Patent ID: 9533270
Date: 2017-01-03
CPC Classifications: B01F,F16K,G05D,Y10T

Claim:
1. A continuous passive injection system for dispensing a chemical solution at a slow, controlled rate into a flowing process stream pressurized by a process stream pump, the system comprising: A bypass loop comprising: wherein the fluid pressure in the process stream at the bypass loop outlet is lower than the fluid pressure in the process stream at the bypass loop inlet; a chemical injection branch comprising: wherein the rate of chemical injection is controlled by the pressure control valve, which adjusts a differential pressure across the capillary flow control tube, the differential pressure across the capillary flow control tube controlling a differential pressure across the separator, which causes the separator to inject the chemical solution from the chemical solution portion of the pressure vessel into the chemical injection branch outlet, the chemical solution then flows through the bypass loop outlet and into the process stream.