GB545590A - Improvements relating to the use of molten salts in heat exchange circulating systems - Google Patents

Improvements relating to the use of molten salts in heat exchange circulating systems

Info

Publication number
GB545590A
GB545590A GB2142/41A GB214241A GB545590A GB 545590 A GB545590 A GB 545590A GB 2142/41 A GB2142/41 A GB 2142/41A GB 214241 A GB214241 A GB 214241A GB 545590 A GB545590 A GB 545590A
Authority
GB
United Kingdom
Prior art keywords
maintained
nitrate
hydrogen
mixture
per cent
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
GB2142/41A
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.)
Houdry Process Corp
Original Assignee
Houdry Process Corp
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
Application filed by Houdry Process Corp filed Critical Houdry Process Corp
Publication of GB545590A publication Critical patent/GB545590A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials
    • C09K5/12—Molten materials, i.e. materials solid at room temperature, e.g. metals or salts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

545,590. Heat transmitting media. HOUDRY PROCESS CORPORATION. Feb. 17, 1941, Nos. 2142/41, [Convention date, Feb. 17, 1940], 2144/41, 2145/41 and 2146/41, [Convention dates, Sept. 27, 1940]. [Class 64 (ii)] The low-melting properties of heat-transfer salts consisting of alkali metal nitrates and nitrites are maintained by keeping constant the ratios of nitrate to nitrite ions in the mixture. This may be done by drawing off a portion of the mixture, submitting it to reduction and returning the treated portion to the system. The proportion of nitrate should be maintained between 10 per cent. and 50 per cent. The alkali content is preferably kept between 0.2 per cent. and 2 per cent., calculated as NaOH. Hydrogen, hydrocarbons, a hydrocarbon-hydrogen mixture or ammonia gas may be used for the reduction. If nitric oxide is used to neutralize the alkali it also acts to convert nitrate to nitrite. If nitrogen dioxide is used for the neutralization equal amounts of nitrate and nitrite are formed from the alkali. Nitric acid, N203, N205, mixtures of nitrogen oxides, or silica, alumina or silicaalumina gel may also be used. Reduction with hydrogen may take place in the conventional packed column which may be inclined and rotating, or in a chamber R, Fig. 2, in which the hydrogen is passed up through a removable perforated plate 31 of unglazed porcelain with a depending annular flange 32 to form a liquid seal in the annular well 30. To reduce oxidation as far as possible a low partial pressure of oxygen in the atmosphere in contact with the salt should be maintained. Usual additions such as phosphates and chromates may be made. The mixture may be used in apparatus for the control of the temperature of a catalyst or for cracking petroleum hydrocarbons. According to the Specification as open to inspection under Sect. 91 only, the composition may be maintained by mere addition of the quantity required. This subject-matter does not appear in the Specification as accepted.
GB2142/41A 1940-02-17 1941-02-17 Improvements relating to the use of molten salts in heat exchange circulating systems Expired GB545590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US545590XA 1940-02-17 1940-02-17

Publications (1)

Publication Number Publication Date
GB545590A true GB545590A (en) 1942-06-03

Family

ID=21991939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2142/41A Expired GB545590A (en) 1940-02-17 1941-02-17 Improvements relating to the use of molten salts in heat exchange circulating systems

Country Status (1)

