# US 4,909,811 A · Process on or with liquid

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- Number: US 4,909,811 A
- Document ID: US4909811A
- Status: Granted
- Kind: A
- Application number: 07/178,363
- Filed: 1988-04-06
- Granted: 1990-03-20
- Earliest claimed: 1987-04-10
- Assignees: Torftech Limited
- Inventors: Christopher E. Dodson
- Web page: https://patentgrep.com/patent/US4909811A

## CPC

- B01F 33/403: {for mixing liquids (B01F33/402, B01F33/405, B01F33/406 take precedence)}
- B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06)

## Abstract

A method of carrying out a process on or with liquid comprises moving a bed of the liquid in a band 28 continuously along an annular path defined in a chamber 12 by passing fluid 38 having both circumferential and vertical components through the bed along the path during the carrying out of the process.

## Claims

### Claim 1

A method of carrying out a process on or with a liquid comprising the steps of (1) introducing the liquid into a chamber bounded by a vertically disposed tubular wall above a horizontal annular fluid inlet to the chamber, and the (2) passing fluid upwardly through an annular array of inclined vanes spanning said annular fluid inlet such that the fluid supports a bed of the liquid above the vanes and moves the bed in a compact band continuously circulating along an annular path above the vanes as the fluid passes through the bed with circumferential and vertical flow components.

### Claim 2 (depends on 1)

A method as claimed in claim 1, comprising feeding the bed with the liquid as the bed is moved along said path, and removing the resulting product of said process from the moving bed.

### Claim 3 (depends on 1)

A method as claimed in claim 1, wherein said fluid which is passed through the bed comprises gaseous matter.

### Claim 4 (depends on 3)

A method as claimed in claim 3, wherein the gaseous matter treats, is treated by, or reacts with, the liquid as it passes through the bed.

### Claim 5 (depends on 3)

A method as claimed in claim 3, wherein the gaseous matter has solid particulate matter entrained therewith.

### Claim 6 (depends on 5)

A method as claimed in claim 5, wherein the solid particulate matter treats, is treated by, mixed with, or reacts with, the liquid during passage through the bed with the gaseous matter

### Claim 7 (depends on 3)

A method as claimed in claim 3, wherein the gaseous matter has a vapour or a mist entrained therewith.

### Claim 8 (depends on 7)

A method as claimed in claim 7, wherein the vapour or mist treats, is treated by, mixes with, or reacts with, the liquid during passage through the bed with the gaseous matter.

### Claim 9 (depends on 1)

A method as claimed in claim 1, wherein the fluid which is passed through the bed comprises liquid matter.

### Claim 10 (depends on 9)

A method as claimed in claim 9, wherein the liquid matter treats, is treated by, mixes with, or reacts with, the liquid in the bed during passage through the bed.

### Claim 11 (depends on 9)

A method as claimed in claim 9, wherein the liquid matter has solid particulate material entrained therewith.

### Claim 12 (depends on 11)

A method as claimed in claim 11, wherein the solid particulate material treats, is treated by, mixes with, or reacts with, the liquid in the bed during passage through the bed with the liquid matter.

### Claim 13 (depends on 1)

A method as claimed in claim 1 ,wherein the liquid on or with which the process is carried out has particulate material mixed therewith.

### Claim 14 (depends on 1)

A method as claimed in claim 1, wherein the liquid on or with which the process is carried out contains micro-organisms.

### Claim 15 (depends on 1)

A method as claimed in claim 1, wherein the liquid on or with which the process is carried out comprises liquid droplets.

### Claim 16 (depends on 1)

A method as claimed in claim 1, wherein particulate matter is moved with the liquid in said band along said annular path.

### Claim 17 (depends on 16)

A method as claimed in claim 16, wherein the particulate matter is treated by the liquid as it moves therewith along said annular path.

### Claim 18 (depends on 1)

A method as claimed in claim 1, wherein said fluid which is passed through said bed comprises a first fluid which is passed through said bed along a first portion of said annular path to treat the liquid in the bed as it is moved along said first portion and a second fluid which is passed through said bed along a second portion of the bed to be treated by the liquid which has been treated during its passage through said first portion.

### Claim 19 (depends on 18)

A method as claimed in claim 18, wherein said liquid is cooled by said first fluid, and the said second fluid is cooled by the thus cooled liquid.

### Claim 20 (depends on 1)

A product of a method as claimed in claim 1.