Integrated installation and method for flexibly using electricity

Patent metadata

Field	Value
Publication number	US-2016108809-A1
Application number	US-201414893524-A
Country	US
Kind code	A1
Filing date	Apr 30, 2014
Priority date	May 28, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

The present invention relates to an integrated plant which comprises a plant for the electrothermic production of hydrogen cyanide and a plant for electricity generation, the plant for the electrothermic production of hydrogen cyanide being connected to the plant for electricity generation via a conduit and electricity being generated in the plant for electricity generation from a product gas obtained in the plant for the electrothermic production of hydrogen cyanide. This integrated plant affords flexible use of electricity by a method in which, at times of a high electricity supply, the plant for the electrothermic production of hydrogen cyanide is operated and at least some of the hydrogen and/or gaseous hydrocarbons obtained in addition to hydrogen cyanide is stored and, at times of a low electricity supply, stored hydrogen and/or gaseous hydrocarbons are fed to the plant for electricity generation.

First claim

1 - 23 . (canceled)

24 . An integrated plant, comprising an electrothermic hydrogen cyanide production plant and an electrical power plant, wherein the electrothermic hydrogen cyanide production plant is connected to the electrical power plant via a conduit feeding a product gas obtained in the electrothermic hydrogen cyanide production plant to the electrical power plant.

25 . The integrated plant of claim 24 , wherein the electrical power plant comprises a fuel cell.

26 . The integrated plant of claim 24 , wherein the electrical power plant comprises a power generating plant with a turbine.

27 . The integrated plant of claim 26 , wherein the power generating plant with a turbine comprises a gas turbine that can be operated with hydrogen, a hydrocarbon-containing gas, or both.

28 . The integrated plant of claim 26 , wherein the power generating plant with a turbine is a gas-and-steam turbine power plant.

29 . The integrated plant of claim 24 , wherein the electrothermic hydrogen cyanide production plant comprises an arc reactor.

30 . The integrated plant of claim 24 , wherein the electrothermic hydrogen cyanide production plant comprises a reactor having an electrically heated fluidized bed of coke.

31 . The integrated plant of claim 24 , wherein the electrothermic hydrogen cyanide production plant comprises an electrically heated reactor containing a platinum-containing catalyst.

32 . The integrated plant of claim 24 , wherein the electrothermic hydrogen cyanide production plant has a device for separating the gas mixture obtained in the electrothermic production and said device for separating the gas mixture obtained in the electrothermic production is connected to the electrical power plant.

33 . The integrated plant of claim 24 , additionally comprising at least one reservoir for hydrogen, a hydrocarbon-containing gas, or both, wherein said reservoir is connected via a conduit to the electrothermic hydrogen cyanide production plant and via a conduit to the electrical power plant.

34 . The integrated plant of claim 24 , wherein:
a) the electrothermic hydrogen cyanide production plant comprises a steam generator, with which steam is generated from waste heat of the electrothermic process; b) the electrical power plant comprises a device in which electricity is generated from steam; and c) the integrated plant comprises a steam conduit, with which steam generated in the steam generator is fed to the device in which electricity is generated from steam.

35 . The integrated plant of claim 24 , additionally comprising a connection to a weather forecasting unit.

36 . A method for the flexible use of electricity, wherein the integrated plant of claim 24 is utilized and wherein:
a) at times of a high electricity supply, the electrothermic hydrogen cyanide production plant is operated and at least some of the hydrogen, gaseous hydrocarbon, or both, obtained in addition to hydrogen cyanide, is stored; and
b) at times of a low electricity supply, stored hydrogen, gaseous hydrocarbon, or both, are fed to the electrical power plant.

37 . The method of claim 36 , wherein the electrothermic hydrogen cyanide production plant comprises an arc reactor, and the gas mixture obtained from the arc reactor is mixed with a hydrocarbon-containing gas or a hydrocarbon-containing liquid for cooling.

38 . The method of claim 37 , wherein a composition, an amount, or both of said hydrocarbon-containing gas or hydrocarbon-containing liquid is chosen in dependence on the expected electricity supply.

39 . The method of claim 36 , wherein the electricity supply is calculated in advance from data of a weather forecast.

40 . The method of claim 36 , wherein the electrical power plant is a gas-and-steam turbine power plant, and wherein:
a) when there is a high electricity supply, the electrothermic hydrogen cyanide production plant is operated with an output of over 80% of a rated capacity and the electrical power plant is operated at 0-50% of a rated electrical capacity; and b) when there is a low electricity supply, the electrothermic hydrogen cyanide production plant is operated with an output of 0-50% of the rated capacity and the electrical power plant is operated at over 80% of the rated electrical capacity.

41 . The method of claim 36 , comprising the steps of:
a) setting a first threshold value and a second threshold value for an electricity supply; b) determining the electricity supply; c) changing the electrical power output of the electrical power plant in dependence on the electricity supply if the electricity supply exceeds the first threshold value and changing the output of the electrothermic hydrogen cyanide production plant in dependence on the electricity supply if the electricity supply is below the second threshold value; and d) repeating steps b) and c).

42 . The method of claim 41 , wherein the first threshold value and the second threshold value are the same.

43 . The method of claim 36 , wherein the electrothermic hydrogen cyanide production plant comprises at least one arc reactor and, within a calendar year, the arc reactors are operated on average for at least 2500 full-load hours.

44 . The method of claim 36 , wherein within a calendar year, the electrical power plant is operated for at least 4000 full-load hours.

45 . The method of claim 36 , wherein the hydrogen cyanide produced in the electrothermic hydrogen cyanide production plant is converted in at least one further process into a further product, and a byproduct from this process is used in the electrical power plant for generating electricity.

46 . The method of claim 36 , wherein the hydrogen cyanide produced in the electrothermic hydrogen cyanide production plant is converted in at least one further process into a further product and heat generated during this process is used in the electrical power plant for generating electricity.

Assignees

• Markowz Georg
• Lang Jürgen Erwin
• Schütte Rüdiger
• Evonik Degussa Gmbh

Inventors

• Markowz Georg
• Lang Jürgen Erwin
• Schütte Rüdiger

Classifications

• H01M8/0606

  with means for production of gaseous reactants · CPC title

• F01K23/10

  with exhaust fluid of one cycle heating the fluid in another cycle (F01K17/025 takes precedence) · CPC title

• B01J2219/00006

  Large-scale industrial plants · CPC title

• B01J2219/0871

  Heating or cooling of the reactor · CPC title

• B01J2208/00389

  using electric heating or cooling elements · CPC title