ES448675A1 - Procedimiento de obtencion de acido nitrico de concentracionsuperior a la azeotropica. - Google Patents

Procedimiento de obtencion de acido nitrico de concentracionsuperior a la azeotropica.

Info

Publication number
ES448675A1
ES448675A1 ES448675A ES448675A ES448675A1 ES 448675 A1 ES448675 A1 ES 448675A1 ES 448675 A ES448675 A ES 448675A ES 448675 A ES448675 A ES 448675A ES 448675 A1 ES448675 A1 ES 448675A1
Authority
ES
Spain
Prior art keywords
nitric acid
absorption
nitrogen oxides
concentration
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES448675A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to AR264336A priority Critical patent/AR208440A1/es
Application filed by Individual filed Critical Individual
Priority to ES448675A priority patent/ES448675A1/es
Priority to US05/720,559 priority patent/US4064221A/en
Publication of ES448675A1 publication Critical patent/ES448675A1/es
Priority to GB15607/77A priority patent/GB1577869A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/38—Nitric acid
    • C01B21/44—Concentration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROCEDIMIENTO DE OBTENCION DE HNO3 DE CONCENTRACION SUPERIOR A LA AZEOTROPICA, MEDIANTE ABSORCION DE OXIDOS DE NITROGENO EN AGUA O ACIDO NITRICO DILUIDO. LA PRESION PARCIAL DE LOS OXIDOS DE NITROGENO ANTES DE LA ABSORCION SE ELEVA EN PARTE POR COMPRENSION DE LOS GASES QUE CONTIENEN LOS GASES NITROSOS Y EN PARTE MEDIANTE UN CICLO DE HNO3 DILUIDO QUE SE DESCOMPONE POR ACCION DE NO CONTENIDO EN LOS GASES, ENRIQUECIENDOLOS EN NO2 Y QUE SE VUELVE A FORMAR POSTERIORMENTE POR ABSORCION DE NO2 EN AGUA CUANDO LA PRESION PARCIAL DE LOS OXIDOS DE NITROGENO ES BAJA.
ES448675A 1976-06-08 1976-06-08 Procedimiento de obtencion de acido nitrico de concentracionsuperior a la azeotropica. Expired ES448675A1 (es)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AR264336A AR208440A1 (es) 1976-06-08 1976-01-01 Procedimiento de obtencion de acido nitrico de concentracion superior a la azeotropica y obtencion de acido nitrico de concentracion inferior a la misma
ES448675A ES448675A1 (es) 1976-06-08 1976-06-08 Procedimiento de obtencion de acido nitrico de concentracionsuperior a la azeotropica.
US05/720,559 US4064221A (en) 1976-06-08 1976-09-07 Process for obtaining nitric acid of a concentration higher than the azeotropic concentration by means of the absorption of nitrogen oxides in water or diluted nitric acid
GB15607/77A GB1577869A (en) 1976-06-08 1977-04-14 Process for obtaining nitric acid of a concentration higher than the azeotropic concentration by means of the absorption of nitrogen oxides in dilute nitric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES448675A ES448675A1 (es) 1976-06-08 1976-06-08 Procedimiento de obtencion de acido nitrico de concentracionsuperior a la azeotropica.

Publications (1)

Publication Number Publication Date
ES448675A1 true ES448675A1 (es) 1977-01-01

Family

ID=8471725

Family Applications (1)

Application Number Title Priority Date Filing Date
ES448675A Expired ES448675A1 (es) 1976-06-08 1976-06-08 Procedimiento de obtencion de acido nitrico de concentracionsuperior a la azeotropica.

Country Status (4)

Country Link
US (1) US4064221A (es)
AR (1) AR208440A1 (es)
ES (1) ES448675A1 (es)
GB (1) GB1577869A (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2850054A1 (de) * 1978-11-14 1980-05-29 Uhde Gmbh Verfahren zur herstellung von salpetersaeure
DE3138814C2 (de) * 1981-09-30 1985-03-07 Davy McKee AG, 6000 Frankfurt Verfahren zur gleichzeitigen Herstellung von hochkonzentrierter und verdünnter Salpetersäure
EP0297738B1 (en) * 1987-06-29 1992-03-25 United Kingdom Atomic Energy Authority A method for the treatment of waste matter
US6284212B1 (en) 1998-11-10 2001-09-04 O'brien Robert N. Method of nitric acid formation using a catalytic solution
US6737034B2 (en) * 2001-08-02 2004-05-18 The United States Of America As Represented By The Secretary Of The Army Nitric acid production
KR100856183B1 (ko) * 2004-02-16 2008-10-10 샤프 가부시키가이샤 박막 트랜지스터와 그 제조 방법, 표시 장치, 산화막의개질 방법, 산화막의 형성 방법, 반도체 장치, 반도체장치의 제조 방법 및 반도체 장치의 제조 장치

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2088057A (en) * 1932-03-03 1937-07-27 Du Pont Production of nitric acid from oxides of nitrogen
US2098953A (en) * 1934-05-26 1937-11-16 Chemical Construction Corp Nitric acid manufacture
DE657192C (de) * 1934-08-14 1938-02-26 Hydro Nitro S A Herstellung hochkonzentrierter Salpetersaeure aus verduennter Salpetersaeure
US3399965A (en) * 1963-09-11 1968-09-03 Pullman Inc Production of 68 to 70% nitric acid
GB1306581A (en) * 1969-02-28 1973-02-14 Pintsch Bamag Ag Process for the production of nitric acid with a concentration of over 70percent by weight

Also Published As

Publication number Publication date
AR208440A1 (es) 1976-12-27
GB1577869A (en) 1980-10-29
US4064221A (en) 1977-12-20

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19911130