the hollow tube is close to or inserted into the combustion area of the gaseous fuel and oxygen.

公开(公告)号：US20210189255A1

公开(公告)日：2021-06-24

申请号：US17193285

申请日：2021-03-05

Applicant: Tsinghua University

Inventor： Tiefeng Wang ,  Jiajia Luo ,  Jinfu Wang ,  Tianpeng LI ZHOU

IPC: C10G9/20 ,  B01J19/26 ,  C07C4/04 ,  B01J19/24

Abstract: Equipment for producing ethylene and/or acetylene from hydrocarbons, including the reaction chamber (13), burner (11), common or separate fuel gas inlets (12) and oxygen inlets (18), preheating tubes (14), a gas distributor (15), cracking gas inlets (16), and a reaction product outlet (17); the gas distributor (15), which has multiple gas inlets and gas outlets, is arranged on the cross section of the reaction chamber (13), where the gas inlet is connected to the cracking gas inlet (16), and the gas outlet is connected to the preheating tube (14). The cracking gas is uniformly distributed through the gas distributor (15) and passed through the preheating tubes (14), which are hollow tubes; the opening at the other end of the hollow tube is close to or inserted into the combustion area of the gaseous fuel and oxygen. After preheating in the hollow tubes, the cracking gas is passed through the combustion area that contains gaseous fuel and oxygen. During the cracking reaction, the reaction product is distributed around the hollow tubes to pre-heat the cracking gas in the tubes.

公开(公告)号：US20150273426A1

公开(公告)日：2015-10-01

申请号：US14589651

申请日：2015-01-05

Applicant: Shandong Yuhuang Chemical Co., Ltd. ,  Tsinghua University

Inventor： Jinfu Wang ,  Qiang Tang ,  Shengwei Wang ,  Tiefeng Wang ,  Shuangxi Chen ,  Yuqiang Wang

IPC: B01J8/24 ,  B01J8/28 ,  C08G65/00 ,  B01J8/18

CPC classification number: C08G65/00 ,  B01J8/1818 ,  B01J8/1827 ,  B01J8/1836 ,  B01J8/28 ,  B01J2208/00212 ,  B01J2208/00902 ,  B01J2208/00911 ,  B01J2208/0092 ,  C07C41/56 ,  C08G65/002 ,  C08G65/2696 ,  C07C43/30

Abstract: The invention belongs to energy chemical technical field, especially relates to a fluidized bed reactor and a method for preparation of polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde. The fluidized bed reactor comprises a gas inlet, a gas distributor, a catalyst inlet, a gas outlet, a fluid inlet, a catalyst outlet, a bottom component and an interstage component, a bottom component related gas upward channel, an interstage component related gas upward channel, a fluid outlet, a bottom downcorner and an interstage downcorner. A process for preparation of polyoxymethylene dimethyl ethers comprises the steps of: fluidizing gas is introduced into a bottom bed from the gas inlet via the bottom component related gas upward channel through the gas distributor; the fluidizing gas goes upwards and flows out of the reactor via the gas outlet; paraformaldehyde and dimethoxymethane are introduced into a bed through the fluid inlet; the fluid goes downwards and leaves the reactor via the fluid outlet. Compared with a conventional cannula reactor, the fluidized bed reactor improves the dispersion uniformity of catalyst and conversion of formaldehyde.

Abstract translation: 本发明属于能源化学技术领域，特别涉及一种流化床反应器和一种由二甲氧基甲烷和多聚甲醛制备聚甲醛二甲醚的方法。 流化床反应器包括气体入口，气体分配器，催化剂入口，气体出口，流体入口，催化剂出口，底部组分和级间组分，底部组分相关气体向上通道，级间组分相关气体 向上通道，流体出口，底部下降和级间下降。 一种制备聚甲醛二甲醚的方法包括以下步骤：将气体从气体入口通过底部成分相关气体向上通道通过气体分配器引入底床; 流化气体向上流动并通过气体出口流出反应器; 多聚甲醛和二甲氧基甲烷通过流体入口引入床中; 流体向下流动并通过流体出口离开反应器。 与传统的套管反应器相比，流化床反应器改善了催化剂的分散均匀性和甲醛转化率。