US4070267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal processing system for reducing the amount of insoluble coal products in a light fraction stream
Assignee: Kerr McGee Corp
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Filing: 1976-06-01
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Granted: 1978-01-24
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Expires: 1996-06-01
Abstract
Abstract An improved system for processing coal wherein a feed mixture (comprising a dissolving solvent, insoluble coal products and soluble coal products) is separated in a first separation zone, provided with a coalescing section, into a first heavy fraction and a first light fraction (comprising soluble coal products, the dissolving solvent and some insoluble coal products), and a portion of the insoluble coal products is separated from the first light fraction by contacting at least the first light fraction with the coalescing section. Such contacting reduces the amount of insoluble coal products in the first light fraction withdrawn from the first separation zone.
Inventors
- 👤 Robert E. Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:26
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/04; C10G1/045
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
225 words
A process for reducing the amount of insoluble coal products in a light fraction stream portion of a feed mixture comprising: providing a feed mixture comprising a dissolving solvent, insoluble coal products and soluble coal products; introducing the feed mixture into a first separation zone provided with a coalescing section; maintaining the temperature level in the first separation zone in a range of from about 525° F. to about 630° F.; maintaining the pressure level in the first separation zone in a range of from about 700 psig to about 1000 psig; separating the feed mixture in the first separation zone into a first heavy fraction comprising the insoluble coal products and a first light fraction comprising the soluble coal products, the dissolving solvent and some insoluble coal products entrained in small liquid droplets; contacting at least the first light fraction in the first separtion zone with the coalescing section to coalesce the small liquid droplets containing entrained insoluble coal products present in the first light fraction into larger liquid droplets which separate from the first light fraction in the first separation zone for reducing the amount of insoluble coal products in the first light fraction to be withdrawn from the first separation zone; withdrawing the first light fraction from the first separation zone; and withdrawing the first heavy fraction from the first separation zone.
Claim 2
Dependent Claim
225 words
A process for reducing the amount of insoluble coal products in a light fraction stream portion of a feed mixture comprising: providing a feed mixture comprising a dissolving solvent, insoluble coal products and soluble coal products; introducing the feed mixture into a first separation zone provided with a coalescing section; maintaining the temperature level in the first separation zone in a range of from about 525° F. to about 630° F.; maintaining the pressure level in the first separation zone in a range of from about 700 psig to about 1000 psig; separating the feed mixture in the first separation zone into a first heavy fraction comprising the insoluble coal products and a first light fraction comprising the soluble coal products, the dissolving solvent and some insoluble coal products entrained in small liquid droplets; contacting at least the first light fraction in the first separtion zone with the coalescing section to coalesce the small liquid droplets containing entrained insoluble coal products present in the first light fraction into larger liquid droplets which separate from the first light fraction in the first separation zone for reducing the amount of insoluble coal products in the first light fraction to be withdrawn from the first separation zone; withdrawing the first light fraction from the first separation zone; and withdrawing the first heavy fraction from the first separation zone.
Claim 3
Dependent Claim
74 words
The process of claim 1 wherein the step of introducing the feed mixture into the first separation zone is defined further to include the step of; introducing the feed mixture into a first phase separating vessel; and wherein the step of separating the feed mixture in the first separation zone is defined further as separating the feed mixture in the first phase separating vessel into the first heavy fraction and the first light fraction.
Claim 4
Dependent Claim
101 words
The process of claim 2 wherein the step of separating the feed mixture in the first phase separating vessel is defined further to include the steps of: maintaining an amount of the first heavy fraction accumulated in one portion of the first phase separating vessel; and wherein the step of introducing the feed mixture into the first phase separating vessel is defined further to include the step of: introducing the feed mixture into the first heavy fraction accumulated in the first phase separating vessel; and dispersing the feed mixture within the first heavy fraction accumulated in the first phase separating vessel.
Claim 5
Dependent Claim
27 words
The process of claim 2 further comprising: contacting the feed mixture with a coalescing section prior to introducing the feed mixture into the first phase separating vessel.
Claim 6
Dependent Claim
41 words
The process of claim 4 wherein the step of contacting the first light fraction with the coalescing section is defined further to include the step of: contacting the first light fraction with another coalescing section in the first phase separating vessel.
Claim 7
Dependent Claim
37 words
The process of claim 2 wherein the step of contacting the first light fraction with the coalescing section is defined further as contacting the first light fraction with the coalescing section in the first phase separating vessel.
Claim 8
Dependent Claim
65 words
The process of claim 2 defined further to include the step of: withdrawing the first light fraction from the first phase separating vessel; and wherein the step of contacting the first light fraction with the coalescing section is defined further to include the step of: contacting first light fraction with the coalescing section after withdrawing the first light fraction from the first phase separating vessel.
Claim 9
Dependent Claim
27 words
The process of claim 7 further comprising contacting the feed mixture with another coalescing section prior to introducing the feed mixture into the first phase separating vessel.
Claim 10
Dependent Claim
42 words
The process of claim 8 wherein the step of contacting the first light fraction with the coalescing section is defined further to include the step of: contacting the first light fraction with still another coalescing section in the first phase separating vessel.
Claim 11
Dependent Claim
44 words
The process of claim 7 wherein the step of contacting the first light fraction with the coalescing section is defined further to include the step of: contacting the first light fraction with another coalescing section before being withdrawn from the first phase separating vessel.
Claim 12
Dependent Claim
49 words
The process of claim 1 wherein the step of contacting the first light fraction with the coalescing section is defined further to include the step of: contacting the feed mixture with the coalescing section before separating the feed mixture into the first light fraction and the first heavy fraction.
Claim 13
Dependent Claim
50 words
The process of claim 11 wherein the step of contacting the first light fraction with the coalescing section is defined further to include the step of: contacting the first light fraction with another coalescing section after separating the feed mixture into the first light fraction and the first heavy fraction.
Claim 14
Dependent Claim
50 words
The process of claim 1 wherein the step of contacting the first light fraction with the coalescing section is defined further to include the step of: contacting the first light fraction with the coalescing section after separating the feed mixture into the first light fraction and the first heavy fraction.
Claim 15
Dependent Claim
46 words
The process of claim 1 wherein the step of contacting the first light fraction with the coalescing section is defined further to include the step of: contacting the first light fraction with the coalescing section before withdrawing the first light fraction from the first separation zone.
Claim 16
Dependent Claim
30 words
The process of claim 14 further comprising contacting the feed mixture with another coalescing section before separating the feed mixture into the first light fraction and the first heavy fraction.
Claim 17
Dependent Claim
24 words
The process of claim 1 defined further to include the steps of: producing liquid reflux; and wetting the coalescing section with the liquid reflux.
Claim 18
Dependent Claim
36 words
The process of claim 16 wherein the step of producing the liquid reflux is defined further to include the step of: heating the first light fraction in the first separation zone to generate the liquid reflux.
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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |