Patent ID: 8591634
Filing Date: 2013-11-26
Classification: B01D,Y10T

Abstract:
1. An apparatus for recovering a desired gas from the effluent of a chemical process reactor that utilizes two or more separate gas compositions in sequence, comprising; (a) a chemical process reactor provided with one or more lines for introducing two or more separate gas compositions into the chemical process reactor, having a signal connection to a process controller; (b) at least one inlet connected to the chemical process reactor for introducing the separate gas compositions in the chemical process reactor; (c) an effluent line from the chemical process reactor capable of removing effluents of the two or more separate gas compositions introduced into the chemical process reactor; (d) a check valve in the effluent line allowing removal of the effluent from the chemical process reactor and preventing any substantial flow of effluent to the chemical process reactor having a set cracking pressure; (e) a recovery line having a connection to the effluent line, upstream of the check valve, capable of removing a desired gas from the effluent line; (f) an automatic valve in the recovery line having a signal connection to the process controller; (g) the process controller capable of controlling introduction of two or more gas compositions in sequence into the chemical process reactor and capable of controlling operation of the automatic valve in the recovery line so that the automatic valve is open during at least a portion of the time when the desired gas is in the effluent line as a part of a gas composition, where the process controller is capable of generating and receiving process signals by signal connections with the chemical process reactor and the automatic valve; and, (h) a compressor in the recovery line capable of removing the desired gas from the effluent line in sufficient flow to close the check valve in the effluent line below the check valve's cracking pressure setting.