PL14043B3 - A method for obtaining water-soluble products from brown coal or similar fossil materials. - Google Patents

Description

The longest term of the patent until January 21, 1944. The main patent No. 9892 protects the preparation of water-soluble, chlorine-containing products from ground brown coal and similar mineral materials, which is a process that relies on these bodies is treated with chlorine in the presence of such an amount of alkali that the environment remains neutral or slightly alkaline and only becomes acid at the end. It has now been found that it is possible to obtain exactly the same products, since the chlorination of the above starting materials is carried out by adding slowly in the sodium liquor so that the environment is slightly acid to litmus and only at the end it becomes clearly acidic either by adding chlorine or by adding acids. This method can be applied to all the brown coal transformation products mentioned in the patent No. 9892, which exhibit a low acid reaction in a weak acid environment. Humic compounds due to their insolubility in acids. Example I. 100 parts. wt. The easily dissolving coal of the furrow extracts from Durstewitz-Rattmannsdorf, containing 45% water, is treated with 50 parts. wag ** washes out. After making 200 parts by weight of of water and neutralization with sodium liquor, 6.7 pts. wt. sodium liquor by 36 ° Bi, as well as 10 parts. wt. of sodium sulphite and boil for an hour. With the help of fusing after several days of quiet standing, you get a quite transparent coat, into which chlorine is introduced until it shows slightly acidic reaction. Adding gradually, with further chlorination, 67 parts. wt. soda liquor, the degree of acidity of the silt is measured in such a way that it has a constant weak reaction. In addition, considerable amounts of carbonic acid are released. After the addition of all the sodium hydroxide solution, the chlorine was passed through until it had been absorbed in a total amount of 36 parts. by weight, a red-brown slurry is formed. After draining and drying at a temperature of 56 ° and a pressure of 12 mm, 58 parts are trimmed. wt. a brown powder which is soluble in warm water to give an almost clear solution and has the ability to lose gelatine with a light brown tinge. After dissolving in 94% alcohol once, desaturating and evaporating the solvent, a dark brown powder is obtained which dissolves completely in water, showing a congo blue reaction. Chlorine is introduced into 250 cm 3 of an alkaline aqueous solution of chlorinated peat, containing 88 g of dry substance, until the solution shows a weak acid reaction on a litmus paper. The addition of 20 cc of 33% sodium hydroxide is then further chlorinated, while the addition of the sodium hydroxide is adjusted so that a weak acid remains, which can be seen by the steady evolution of gas in the receiver. The product falls out as the chlorine continues to flow through. After introducing 19 g of chlorine, the mass reacts acidically with congo. It is unhooked and dried. This gives 34 g of a yellow-brown powder which gives an almost clear solution in congo blue water and which is capable of loosing the gelatine from the solutions. PL

Claims (1)

1. Patent claim. The method of obtaining water-soluble chlorine-containing products from ground coal or similar fossil materials, according to patent No. 9892, characterized by the fact that the said materials are treated with chlorine in the presence of such amounts of alkali that the environment retains a weak acid reaction under vacuum it became litmus and only towards the end was it more acid, or it showed a clearly acidic reaction when tested on horseback. I. G. Farbenin dustrie Aktiengesellschaft. Deputy: M. Skrzypkowski, patent attorney. Printing by L. Boguslawski and Ski, Warsaw. PL