Liquid seal for recovering flared gas
AssigneeOil and Natural Gas Corporation Limited
InventorPadam Singh
Life of this patent
Estimating the term…
Abstract
The liquid seal according to the present invention consists of a U-tube (1, 2) having one arm (1) connected to the pipe (8) collecting all the gas vented from across the plant and other arm (2) connected to a liquid holder (5). A pipe (6) provided at the top of the liquid holder (5) is connected to the gas pipe (9) leading to the flare while there is a pipe (4) at the bottom of the said liquid holder fitted with a non-return valve (10) connecting to the bottom of U-tube (1, 2). There is provided a drain pipe (3) at the bottom U-tube (1, 2) to drain out the liquid if needed.
Claims8
A liquid seal means comprising of:
- (a) a bent tube, preferably of U shape, such U-tube having one arm connected to the pipe collecting all the vented gas released from the plant and other arm connected to a liquid holder;
- (b) a pipe, fitted with a non-return valve, connecting the bottom of the liquid holder to the bottom of the U-tube;
- (c) the top of the liquid holder connected to the pipe leading to the flare stack;
- the U-tube and the liquid holder forming a structure so as to form the only passage available for the gas to escape from the plant to the flare stake;
- such gas escaping from the plant to the flare only when the liquid in the said U-tube has been completely displaced into the liquid holder due to the pressure applied by such escaping gas.
A liquid seal means, constructed and arranged substantially as herein described, with reference to and as illustrated in the accompanying drawings.
A device for the recovery of gas, constructed and arranged substantially as herein described, with reference to and as illustrated in the accompanying drawings.
Dependencies are inferred from the claim text.