US 2025/0026637 A1 · CONTROL SYSTEM FOR AN APPARATUS FOR STEAM REFORMING AND PROCESS FOR CONTROLLING AN APPARATUS FOR STEAM REFORMING

Abstract

An apparatus and process for steam reforming can be configured to produce at least one product with reduced carbon dioxide and/or nitrogen oxide emissions. Some embodiments can be better adapted for retrofitting a pre-existing steam reforming process while other embodiments can be better adapted for use in a newly constructed facility. Embodiments can be configured to utilize a synthetic air oxidant to provide combustion that results in formation of a flue gas having relatively high carbon dioxide concentrations that may also have low nitrogen and low nitrogen oxide concentrations. A control system can be configured for utilization in such embodiments to control the steam reforming process and/or oxidant formation process as well. Some embodiments can also be configured to provide carbon dioxide recovery that can permit recovery of a second product stream comprised of carbon dioxide.

Claims20

Dependent claims

A control system for an apparatus for steam reforming comprising:

an oxygen analyzer positioned and configured to monitor oxygen (O2) content of flue gas to be output from a combustion chamber of a combustion device of a reformer apparatus;
a flow controlling mechanism controller of a flow control mechanism connected to an oxygen feed conduit through which oxygen passes for feeding to a mixing device to inject oxygen into gas to form an oxidant for feeding to the combustion chamber for combustion of a fuel to form the flue gas;
and
the oxygen analyzer communicatively connected to the flow controlling mechanism controller such that a flow rate of oxygen passed to the mixing device is adjustable based on the content of O2 within the flue gas such that in response to data indicating the O2 content of the flue gas is below a pre-selected low O2 content threshold, the flow rate of oxygen passed to the mixing device is increased and in response to data indicating the O2 content of the flue gas is above a pre-selected high O2 content threshold, the flow rate of oxygen passed to the mixing device is decreased.

1 more element

A process for controlling an apparatus for steam reforming, the process comprising:

monitoring oxygen (O2) content of flue gas to be output from a combustion chamber of a combustion device of a reformer apparatus;
and
adjusting a flow rate of oxygen passed to a mixing device to form an oxidant fed to the combustion chamber for combustion of a fuel based on the content of O2 within the flue gas such that in response to the O2 content of the flue gas being below a pre-selected low O2 content threshold, the flow rate of oxygen passed to the mixing device is increased and in response to the O2 content of the flue gas being above a pre-selected high O2 content threshold, the flow rate of oxygen passed to the mixing device is decreased.

A control system for an apparatus for steam reforming comprising:

an oxygen analyzer positioned and configured to monitor oxygen (O2) content of flue gas to be output from a combustion chamber of a combustion device of a reformer apparatus;
a flow controlling mechanism controller of a flow control mechanism connected to an oxygen feed conduit through which oxygen passes for feeding to a mixing device to inject oxygen into gas to form an oxidant for feeding to the combustion chamber for combustion of a fuel to form the flue gas;
the oxygen analyzer communicatively connected to the flow controlling mechanism controller such that a flow rate of oxygen passed to the mixing device is adjustable based on the content of O2 within the flue gas such that in response to data indicating the O2 content of the flue gas is below a pre-selected low O2 content threshold, the flow rate of oxygen passed to the mixing device is increased and in response to data indicating the O2 content of the flue gas is above a pre-selected high O2 content threshold, the flow rate of oxygen passed to the mixing device is decreased;
a flue gas flow controller communicatively connected to a booster or a compressor of a feed compression system of a carbon capture system, the controller configured to adjust at least one operational parameter of the booster or at least one operational parameter of the compressor based on O2 content of oxidant being fed to the combustion device such that a flow rate of the flue gas fed to the carbon capture system is decreased in response to the O2 content of the oxidant being above a pre-selected high O2 content threshold and the flow rate of the flue gas fed to the carbon capture system is increased in response to the O2 content of the oxidant being below a pre-selected low O2 content threshold;
a pressure controller positioned and configured to determine a pressure of flue gas in a stack of the combustion device or in the combustion device;
and
the pressure controller communicatively connected to a damper of the stack and/or a booster controller so that a flow rate of the flue gas output from the combustion device is increased in response to the pressure of the flue gas being at or above a first pre-selected pressure that is below a pre-selected vent pressure threshold and also higher than a first pre-selected flue gas pressure and the flow rate of the flue gas output from the combustion device is decreased in response to the pressure of the flue gas being at or below a second pre-selected pressure or the pressure of the flue gas is determined to be trending to a pre-selected low pressure threshold.

4 more elements

Dependencies are inferred from the claim text.

Control system for an apparatus for steam reforming and process for controlling an apparatus for steam reforming

Life of this patent

Control system for an apparatus for steam reforming and process for controlling an apparatus for steam reforming

Life of this patent

Abstract

Claims20