Patent US5512142A successfully refreshed from Google Patents.
US5512142A
Expired / Lapsed
US
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Process and device for purifying organically polluted waste water
Assignee: Individual
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Filing: 1994-07-14
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Granted: 1996-04-30
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Expires: 2014-07-14
Abstract
Abstract A process and device for purifying organically polluted waste water utilizing a primary system and a closed secondary system. The primary system includes a first heat exchanger, a second heat exchanger and a cyclone located between the two heat exchangers. The first heat exchanger evaporates the waste water into a waste water vapor and a waste water sump solution. The heat for evaporating the waste water in the first heat exchanger is obtained primarily from raw water in the secondary system. A second heat exchanger in the primary system condenses the waste water vapor and in the process causes evaporation of raw water in the secondary system. The level of waste water in the primary system is monitored as is an operational parameter in the secondary system. With the data obtained from this monitoring, the drawing off of the waste water sump solution is controlled.
Inventors
- 👤 Jakob Hoiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:41
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/38; B; B01; B01D; B01D1/00; B01D1/30; B01D1/305; B01D3/00; B01D3/007; B01D3/42; C02F1/02; C02F1/04; C02F1/043; C02F1/048; Y; Y10; Y10S; Y10S203/00; Y10S203/04; Y10S203/19
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
242 words
A process for purifying organically polluted waste water comprising the steps of: providing a primary treatment system and a separate secondary system, said primary treatment system including a waste water flowpath, a first heat exchanger in said waste water flowpath, a second heat exchanger downstream of said first heat exchanger, and a means for detecting the level of a waste water sump solution; said secondary system including a raw water inlet, an opposite side of said first heat exchanger, an opposite side of said second heat exchanger, means for heating the raw water, and a means for detecting an operational parameter of the secondary system; heating the raw water to form raw water vapor; evaporating a portion of the waste water primarily by indirect heat exchange with said raw water vapor in the first heat exchanger to form waste water vapor and a waste water sump solution, the level of which varies; condensing the waste water vapor and evaporating the raw water during condensation of the waster water vapor in the second heat exchanger; detecting the level of the waste water sump solution; detecting an operational parameter of the second system; admitting waste water to the primary system as a function of the detected level of the waste water sump solution; and drawing off waste water from the waste water sump solution as a function of the detected operational parameter of the secondary system when the detected value exceeds a set value.
Claim 2
Dependent Claim
242 words
A process for purifying organically polluted waste water comprising the steps of: providing a primary treatment system and a separate secondary system, said primary treatment system including a waste water flowpath, a first heat exchanger in said waste water flowpath, a second heat exchanger downstream of said first heat exchanger, and a means for detecting the level of a waste water sump solution; said secondary system including a raw water inlet, an opposite side of said first heat exchanger, an opposite side of said second heat exchanger, means for heating the raw water, and a means for detecting an operational parameter of the secondary system; heating the raw water to form raw water vapor; evaporating a portion of the waste water primarily by indirect heat exchange with said raw water vapor in the first heat exchanger to form waste water vapor and a waste water sump solution, the level of which varies; condensing the waste water vapor and evaporating the raw water during condensation of the waster water vapor in the second heat exchanger; detecting the level of the waste water sump solution; detecting an operational parameter of the second system; admitting waste water to the primary system as a function of the detected level of the waste water sump solution; and drawing off waste water from the waste water sump solution as a function of the detected operational parameter of the secondary system when the detected value exceeds a set value.
Claim 3
Dependent Claim
51 words
The process as defined in claim 1, wherein said means for heating in the secondary system includes a compressor having raw water vapor at its pressure side, and wherein the operational parameter of the secondary system is the temperature of the raw water vapor at the pressure side of the compressor.
Claim 4
Dependent Claim
40 words
The process as defined in claim 1, wherein said means for heating in the secondary system includes a compressor having a current applied thereto, and wherein the operational parameter of the secondary system is the current applied to the compressor.
Claim 5
Dependent Claim
24 words
The process as defined in claim 1, wherein the waste water from the waste water sump solution is drawn off in repeated time intervals.
Claim 6
Dependent Claim
16 words
The process as defined in claim 4, wherein the repeated time intervals are at even intervals.
