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US 7,119,243 B2Granted
Alkylation process with efficient effluent refrigeration
AssigneeUop LLC
InventorsRobert L. Mehlberg, Dale J. Shields, John J. Senetar
Life of this patent
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Abstract
An alkylation process in which a recycle stream is cooled by heat exchange with the alkylation reactor effluent is disclosed.
Claims12
An alkylation process comprising
- a) alkylating an alkylation substrate with an alkylating agent to form alkylate in a reactor;
- b) recovering from the reactor a reactor effluent comprising the alkylate and the alkylation substrate;
- c) flashing at least a portion of the reactor effluent to form a refrigerant exchanger feed comprising the alkylate and the alkylation substrate, wherein the refrigerant exchanger feed has the same composition as the at least a portion of the reactor effluent;
- d) heating at least a portion of the refrigerant exchanger feed in a refrigerant heat exchanger and recovering from the refrigerant heat exchanger a refrigerant exchanger effluent comprising the alkylate and the alkylation substrate;
- e) passing at least a portion of the refrigerant exchanger effluent to an effluent vapor-liquid separator and recovering from the effluent vapor-liquid separator a vapor phase comprising the alkylation substrate and a liquid phase comprising the alkylate;
- f) compressing the vapor phase to form a compressed stream comprising the alkylation substrate;
- g) at least partially condensing at least a portion of the compressed stream to form a condensed stream comprising the alkylation substrate;
- h) indirectly exchanging heat in the refrigerant heat exchanger from at least a portion of the condensed stream to the at least a portion of the refrigerant exchanger feed to form a chilled recycle stream comprising the alkylation substrate;
- i) recycling at least a portion of the chilled recycle stream to the reactor;
- and
- j) recovering the alkylate from the liquid phase.
8 more elements
An alkylation process comprising
- a) alkylating an alkylation substrate with an alkylating agent to form alkylate in a reactor;
- b) recovering from the reactor a reactor effluent comprising the alkylate and the alkylation substrate;
- c) depressuring at least a portion of the reactor effluent, wherein the at least a portion of the reactor effluent after the depressuring has the same composition as the reactor effluent;
- d) heating the at least a portion of the reactor effluent after the depressuring in a refrigerant heat exchanger and recovering from the refrigerant heat exchanger a refrigerant exchanger effluent comprising the alkylate and the alkylation substrate;
- e) passing at least a portion of the refrigerant exchanger effluent to an effluent vapor-liquid separator and recovering from the effluent vapor-liquid separator a vapor phase comprising the alkylation substrate and a liquid phase comprising the alkylate;
- f) compressing the vapor phase to form a compressed stream comprising the alkylation substrate;
- g) at least partially condensing at least a portion of the compressed stream to form a condensed stream comprising the alkylation substrate;
- h) indirectly exchanging heat in the refrigerant heat exchanger from at least a portion of the condensed stream to the at least a portion of the reactor effluent to form a chilled recycle stream comprising the alkylation substrate;
- i) recycling at least a portion of the chilled recycle stream to the reactor;
- and
- j) recovering the alkylate from the liquid phase.
8 more elements
Dependencies are inferred from the claim text.