Process for producing sterile water for injection from potable water
AssigneeApplied Research Associates, Inc.
InventorsLixiong Li, Jean J. Renard
Life of this patent
Estimating the term…
Abstract
By treating potable water at a temperature of at least 230° C. (446° C.) and at a pressure at least equal to the pressure of saturated steam at said temperature, can produce pyrogen-free water using treatment times of 0.05 to 5 seconds or less. The addition of an oxidant, in the form of a gas, a liquid, or a solid, further decreases the required treatment time to less than 0.05 second. The reduction in equipment size achieved with this rapid treatment time allows the utilization of treatment units small enough to be easily transported to remote locations or installed in the restricted space environment existing in ships and submarines.
Claims20
A system for producing sterile, pyrogen free water for injection, said system comprising:
- a hydrothermal processing device for sterilization and depyrogenation of potable water,
- a multi-stage flash evaporation device for salt removal and heat recovery, and
- an in-situ high-temperature filtration device for particulate removal,
- said hydrothermal processing device (reactor), said flash evaporation device and said filtration device being operable simultaneously for treating potable water to sterile, demineralized, pyrogen free water the exposure time in said hydrothermal processing device (reactor) being less than five seconds.
A system for producing sterile, pyrogen free water for injection, said system comprising:
- a low temperature filter for receiving potable water,
- microchannel chambers for receiving the treated potable water from the low temperature filter and for flash evaporation coupled with heat exchange,
- high temperature filters connected to the microchannel chambers, and
- a hydrothermal processing reactor connected to the microchannel chambers and the high temperature filters for, pyrogen destruction, sterilization and particulate removal.
A process of producing sterile, demineralized, pyrogen free water from potable water in a continuous cycle, said process comprising:
- passing the potable water through microchannel chambers,
- passing the potable water through high temperature filters,
- passing the potable water through a hydrothermal processing reactor, and
- maintaining the microchannel chambers, the high temperature filters and-the hydrothermal processing reactor at a temperature greater than 230° C. and at a pressure greater than the pressure of saturated steam at said temperature to produce sterile, demineralized, pyrogen free water from potable water in a treatment time of less than five seconds, in the hydrothermal processing reactor.
Dependencies are inferred from the claim text.