Improved energy efficiency of methanol production from co2
AssigneeCri, Hf
InventorsPétur Már GÍSLASON, Viktor STEFANIV, Armen Eduardo KODJAIAN
Life of this patent
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Abstract
Described are improvements that increase the energy efficiency within a chemical synthesis and/or chemical separations plant. Implementations of the present disclosure can be in the form of hot standby operation modes, high-temperature heat pump systems, and additional efficient heat supply systems. The present disclosure provides various embodiments and configurations that can be implemented depending on the needs and challenges of a specific chemical synthesis and/or chemical separations plant.
Claims22
A hot standby system for use in a chemical synthesis plant, comprising:
- a feed line carrying a feed;
- a reactor configured for receiving the feed, converting the feed through reaction over a catalyst, so as to produce a product loop gas that is output downstream from the reactor;
- a heater operatively connected to the feed line and positioned upstream from the reactor;
- a hot standby loop configured to selectively alter a flow path of the product loop gas when a flow of feed is below a minimum threshold, the hot standby loop putting the reactor in a hot standby mode when selectively activated;
- a product loop gas cooler, downstream from the reactor and downstream from the hot standby loop, the product loop gas cooler being configured for removing heat from the product loop gas when the hot standby loop is not selectively activated;
- a condenser, downstream from the reactor and downstream from the hot standby loop, wherein latent heat is removed from the product loop gas so as to form a condensed product loop liquid;
- and
- a catch pot, downstream from the condenser, wherein the condensed product loop liquid is caught and at least partially retained in the catch pot, and wherein any uncondensed product loop gas is removed from the catch pot.
A hot standby system for use in a chemical synthesis plant, comprising:
- a feed line carrying a feed;
- a reactor configured for receiving the feed, converting the feed through reaction over a catalyst, so as to produce a product loop gas that is output downstream from the reactor;
- a heater operatively connected to the feed line and positioned upstream from the reactor;
- a product loop gas cooler, downstream from the reactor, the product loop gas cooler being configured for removing heat from the product loop gas;
- a condenser, downstream from the reactor and downstream from the hot standby loop, wherein latent heat is removed from the product loop gas so as to form a condensed product loop liquid;
- a catch pot bypass configured to selectively alter a flow path of the product loop gas when a flow of feed is below a minimum threshold, the catch pot bypass loop putting the reactor in a hot standby mode when selectively activated;
- and
- a catch pot, downstream from the condenser, wherein during a normal operation mode when the flow of feed is above the minimum threshold, the condensed product loop liquid is caught and at least partially retained in the catch pot, and wherein any uncondensed product loop gas is removed from the catch pot;
- wherein when the reactor is in the hot standby mode and the catch pot bypass is activated, the catch pot is bypassed.
-16. (canceled)
A method of operating a chemical synthesis plant in a hot standby mode, the method comprising:
- reducing a feed flow rate;
- selectively actuating at least one valve, wherein the actuating of the at least one valve is configured to direct a product loop gas from a standard flow path to a standby flow path, and
- wherein the standby flow path is a closed loop;
- and
- circulating the product loop gas within the standby flow path for a duration, until the reduced feed flow rate increases to a given threshold value.
-25. (canceled)
Dependencies are inferred from the claim text.