US 2017/0283724 A1 · Industrial Production Plant Having Minimal Emission of Greenhouse Gases, in Particular Emission of Carbon Dioxide, and Method for the Operation Thereof

Abstract

The invention relates to an industrial production plant (1), which comprises a first production plant (2), which produces a CO2-poor and H2-rich exhaust gas from a carbon-containing feed material and which has an associated first exhaust-gas cleaning device (3) and an associated second exhaust-gas cleaning device (14). The problem addressed by the invention is that of creating a solution by means of which a carbon capture and utilization method can be effectively and efficiently performed. This problem is solved in that the industrial production plant (1) also comprises a gas-processing plant (4), which divides the exhaust gas into a carbon-containing, at least substantially H2-free partial gas flow (6) and a carbon-free, H2-rich partial gas flow (7); comprises an apparatus (19) for producing a CO2-rich gas flow, to which apparatus at least a part of a CO2-containing exhaust-gas flow (17) arising in a firing apparatus (11) can be fed after flowing through the second exhaust-gas cleaning device (14); and comprises a water electrolysis plant (24), which produces hydrogen (H2) and oxygen (02), and a second production plant (20), which produces methanol and/or secondary methanol products and which has a CO2 line connection (21) to the apparatus (19) on one side and an H2 line connection (23) to the gas-processing plant (4) and the water electrolysis plant (24) on the other side.

Claims20

Dependent claims

An industrial production plant comprising:

a first production plant producing a low-CO2 and H2-rich product gas or offgas from a carbon-containing feed with an associated first offgas purification apparatus and an associated second offgas purification apparatus,
a gas treatment plant which is connected to the first offgas purification apparatus via a first conduit connection and separates the product gas or offgas into a carbon-containing, at least substantially H2-free gas substream and an at least substantially carbon-free, H2-rich gas substream, where the substantially H2-free gas substream can be fed at least partly by means of a second conduit connection to one or more firing device(s) present in the first production plant,
a device for producing a CO2-rich gas stream, into which at least part of the CO2-containing offgas stream formed in the firing device(s) can be at least partly fed after flowing through the second offgas purification apparatus,
a water electrolysis plant producing hydrogen (H2) and oxygen (O2) and a second production plant which produces methanol and/or downstream products of methanol and is firstly connected via the CO2 conduit connection to the device producing the CO2-rich gas stream and to which the CO2-rich gas stream can be at least partly fed by means of this CO2 conduit connection and, is secondly connected via the H2-conduit connection to the gas treatment plant and the water electrolysis plant and into which the H2-rich gas substream produced in the gas treatment plant and/or the hydrogen (H2) produced in the water electrolysis plant can respectively be at least partly fed by means of this H2 conduit connection.

1 more element

A method for the at least substantially CO2-free operation of a first production plant producing a low-CO2 and H2-rich product gas or offgas from a carbon-containing feed with an associated first offgas purification apparatus and an associated second offgas purification apparatus, the method characterized in that

the low-CO2 and H2-rich product gas or offgas is fed via a first conduit connection connected to the first offgas purification apparatus to a gas treatment plant which divides the product gas or offgas into a carbon-containing, at least substantially H2-free gas substream and an at least substantially carbon-free, H2-rich gas substream and the substantially H2-free gas substream is at least partly fed via a second conduit connection to one or more firing device(s) of the first production plant,
where at least part of the CO2-containing offgas stream formed in the firing device(s) is, after passing through the second offgas purification apparatus, at least partly fed to a device for producing a CO2-rich gas stream,
where hydrogen (H2) and oxygen (O2) are produced by electrolysis of water in a water electrolysis plant and methanol and/or downstream products of methanol are produced in a second production plant and, firstly, the CO2-rich gas stream produced in the device producing the CO2-rich gas stream is at least partly fed to the second production plant and, secondly, the H2-rich gas substream produced by the gas treatment plant and/or the hydrogen (H2) produced in the water electrolysis plant is in each case at least partly fed via an H2-conduit connection to the second production plant.

Dependencies are inferred from the claim text.

Industrial Production Plant Having Minimal Emission of Greenhouse Gases, in Particular Emission of Carbon Dioxide, and Method for the Operation Thereof

Life of this patent

Industrial Production Plant Having Minimal Emission of Greenhouse Gases, in Particular Emission of Carbon Dioxide, and Method for the Operation Thereof

Life of this patent

Abstract

Claims20