Patent US4572746A successfully refreshed from Google Patents.
US4572746A
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Acid removal from dry charge battery plates
Assignee: TIEGEL MANUFACTURING COMPANY A CA CORP
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Filing: 1984-03-29
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Granted: 1986-02-25
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Expires: 2004-03-29
Abstract
Abstract A method for preparing plates primarily intended for use in a dry charge battery includes washing pasted and formed battery plates in water flowing at a low flow rate until most, but not all, of the forming acid has been removed, and thereafter washing said plates in additional water flowing at a higher flow rate to remove residual acid; treating the additional wash water using an ion exchange bed to remove the acid and reusing the deacidified water as wash water.
Inventors
- 👤 Paul C. Wegner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:26
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/14; H01M4/16; H01M4/22; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
139 words
For use in connection with the manufacture of storage battery plates, a process for removing acid from the plates, comprising the steps of: (a) washing the plates in flowing water until most of the acid has been removed from the plates at a water flow rate which is lower than that of a subsequent washing of step (b); (b) thereafter, removing additional acid from the battery plates by washing said plates in additional flowing water at a water flow rate producing an acid concentration in the additional wash water less than that produced in step (a) above; (c) discharging the additional wash water resulting from step (b) and treating said discharged water to remove the acid therefrom; and (d) using the treated water from step (c) for washing in at least one of said washing steps (a) and (b).
Claim 2
Dependent Claim
139 words
For use in connection with the manufacture of storage battery plates, a process for removing acid from the plates, comprising the steps of: (a) washing the plates in flowing water until most of the acid has been removed from the plates at a water flow rate which is lower than that of a subsequent washing of step (b); (b) thereafter, removing additional acid from the battery plates by washing said plates in additional flowing water at a water flow rate producing an acid concentration in the additional wash water less than that produced in step (a) above; (c) discharging the additional wash water resulting from step (b) and treating said discharged water to remove the acid therefrom; and (d) using the treated water from step (c) for washing in at least one of said washing steps (a) and (b).
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein step (c) comprises removing acid from the discharged water by ion exchange.
Claim 4
Dependent Claim
19 words
The process of claim 1 further comprising the step of washing plates in step (b) with the treated water.
Claim 5
Dependent Claim
26 words
The process of claim 1 wherein effluent resulting from washing step (a) has an acid concentration in the range of about 1 to 5% by weight.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein the washing step (b) occurs in a plurality of stages serially.
Claim 7
Dependent Claim
15 words
The process of claim 1 wherein the washing steps occur in at least three stages.
Claim 8
Dependent Claim
46 words
The process of claim 1 wherein a first washing stage develops an effluent having an acid concentration in the range of about 1 to 5% by weight, and a final washing stage develops an effluent having a pH in the range below about 4 to 7.
Claim 9
Dependent Claim
42 words
The process of claim 1 wherein after the washing steps, the plates are dried and the drying produces an effluent, and wherein the process further comprises the steps of: (a) cooling the effluent; and (b) washing the plates with the cooled effluent.
Claim 10
Dependent Claim
44 words
The process of claim 8 wherein the drying takes place in a drying means producing an effluent, and wherein the effluent from the drying means is transferred between a cooling means, the drying means and a washing means in an essentially closed loop system.
Claim 11
Dependent Claim
15 words
The process of claim 2 wherein a resin is used to effectuate the ion exchange.
Claim 12
Dependent Claim
17 words
The process of claim 8 wherein the cooled effluent is used as wash water in step (a).
Claim 13
Dependent Claim
124 words
For use in connection with the manufacture of storage battery plates, a process for removing acid from the battery plates and managing waste water produced in washing, comprising the steps of: (a) washing the battery plates in flowing water until most of the acid has been removed from the battery plates at a water flow rate which is lower than that of a subsequent washing of step (c); (b) collecting the wash water of step (a) for reuse; (c) removing additional acid from the battery plates by washing said plates in additional flowing water; (d) treating the additional water resulting from step (c) to remove the acid therefrom; and (e) recirculating this treated water from step (d) in the process in a closed loop.
Claim 14
Dependent Claim
124 words
For use in connection with the manufacture of storage battery plates, a process for removing acid from the battery plates and managing waste water produced in washing, comprising the steps of: (a) washing the battery plates in flowing water until most of the acid has been removed from the battery plates at a water flow rate which is lower than that of a subsequent washing of step (c); (b) collecting the wash water of step (a) for reuse; (c) removing additional acid from the battery plates by washing said plates in additional flowing water; (d) treating the additional water resulting from step (c) to remove the acid therefrom; and (e) recirculating this treated water from step (d) in the process in a closed loop.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |