A method of controlling an industrial gas production facility comprising: receiving time-dependent power data receiving time-dependent operational characteristic data; defining one or more power constraints for the operational parameters of the power network; defining one or more process constraints for the operational parameters of each industrial gas plant; generating, based on the power data, the operational characteristic data, the one or more power constraints and the one or more process constraints, control set point values for the one or more industrial gas plants to achieve a pre-determined production parameter for the industrial gas production facility; and sending the control set point values to a control system to control the one or more industrial gas plants by adjusting one or more control set points of the industrial gas plants to achieve the pre-determined production parameter for the industrial gas production facility.

A process for synthesis of ammonia including generation of makeup gas in a frontend and conversion of said makeup gas in an ammonia synthesis loop including a circulator, a converter, a condensation section and a liquid ammonia separation section, including: when the loop operates at a partial load and a flow rate of makeup gas transferred from the front end to the synthesis loop is reduced, the loop is controlled by separating a gas stream from a converter feed line at a point upstream of the converter thus forming a bypass stream; reintroducing said bypass stream at the suction side of the circulator or at a point of the loop downstream of said separation section.

A containerized system for producing anhydrous ammonia from air, water and a power source, includes a containerized hydrogen production unit that produces hydrogen gas from a water source by low temperature electrolyser, high temperature electrolyser, battolyser or by other methods; a containerized nitrogen production unit comprising an onboard air compression and storage unit that produces and stores pressurized air, a pressure swing adsorption process or other methods that use regenerative molecule that does not need any maintenance, which intakes compressed air and produces nitrogen gas through a series of adsorption and desorption processes, or other such methods of producing nitrogen from air; a containerized ammonia production unit comprising a gas booster that increases the pressure of a mixture of the hydrogen gas and the nitrogen gas using the pressurized air; a multi-reactor assembly joint in series or in parallel; and a recycle loop that separates the ammonia from unreacted gases.

The invention provides a method (10) for ammonia production, the method (10) comprising: —reacting dihydrogen and dinitrogen (115) to form ammonia in a reactor (120); providing a reactor gas mixture (125) from the reactor (120) to a recycle loop (130), wherein the recycle loop (130) comprises or is functionally coupled to a separator (140); and providing at least part of the reactor gas mixture (125) from the recycle loop (130) to the reactor (120); and —switching between a first operation mode (20) and a second operation mode (30), wherein: in the first operation mode (20) dihydrogen and dinitrogen (115) are provided to the reactor (120), and the separator (140) provides a first fraction F.sub.1 of the ammonia from the reactor gas mixture (125) to a product outlet (150); and in the second operation mode (30) the separator (140) provides a second fraction F.sub.2 of the ammonia from the reactor gas mixture (125) to the product outlet (140); wherein the first fraction F.sub.1 is larger than the second fraction F.sub.2, and wherein the method (10) comprises switching between the first operation mode (20) and the second operation mode (30) in dependence of dihydrogen availability to the reactor (120).

The invention provides a method (10) for ammonia production, the method (10) comprising: —reacting dihydrogen and dinitrogen (115) to form ammonia in a reactor (120); providing a reactor gas mixture (125) from the reactor (120) to a recycle loop (130), wherein the recycle loop (130) comprises or is functionally coupled to a separator (140); and providing at least part of the reactor gas mixture (125) from the recycle loop (130) to the reactor (120); and —switching between a first operation mode (20) and a second operation mode (30), wherein: in the first operation mode (20) dihydrogen and dinitrogen (115) are provided to the reactor (120), and the separator (140) provides a first fraction F.sub.1 of the ammonia from the reactor gas mixture (125) to a product outlet (150); and in the second operation mode (30) the separator (140) provides a second fraction F.sub.2 of the ammonia from the reactor gas mixture (125) to the product outlet (140); wherein the first fraction F.sub.1 is larger than the second fraction F.sub.2, and wherein the method (10) comprises switching between the first operation mode (20) and the second operation mode (30) in dependence of dihydrogen availability to the reactor (120).

A method of controlling an industrial gas production facility comprising: receiving time-dependent power data receiving time-dependent operational characteristic data; defining one or more power constraints for the operational parameters of the power network; defining one or more process constraints for the operational parameters of each industrial gas plant; generating, based on the power data, the operational characteristic data, the one or more power constraints and the one or more process constraints, control set point values for the one or more industrial gas plants to achieve a pre-determined production parameter for the industrial gas production facility; and sending the control set point values to a control system to control the one or more industrial gas plants by adjusting one or more control set points of the industrial gas plants to achieve the pre-determined production parameter for the industrial gas production facility.

Method for the control of pressure in a loop for the preparation of ammonia or methanol by means of an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.

A method for the control of pressure in a loop for the preparation of ammonia or methanol by using an anti-surge control valve of a compressor and/or a compressor flow regulation valve for the recirculation of loop recirculation gas at variating flow supply of fresh synthesis gas.

An ammonia synthesis converter for small production units which provides full access for routine maintenance and catalyst replacement while providing adequate catalyst pressure drop to ensure kinetic performance and reduce heat leak from the catalyst beds. A shell has a removable top head and an annular basket is removably mounted in the shell. First and second catalyst beds are disposed in the annular zone of the basket for axial down-flow in series. A quench gas is introduced into effluent from the first catalyst bed and the resulting mixture into a top of the second catalyst bed. A feed-effluent interchanger in the inner basket zone is adapted to receive effluent from the second catalyst bed and indirectly heat a feed to the first catalyst bed. Also, methods of operating and servicing the converter.

A process for synthesis of ammonia wherein an ammonia synthesis loop includes an ammonia converter where a makeup gas is reacted to form ammonia, and the loop is controlled at a partial load by reducing the synthesis pressure and maintaining the reduced pressure within a desired range by controlling a bypass line of make-up gas of the converter.