# US 9,519,891 B1 · System and method for recycling non-reusable refrigerant containers

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- Number: US 9,519,891 B1
- Document ID: US9519891B1
- Status: Granted
- Kind: B1
- Application number: 14/252,899
- Filed: 2014-04-15
- Granted: 2016-12-13
- Earliest claimed: 2007-10-14
- Assignees: Hudson Technologies, Inc.
- Applicants: Hudson Technologies, Inc.
- Inventors: Kevin Zugibe
- Web page: https://patentgrep.com/patent/US9519891B1

## CPC

- G06Q 10/30: Administration of product recycling or disposal
- F25B 45/00: Arrangements for charging or discharging refrigerant
- Y02W 90/00: Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

A system and method for recycling non-reusable refrigerant transport containers. At least one intact refrigerant transport container is received into a sealed chamber. The refrigerant transport container is punctured to release residual refrigerant, which is removed and compressed. The container is shredded and/or compacted. A refrigerant transport container deposit program is provided, comprising: encoding a deposit container prior to use; receiving the encoded spent container and releasing the imposed deposit; automatically removing residual refrigerant from the spent container; and recycling materials from the refrigerant transport container. A database storing a record relating to the encoded refrigerant transport containers may be employed for tracking.

## Claims

### Claim 1

A method for recycling refrigerant, comprising:
receiving a container having refrigerant content;
determining an identification of the container;
automatically determining a refrigerant content of the container;
removing substantially all refrigerant content from the container; and
accounting for the received container in an automated database.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the container comprises a refrigerant transport container, and the contents comprises residual refrigerant in the refrigerant transport container.

### Claim 3 (depends on 2)

The method according to claim 2, wherein said determining comprises automatically determining a type of refrigerant content of the refrigerant transport container by at least one of reading a machine readable code associated with the refrigerant transport container and determining a color of the refrigerant transport container.

### Claim 4 (depends on 3)

The method according to claim 3, further comprising compressing and storing the residual refrigerant removed from the refrigerant transport container in one of a plurality of available storage vessels selectively in dependence on a type of residual refrigerant.

### Claim 5 (depends on 2)

The method according to claim 2, wherein said determining comprises performing an automated refrigerant composition analysis of the residual refrigerant.

### Claim 6 (depends on 5)

The method according to claim 5, further comprising storing the residual refrigerant in one of a plurality of storage vessels selectively in dependence on a type of refrigerant.

### Claim 7 (depends on 1)

The method according to claim 1, wherein said accounting comprises accounting for at least a deposit on the container.

### Claim 8 (depends on 1)

The method according to claim 1, further comprising puncturing the container within a chamber to allow removal of the refrigerant, and at least one of shredding and compacting the punctured container with at least one of a shredder and a compactor, wherein the at least one of the shredder and the compactor is isolated from the chamber during the puncturing and removing.

### Claim 9

A system for recycling a refrigerant container having refrigerant content, comprising:
an electronic reader configured to identify the refrigerant container;
an automated control, configured to control processing of the refrigerant container in dependence on the identification;
a compressor configured to compress refrigerant removed from the refrigerant container; and
a plurality of storage vessels, each configured to separately store refrigerant from respective refrigerant containers, wherein the compressed refrigerant from the compressor is stored in a respective storage vessel selectively in dependence on the automated control.

### Claim 10 (depends on 9)

The system according to claim 9, wherein the refrigerant container comprises a refrigerant transport container, and the contents comprises residual refrigerant in the refrigerant transport container.

### Claim 11 (depends on 10)

The system according to claim 10, wherein the automated control is further configured to automatically determine a type of refrigerant content of the refrigerant transport container by at least reading a machine readable code associated with the refrigerant transport container.

### Claim 12 (depends on 10)

The system according to claim 10, wherein the automated control is further configured to automatically determine a type of refrigerant content of the refrigerant transport container by at least reading a color associated with the refrigerant transport container.

### Claim 13 (depends on 10)

The system according to claim 10, further comprising a refrigerant composition analyzer configured to determine a type of refrigerant composition in the refrigerant transport container by performing a refrigerant composition analysis of the residual refrigerant.

### Claim 14 (depends on 13)

The system according to claim 13, further comprising a database configured to account for the recycling of the refrigerant content of the refrigerant container.

### Claim 15 (depends on 9)

The system according to claim 9, further comprising a chamber, wherein the refrigerant container is punctured within the chamber to release the refrigerant content, and at least one of a shredder and a compactor which is isolated from the chamber during the puncturing.

### Claim 16 (depends on 9)

The system according to claim 9, further comprising a database configured to store records for tracking a plurality of refrigerant containers.

### Claim 17 (depends on 9)

The system according to claim 9, further comprising:
an encoding associated with the refrigerant container;
a database storing a record relating to the refrigerant container, said database record relating at least to a deposit charged for the refrigerant container; and
an automated control, configured to update the database record for the refrigerant container based on the refrigerant recycling.

### Claim 18

A method for implementing a refrigerant container deposit program, comprising:
encoding a refrigerant container;
imposing a deposit on the encoded refrigerant container;
receiving an encoded refrigerant container at a refrigerant recycling facility;
automatically releasing the imposed deposit by updating a database record associated with recycling of refrigerant from the refrigerant container;
automatically removing residual refrigerant from the refrigerant container; and
recycling the encoded container separate from the residual refrigerant.

### Claim 19 (depends on 18)

The method according to claim 18, wherein:
the refrigerant recycling facility comprises a recycling machine, configured to automatically remove residual refrigerant from the encoded refrigerant transport container with a vacuum pump and to compress the removed residual refrigerant to a form liquid, which is selectively stored in one of a plurality of storage vessels in dependence on a composition of the residual refrigerant.

### Claim 20 (depends on 19)

The method according to claim 19, wherein the composition of the residual refrigerant is automatically determined by a real-time analyzer.