Claim 7
Dependent Claim
30 words
The process as defined in claim 1, further comprising the step of: exhausting gases generated during the waste water condensation which are not as heavy as the waste water vapor.
Claim 8
Dependent Claim
28 words
The process as defined in claim 6, wherein the exhausting of the gases and the drawing off of waste water from the waste water sump solution occur simultaneously.
Claim 9
Dependent Claim
42 words
The process as defined in claim 1, wherein the primary system includes a cyclone, the process further including the step of: spraying an acid aqueous ammonium sulfate solution into the cyclone in counterflow to the flow direction of the waste water vapor.
Claim 10
Dependent Claim
41 words
The process as defined in claim 1, wherein the primary system includes a cyclone, the process further including the step of: spraying an aqueous sulfuric acid solution into the cyclone in counterflow to the flow direction of the waste water vapor.
Claim 11
Independent Claim
193 words
A device for purifying organically polluted waste water, comprising: a primary treatment system for the waste water, said primary system including a first heat exchanger for evaporating a portion of the waste water to form into a waste water vapor and a waste water sump solution, the level of which varies, a second heat exchanger downstream of said first heat exchanger for condensing the waste water vapor, and a cyclone located between the first and second heat exchangers; a closed secondary system including a compressor, said secondary system being coupled to said primary system by said first and second heat exchangers; a first control unit for detecting an operational parameter of said secondary system indicative of a condition of the raw water and controlling draw off of waste water sump solution from said primary system as a function of the detected operational parameter of the secondary system when the detected value exceeds a set value; and a second control unit for detecting the level of the waste water sump solution and controlling admission of waste water to said primary system as a function of the detected level of the waste water sump solution.
Claim 12
Independent Claim
193 words
A device for purifying organically polluted waste water, comprising: a primary treatment system for the waste water, said primary system including a first heat exchanger for evaporating a portion of the waste water to form into a waste water vapor and a waste water sump solution, the level of which varies, a second heat exchanger downstream of said first heat exchanger for condensing the waste water vapor, and a cyclone located between the first and second heat exchangers; a closed secondary system including a compressor, said secondary system being coupled to said primary system by said first and second heat exchangers; a first control unit for detecting an operational parameter of said secondary system indicative of a condition of the raw water and controlling draw off of waste water sump solution from said primary system as a function of the detected operational parameter of the secondary system when the detected value exceeds a set value; and a second control unit for detecting the level of the waste water sump solution and controlling admission of waste water to said primary system as a function of the detected level of the waste water sump solution.
Claim 13
Dependent Claim
26 words
The device as defined in claim 10, wherein said first control unit includes an overheating temperature sensor located directly at the pressure side of said compressor.
Claim 14
Dependent Claim
29 words
The device as defined in claim 10, wherein said first control unit includes a device for measuring the current intake of an electric motor operatively associated with said compressor.
Claim 15
Dependent Claim
24 words
The device as defined in claim 10, wherein the waste water from the waste water sump solution is drawn off in repeated time intervals.
Claim 16
Dependent Claim
16 words
The device as defined in claim 13, wherein the repeated time intervals are at even intervals.
Claim 17
Dependent Claim
32 words
The device as defined in claim 10, further comprising: an elutriation container located below a sump containing the waste water sump solution; and pipeline means connecting the elutriation container to the sump.
Claim 18
Dependent Claim
28 words
The device as defined in claim 10, wherein said second heat exchanger, includes at least one opening for exhausting gases which are lighter than the waste water vapor.
Claim 19
Dependent Claim
12 words
The device as defined in claim 16, wherein the gases are inert.
Claim 20
Dependent Claim
25 words
The device as defined in claim 16, wherein said first control unit includes a valve for controlling said at least one opening for exhausting gases.
Claim 21
Dependent Claim
32 words
The device as defined in claim 10, further comprising: means for spraying an acid aqueous ammonium sulfate solution into the cyclone in counterflow to the flow direction of the waste water vapor.
Claim 22
Dependent Claim
31 words
The device as defined in claim 10, further comprising: means for spraying an aqueous sulfuric acid solution into the cyclone in counterflow to the flow direction of the waste water vapor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-30 | 1999-10-30 | 2000-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-30 | 2003-10-30 | 2004-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-30 | 2007-10-30 | 2008-04-30 | $7700.00 | Window Closed / Lapsed |