Basf Aktiengesellschaft

Basf Se Corporation

Frans Vansant

Gerhard Theis

Hans Hasse

Bernd Bessling

Jurgen Mohr

Till Adrian

Winfried Terjung

Dieter K&ouml;ffer

Jozef De Hert

Stephan Scholl

Hartmut Staatz

Axel Werner Polt

Siegfried Kruger

Jörg Schlecht

Thomas Borren

A process for heat integration in engineering processes is provided in which, in a heat carrier circuit, a heat carrier medium takes up heat from a first process stream in a first heat exchanger and releases it to a refrigeration system. In a refrigerant circuit, a refrigerant is cooled in the refrigeration system and the refrigerant takes up heat from a second process stream in a second heat exchanger or a second process stream is cooled in the refrigeration system. The first process stream is a vapor stream from a thermal separation apparatus, and the temperature of the heat carrier medium is increased by heat supply between egress from the first heat exchanger and ingress into the refrigeration system.

Process for heat integration by means of a refrigeration system

A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis, product of ethylene oxide by pressure dewatering, preferably in a battery, vacuum dewatering and subsequent purifying distillation, wherein during the vacuum dewatering an aqueous stream is withdrawn which contains-monoethylene glycol in a concentration below 1% by weight, preferably below 0.1% by weight, medium boilers and low boilers. The withdrawn aqueous stream is, optionally after further workup, removed from the system.

Method for producing highly pure monoethylene glycol

A process for the distillative recovery of high purity monoethylene glycol from the hydrolysis product of ethylene oxide by pressure dewatering, vacuum dewatering and subsequent purifying distillation, which includes the pressure dewatering columns or at least the first pressure dewatering column of the battery ( ) having a stripping section with at least one separating stage, preferably with from 2 to 10 separating stages, particularly preferably with from 3 to 6 stages, and a portion of the overhead stream of the pressure dewatering column(s) ( ) having a stripping section being removed from the system.

Cleaning apparatus for removing residues

In the preparation of ethylene oxide by direct oxidation of ethylene with air or oxygen using water as heat carrier to dissipate the heat of reaction, with water vapor being formed, a process for optimizing the specific energy consumption is proposed. In this, the water vapor is first expanded in one or more backpressure steam turbine(s) T for operating working machines M, before it is fed to one or more consumers, such as bottoms reboilers or steam injectors, for further utilization.

Method for producing ethylene oxide by directly oxidizing ethylene with air or oxygen

This invention relates to a process for preparing and isolating glycols and to a thin-film evaporator which is used in carrying out the process.

Isolation of glycols

Obtaining glycols of low aldehyde content

Method and vaporizer for vaporizing oxidation-sensitive compounds

Growing community of inventors

Kalmthout, Belgium

Frans Vansant