Systems and method for pump protection with a hydraulic energy transfer system

Patent metadata

Field	Value
Publication number	US-2016062370-A1
Application number	US-201514838845-A
Country	US
Kind code	A1
Filing date	Aug 28, 2015
Priority date	Aug 29, 2014
Publication date	Mar 3, 2016
Grant date	—

Abstract

A system includes an industrial system including a rotary isobaric pressure exchanger (IPX). The rotary IPX is configured to receive a first amount of a non-corrosive fluid at a first pressure and a second amount of a corrosive fluid at a second pressure. The first pressure is greater than the second pressure, and the first amount is different from the second amount. The rotary IPX is also configured to exchange pressures between the non-corrosive fluid and the corrosive fluid. Additionally, the rotary IPX is configured to output a first mixture of the corrosive fluid and the non-corrosive fluid at a third pressure and to output the non-corrosive fluid at a fourth pressure. The third pressure is greater than the fourth pressure.

First claim

1 . A system, comprising:
an industrial system, comprising:
a rotary isobaric pressure exchanger (IPX) configured to:
receive a first amount of a non-corrosive fluid at a first pressure and a second amount of a corrosive fluid at a second pressure, wherein the first pressure is greater than the second pressure, and the first amount is different from the second amount;
exchange pressures between the non-corrosive fluid and the corrosive fluid;
output a first mixture of the corrosive fluid and the non-corrosive fluid at a third pressure; and
output the non-corrosive fluid at a fourth pressure, wherein the third pressure is greater than the fourth pressure.

2 . The system of claim 1 , wherein the corrosive fluid comprises ammonium carbamate, urea, nitric acid, sulphuric acid, or a combination thereof.

3 . The system of claim 1 , wherein the first amount of the non-corrosive fluid is greater than the second amount of the corrosive fluid.

4 . The system of claim 1 , wherein the rotary IPX is configured to output a second mixture of the corrosive fluid and the non-corrosive fluid at the fourth pressure, and a percentage of the corrosive fluid in the second mixture is less than 5%.

5 . The system of claim 4 , comprising a controller configured to control the first amount of the non-corrosive fluid and the second amount of the corrosive fluid to control the percentage of the corrosive fluid in the second mixture.

6 . The system of claim 1 , comprising a controller configured to control a ratio of non-corrosive fluid to corrosive fluid in the first mixture.

7 . The system of claim 6 , wherein the controller is configured to control the first amount of the non-corrosive fluid and the second amount of the corrosive fluid to control the ratio of non-corrosive fluid to corrosive fluid in the first mixture.

8 . The system of claim 1 , wherein the industrial system comprises:
a pump or valve configured to route the non-corrosive fluid at the first pressure to the first mixture of the corrosive fluid and the non-corrosive fluid to create a third mixture of the corrosive fluid and the non-corrosive fluid; and a chemical reactor configured to receive the third mixture of the corrosive fluid and the non-corrosive fluid, wherein the third mixture increases a rate of a chemical reaction within the chemical reactor.

9 . The system of claim 1 , wherein the industrial system comprises a chemical reactor configured to provide a pressure letdown stream comprising the non-corrosive fluid at the first pressure.

10 . The system of claim 1 , wherein the industrial system comprises:
a high pressure vessel configured to contain the non-corrosive fluid at high pressure; a first pump configured to receive the non-corrosive fluid from the high pressure vessel and to route the first amount of the non-corrosive fluid at the first pressure to the rotary IPX; and a high pressure pump configured to receive the non-corrosive fluid at the fourth pressure from the rotary IPX, pressurize the non-corrosive fluid, and route the pressurized non-corrosive fluid to the high pressure vessel; wherein the rotary IPX is configured to route the first mixture of the non-corrosive fluid and the corrosive fluid at the third pressure to the high pressure vessel.

11 . A system, comprising:
a rotary isobaric pressure exchanger (IPX) configured to exchange pressures between a non-corrosive fluid and a corrosive fluid, wherein the rotary IPX comprises:
a first inlet configured to receive a first amount of the non-corrosive fluid at a first pressure;
a second inlet configured to receive a second amount of the corrosive fluid at a second pressure, wherein the first pressure is greater than the second pressure, and the first amount is different from the second amount;
a first outlet configured to output a first mixture of the corrosive fluid and the non-corrosive fluid at a third pressure; and
a second outlet configured to output the non-corrosive fluid at a fourth pressure, wherein the third pressure is greater than the fourth pressure.

12 . The system of claim 11 , wherein the corrosive fluid comprises ammonium carbamate, urea, nitric acid, sulphuric acid, or a combination thereof.

13 . The system of claim 11 , wherein the second outlet is configured to output a second mixture of the corrosive fluid and the non-corrosive fluid at the fourth pressure, and a percentage of the corrosive fluid in the second mixture is less than 5%.

14 . The system of claim 13 , comprising a controller configured to control the first amount of the non-corrosive fluid and the second amount of the corrosive fluid to control the percentage of the corrosive fluid in the second mixture.

15 . The system of claim 11 , comprising a controller configured to control the first amount of the non-corrosive fluid and the second amount of the corrosive fluid to control a ratio of non-corrosive fluid to corrosive fluid in the first mixture of the corrosive fluid and the non-corrosive fluid.

16 . The system of claim 11 , comprising a chemical reactor configured to receive the first mixture of the corrosive fluid and the non-corrosive fluid, wherein the first mixture increases a rate of a chemical reaction within the chemical reactor.

17 . The system of claim 11 , comprising a chemical reactor configured to provide a pressure letdown stream comprising the non-corrosive fluid at the first pressure.

18 . A method, comprising:
receiving a first amount of a non-corrosive fluid at high pressure at a first fluid inlet of a rotary isobaric pressure exchanger (IPX); receiving a second amount of a corrosive fluid at low pressure at a second fluid inlet of the rotary IPX, wherein the first amount is greater than the second amount; exchanging pressures between the non-corrosive fluid and the corrosive fluid using the rotary IPX; outputting a first mixture of the corrosive fluid and the non-corrosive fluid at low pressure from a first fluid outlet of the rotary IPX; and outputting the corrosive fluid at high pressure from a second fluid outlet of the rotary IPX.

19 . The method of claim 18 , comprising controlling, using a controller, a ratio of non-corrosive fluid to corrosive fluid in the first mixture of the corrosive fluid and the non-corrosive fluid by controlling the first amount of the non-corrosive fluid and the second amount of the corrosive fluid.

20 . The method of clam 18 , comprising outputting a second mixture of the non-corrosive fluid and the corrosive fluid at high pressure from the second fluid outlet of the rotary IPX, wherein a percentage of corrosive fluid in the second mixture is less than 5%.

Assignees

• Energy Recovery Inc

Inventors

• Gaines-Germain Andrea Mary
• Martin Jeremy Grant
• Ghasripoor Farshad

Classifications

• G05D11/008 Primary

  involving a fluid operating a pump motor · CPC title

• B01F15/0243

  Operations & Transport · mapped topic

• F04F13/00 Primary

  Pressure exchangers · CPC title

• B01F35/7176

  using pumps · CPC title