Gas purification system
First Claim
1. A system for purifying coal carbonization product gas containing NCN gas, H2 S gas and NH3 gas comprisinga closed chamber,a first treatment means secured in an upper portion of said closed chamber,an absorbent liquid resuscitation means secured in a lower portion of said closed chamber and spaced from said first treatment means,means for feeding a coal carbonization product gas into said closed chamber in an area between said first treatment means and said absorbent liquid resuscitation means,a plurality of premix nozzles secured to said closed chamber at its bottom,a compressor connected to said premix nozzles to supply oxygen to said resuscitation means,spray means mounted in an upper portion of said closed chamber above said first treatment means,pump means connected via a supply line to a side of said closed chamber in an area including said resuscitation means,means connecting said spray means to said pump supply line which feeds an absorbent liquid resuscitated in said resuscitation means to said spray means,circulation pipe means secured to said pump supply line and to said premix nozzles which mixes an absorbent liquid with the oxygen from said air compressor before admission into said resuscitation means via said premix nozzles,a second treatment means connected to a top portion of said closed chamber above said first treatment means through a supply conduit means, said second treatment means being adapted to remove NH3 gas remaining in the coal carbonization gas directed from said first treatment means,said premix nozzle means is in a form of a nozzle including therein a resuscitation gas passage joining an absorbent liquid passage, whereby the resuscitation gas is mixed into the absorbent liquid in fine bubbles prior to entry into said resuscitation means, andwhereby the resuscitation gas discharged from said resuscitation means disposed below said first treatment means mixes with the coal carbonization gas and is delivered via said first treatment means with the coal carbonization product gas discharged therefrom through said supply conduit means to said second treatment means.
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Accused Products
Abstract
A gas purification system has: a first treatment apparatus, which purifies an untreated feed gas, containing toxic ingredients such as HCN gas, H2 S gas and NH3 gas, into a primary treated gas by causing the feed gas to contact with an alkaline absorbent liquid; an absorbent-liquid-resuscitation apparatus, which refreshes the absorbent liquid, after absorbing the toxic ingredients, by bubblingly introducing a resuscitation gas; and a second treatment apparatus, which further purifies the primary treated gas into a secondary treated gas by strippingly capturing any possible remnant NH3 gas still present in the former. The resuscitation gas and the toxic-ingredient-absorbed absorbent liquid are forcibly converged by premix nozzles into combined gas/liquid jets as are injected into the absorbent-liquid-resuscitation apparatus. The primary treated gas and the gas coming from the resuscitation apparatus as its effluent waste are commingled and the resultant mixed gas is then fed into and treated within the second treatment apparatus.
20 Citations
1 Claim
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1. A system for purifying coal carbonization product gas containing NCN gas, H2 S gas and NH3 gas comprising
a closed chamber, a first treatment means secured in an upper portion of said closed chamber, an absorbent liquid resuscitation means secured in a lower portion of said closed chamber and spaced from said first treatment means, means for feeding a coal carbonization product gas into said closed chamber in an area between said first treatment means and said absorbent liquid resuscitation means, a plurality of premix nozzles secured to said closed chamber at its bottom, a compressor connected to said premix nozzles to supply oxygen to said resuscitation means, spray means mounted in an upper portion of said closed chamber above said first treatment means, pump means connected via a supply line to a side of said closed chamber in an area including said resuscitation means, means connecting said spray means to said pump supply line which feeds an absorbent liquid resuscitated in said resuscitation means to said spray means, circulation pipe means secured to said pump supply line and to said premix nozzles which mixes an absorbent liquid with the oxygen from said air compressor before admission into said resuscitation means via said premix nozzles, a second treatment means connected to a top portion of said closed chamber above said first treatment means through a supply conduit means, said second treatment means being adapted to remove NH3 gas remaining in the coal carbonization gas directed from said first treatment means, said premix nozzle means is in a form of a nozzle including therein a resuscitation gas passage joining an absorbent liquid passage, whereby the resuscitation gas is mixed into the absorbent liquid in fine bubbles prior to entry into said resuscitation means, and whereby the resuscitation gas discharged from said resuscitation means disposed below said first treatment means mixes with the coal carbonization gas and is delivered via said first treatment means with the coal carbonization product gas discharged therefrom through said supply conduit means to said second treatment means.
Specification
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- Resources
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Current AssigneeOsaka Gas Company Limited
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Original AssigneeOsaka Gas Company Limited
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InventorsKatagiri, Katsuo, Shimazu, Kiyotaka
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Primary Examiner(s)Nozick, Bernard
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Application NumberUS06/448,104Time in Patent Office432 DaysField of Search55/46-48, 55/52-54, 55/56, 55/68, 55/70, 55/71, 55/73, 55/85, 55/89, 55/196, 55/228, 423/234, 423/233, 423/236, 423/238, 423/573 R, 422/170, 201/28-30, 202/270US Class Current422/170CPC Class CodesB01D 53/00 Separation of gases or vapo...C10G 1/002 in combination with oil con...
