Use of multiple treatment agents to reduce hardness of an oilfie

Details Use of multiple treatment agents to reduce hardness of an oilfie Use of multiple treatment agents to reduce hardness of an oilfie

1997-05-30

1999-03-09

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210724, C02F 158

Patent

active

058795634

ABSTRACT:
A process is provided for treating a water to reduce its hardness by performing a series of sequential stages including a primary chemical reaction stage, a secondary chemical reaction stage and a scale removal stage. The primary chemical reaction stage includes the steps of adding a first hydroxide ion donor in the form of lime to an initial water having an initial hardness and reacting the first hydroxide ion donor to form a first portion of a scale and an intermediate water having an intermediate hardness substantially less than the initial hardness. The secondary chemical reaction stage includes the steps of adding a second hydroxide ion donor in the form of caustic to the intermediate water and reacting the second hydroxide ion donor to form a second portion of the scale and a product water having a product hardness substantially less than the intermediate hardness. The reduction contribution of the primary chemical reaction stage to total hardness reduction is substantially greater than the reduction contribution of the secondary chemical reaction stage. The scale removal stage includes the steps of separating the scale from the product water to form a sludge and disposing the sludge.

REFERENCES:
patent: 2401924 (1946-06-01), Goetz
patent: 2999809 (1961-09-01), Eigner et al.
patent: 3026261 (1962-03-01), Mayfield et al.
patent: 3839199 (1974-10-01), Weiss et al.
patent: 3929640 (1975-12-01), Dohnert
patent: 3951806 (1976-04-01), Young
patent: 4018656 (1977-04-01), Rogers et al.
patent: 4029576 (1977-06-01), Shivers
patent: 4035293 (1977-07-01), Benoit et al.
patent: 4036749 (1977-07-01), Anderson
patent: 4336232 (1982-06-01), Moritz
patent: 4366066 (1982-12-01), Rogers et al.
patent: 4392955 (1983-07-01), Soriente
patent: 4518505 (1985-05-01), Lim et al.
patent: 4663054 (1987-05-01), O'Connell et al.
patent: 4724085 (1988-02-01), Pohoreski
patent: 4839057 (1989-06-01), White
patent: 4877536 (1989-10-01), Bertness et al.
patent: 4969520 (1990-11-01), Jan et al.
patent: 5075007 (1991-12-01), Morper et al.
patent: 5340468 (1994-08-01), Hawthorne et al.
patent: 5609765 (1997-03-01), Bowman

Affiliated with

Also associated with

Rating

Use of multiple treatment agents to reduce hardness of an oilfie does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Use of multiple treatment agents to reduce hardness of an oilfie, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of multiple treatment agents to reduce hardness of an oilfie will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1317301