T-436 Comparison of Products of Vapor Phase and Foam Phase Synthesis at Different Temperatures

UNITED STATES
DEPARTMENT OF THE INTERIOR
BUREAU OF MINES
OFFICE OF SYNTHETIC LIQUID FUEL
LOUISIANA, MISSOURI

COMPARISON OF PRODUCTS OF VAPOR PHASE AND FOAM PHASE SYNTHESIS AT DIFFERENT TEMPERATURES

Table 1	Synol products from Leuna with no pretreatment
Table 2	Synol products from Leuna de-acidified before distillation.
Table 3	Products from straight vapor phase reactors at 195°C, experimental conditions as in 1 (Leuna) no pretreatment.
Table 4	Products of straight vapor phase reactors at 195°C, experimental conditions as in 2 (Leuna), de-acidified before distillation
Table 5	Products from gas circulation reactors with a normal thruput at 195°C, no pretreatment.
Table 6	Products from gas circulation reactors with a short residence time at 195°C, no pretreatment.
Table 7	Products from circulation reactors with short residence time at 195°C, de-acidified before distillation.
Table 8	Products from stirred foam reactors temperature 210°C, no pretreatment.
Table 9	Repetition of table 8.
Table 10	Products of stirred foam reactors temperature 210°C, de-acidified before distillation.
Table 11	Products of stirred foam reactors temperature 250°C, de-acidified before distillation.

Before a final judgement on the value of our synthesis oil process for the production of synol can be given, the results of a few outstanding tests and their comparison of the results of the tests of synol products from Leuna must be obtained.

The original products and the products freed from acid before distillation have been investigated. According to Dr. Reisinger, analysis does not include alcohols as such as the products are not freed from acid before testing.

Difference are not very great according to our investigations, presumably because of the alcohols were lost in the washing. Work is still continued to find out to what extent this is true.

The following results can be found from comparison of the original synol products (table 1 from Leuna) with the products from out small Fischer reactor (table 3) and with the products from gas circulation reactors (table 5, 6, and 7).

The free alcohol content of the middle oil fraction is around 25 percent on the average in the Leuna product and 20 percent in our product from the Fischer reactor; they amount to 15 percent in the products from our gas circulation furnaces with a longer time of residence, 15 percent with a shorter time of residence, and 18 to 20 percent after a previous de-acidifying of the product.

The total alcohol content in the Leuna product is 29 percent, 35 percent in the Fischer reactor, 24 percent in the gas re-circulation reactors with a long residence time, 22 percent with a short residence time and 29 percent after a previous de-acidifying.

The difference between the straight passage and the circulation reactors is slight. The former are however, better adapted for the synthesis of synol. We could give no information of the contents of the higher alcohols such as reported by Dr. Wenzel. Analyses made in Leuna are not available. We have, however, requested some products for investigation and asked for a testing by the Leuna method. There are, however, no fundamental differences in the products investigated in both places.

The products of the stirred foam reactors at 210°C containing 12 percent of free alcohols before being de-acidified, with 29 percent total alcohols, and after being de-acidified 20 percent free alcohols and 28 percent total alcohols.

The products from the foam reactors at 250°C (method of operations for middle oil production) contain 11 percent free alcohols after de-acidifying and 14 percent total alcohols in the middle oil fraction.

The sum of olefins and alcohols is higher in the products of our method of synthesis than in the synol products from Leuna.

From Dr. M. Pier's files	T-436
	W. M. Sternberg
	January 12, 1948
High Pressure Experiments
:Ludwigshafen, 558	August 27, 1941 Schmi/R