Country Link
GB (1) GB545590A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517164A (en) * 1984-05-24 1985-05-14 Olin Corporation Purification of alkali metal nitrates
US4568352A (en) * 1984-05-24 1986-02-04 Olin Corporation Alkali metal nitrate purification
ITRM20110212A1 (en) * 2011-04-26 2012-10-27 Enea Agenzia Naz Per Le Nuo Ve Tecnologie PROCEDURE FOR THE MANAGEMENT OF START-UP AND SHUT-DOWN PHASES OF SOLAR SYSTEMS TO LINEAR PARABOLIC MANIFOLDS USING MIXTURES OF MELTED SALTS AS A FLUID THERMAL CARRIER.
WO2014114508A1 (en) 2013-01-23 2014-07-31 Basf Se Method for improving nitrate salt compositions by means of nitric acid in the use thereof as a thermal transfer medium or as a thermal accumulator medium
US9133382B2 (en) 2012-04-10 2015-09-15 Basf Se Nitrate salt compositions comprising alkali metal carbonate and their use as heat transfer medium or heat storage medium
US10011754B2 (en) 2013-01-23 2018-07-03 Basf Se Method of improving nitrate salt compositions by means of nitric acid for use as heat transfer medium or heat storage medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517164A (en) * 1984-05-24 1985-05-14 Olin Corporation Purification of alkali metal nitrates
US4568352A (en) * 1984-05-24 1986-02-04 Olin Corporation Alkali metal nitrate purification
ITRM20110212A1 (en) * 2011-04-26 2012-10-27 Enea Agenzia Naz Per Le Nuo Ve Tecnologie PROCEDURE FOR THE MANAGEMENT OF START-UP AND SHUT-DOWN PHASES OF SOLAR SYSTEMS TO LINEAR PARABOLIC MANIFOLDS USING MIXTURES OF MELTED SALTS AS A FLUID THERMAL CARRIER.
US9133382B2 (en) 2012-04-10 2015-09-15 Basf Se Nitrate salt compositions comprising alkali metal carbonate and their use as heat transfer medium or heat storage medium
WO2014114508A1 (en) 2013-01-23 2014-07-31 Basf Se Method for improving nitrate salt compositions by means of nitric acid in the use thereof as a thermal transfer medium or as a thermal accumulator medium
AU2014210130B2 (en) * 2013-01-23 2017-08-31 Basf Se Method for improving nitrate salt compositions by means of nitric acid in the use thereof as a thermal transfer medium or as a thermal accumulator medium
US10011754B2 (en) 2013-01-23 2018-07-03 Basf Se Method of improving nitrate salt compositions by means of nitric acid for use as heat transfer medium or heat storage medium

Similar Documents

Publication Publication Date Title
US2601221A (en) Dissociation of ammonia
GB1036411A (en) Synthetic zeolite and method for preparing same
US2910343A (en) Process for catalytically reducing nitrogen oxides in industrial stack gases
GB997600A (en) Synthetic phosphor and method of producing it
GB1061474A (en) Synthetic zeolites
GB1055307A (en) The preparation of organic nitriles and catalysts for use in this preparation
GB545590A (en) Improvements relating to the use of molten salts in heat exchange circulating systems
US3533963A (en) Catalytic compositions used in steam reforming and methods for their production
ES378984A1 (en) Process for the manufacture of nitrous oxide
Uchida et al. The zinc oxide-copper catalyst for carbon monoxide-shift conversion. I. The dependency of the catalytic activity on the chemical composition of the catalyst
GB1402933A (en) Preparation of zeolites
US2760939A (en) Silica-magnesia catalyst having improved regeneration characteristics
US3839545A (en) Exhaust gas purification catalyst and method therefor
Bohlbro The kinetics of the water-gas conversion IV. Influence of alkali on the rate equation
US3926850A (en) Catalyst and process for the conversion of higher hydrocarbons
GB1054895A (en)
JPS57127446A (en) Catalyst for gas purification
US2848521A (en) Treatment of hydrocarbon conversion catalysts
US1799452A (en) Process of producing hydrogen
GB1366217A (en) Process for the oxidation of carbon monoxide and hydrocarbons
GB972683A (en) Process and catalyst for eliminating combustible components from waste gases
US2118829A (en) Preparation of cobalt-copper catalysts
ES451362A1 (en) A method for the combustión of a carbon fuel. (Machine-translation by Google Translate, not legally binding)
Nyman et al. Catalytic reduction of sodium sulfate
ONO Partitioning of Fe and Mn between garnet and ilmenite: an experimental study