Search Results
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Heat converter, interchanger, and condenser for water-gas hydrogen production
- 1926-Apr
General view of a heat converter, interchanger, and condenser used for water-gas hydrogen production at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The term "water…
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Water gas generator at the Fixed Nitrogen Research Laboratory
- 1926-Apr
General view of the exterior of the water gas generator at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The term "water gas" commonly refers to the mixture of…
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Exterior of Fixed Nitrogen Research Laboratory's Urea Plant
- 1926-Apr
General view of the exterior of the Fixed Nitrogen Research Laboratory's Urea Plant, showing assorted apparatus and equipment used to produce Urea, a water-soluble powder form of carbonic acid frequently used as a…
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V.L. Gaddy operating compressors at Urea Plant
- 1926-Apr
General view of V.L. Gaddy demonstrating use of compressors at the Fixed Nitrogen Research Laboratory's Urea Plant. In the production of fertilizer, liquid carbon dioxide and liquid ammonia are commonly combined under…
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Dr. J.G. Thompson and Mr. C.L. Sullivan operating hydrogen burner
- 1926-Apr
General view of Dr. J.G. Thompson (left) and Mr. C.L. Sullivan (right) operating a hydrogen burner during the production of the hydrogen-nitrogen mixture used in the synthesis of ammonia at the U.S. Department of…
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Dr. J.G. Thompson with ammonia catalyst fusion pot
- 1926-Apr
General view of Dr. J.G. Thompson demonstrating use of an ammonia catalyst fusion pot at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research…
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C.M. Sullivan and P.N. Tierney with iron burner used for ammonia catalyst preparation
- 1926-Apr
General view of Mr. C.M. Sullivan (left) and Mr. P.N. Tierney (right) with an iron burner used for the preparation of ammonia catalysts at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located…
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Fixed Nitrogen Research Laboratory personnel
- Circa 1928
Group photograph of unidentified personnel from the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at…
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Study of the thermal dissociation of sodium cyanide
- Circa 1928
General view of an apparatus used to study the thermal dissociation of sodium cyanide at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Thermal dissociation is…
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Study of the Bucher Process at the Fixed Nitrogen Research Laboratory
- Circa 1928
General view of an apparatus used to study the Bucher Process for the fixation of nitrogen at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Based on research…
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Dr. C.D. Garby demonstrating formation of nitric oxide in flames
- 1926-Apr
General view of Dr. C.D. Garby demonstrating an apparatus used to study the formation of nitric oxide in flames at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
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Dr. E.W. Guernsey studying the formation of nitric oxide in explosion of carbon monoxide and oxygen
- 1926-Apr
General view of Dr. E.W. Guernsey demonstrating an apparatus used to study the formation of nitric oxide in the explosion of carbon monoxide and oxygen at the U.S. Department of Agriculture's Fixed Nitrogen Research…
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Absorption of nitrogen oxides by silica gel
- Circa 1928
General view of an apparatus used to study the absorption of nitrogen oxides by silica gel at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen…
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High-frequency apparatus at the Fixed Nitrogen Research Laboratory
- Circa 1928
General view of a high-frequency apparatus used in the Fixed Nitrogen Research Laboratory's Arc Laboratory. In the early 20th century, the arc process, in which electric generators are used to combine nitrogen and…
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Thermostat for measuring rates of reaction
- Circa 1928
General view of a thermostat apparatus used to measure rates of reaction at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory…
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Metallic contact apparatus
- Circa 1928
General view of a metallic contact apparatus, likely used to measure electrical contact between metallic objects, at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
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Diagram of an apparatus used to determine nitrogen in the presence of hydrogen
- Circa 1928
Diagram of an apparatus used to determine nitrogen in the presence of hydrogen. Several component parts of the apparatus are labelled, including a circulating device, combustion tube, and topler pump. The diagram itself…
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Laboratory at catalyst testing plant
- Circa 1928
General view of a laboratory at the Fixed Nitrogen Research Laboratory's catalyst testing plant. Various laboratory glassware and scientific apparatus are visible in the photograph, as well as a supply cabinet…
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Apparatus for making nitric acid from nitrogen dioxide
- Circa 1928
General view of an apparatus used to make nitric acid from nitrogen dioxide at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory…
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Apparatus to remove carbon dioxide from water gas
- Circa 1928
General view of an apparatus used to remove carbon dioxide from water gas, a mixture of carbon monoxide and hydrogen, at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington,…
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High-pressure pump
- Circa 1928
General view of a high-pressure pump used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at…
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High-pressure circulating pump
- Circa 1928
General view of a high-pressure circulating pump used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was…
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Apparatus for making urea from ammonium carbamate briquettes
- Circa 1928
General view of an apparatus used to make urea from ammonium carbamate briquettes at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Urea is a water-soluble powder…
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Silica gel adsorber for nitrogen dioxide
- Circa 1928
General view of an apparatus used to facilitate the adsorption of silica gel and nitrogen oxide at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Adsorption refers to…
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Colorimeter for nitrogen dioxide analysis
- Circa 1928
General view of a colorimeter used to analyze nitrogen dioxide at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. With regards to chemistry, colorimeters are used to…