PL26420B1 - - Google Patents

Description

It is known that during the factory processing of organic materials containing protein bodies, for example, the burning of molasses decoctions or their distillation, the carbonization of blood and animal remains, and, in general, each processing at elevated temperatures, these bodies release volatile substances. in them, and partly by-products, which when escaping from the chimney pollute the air and become a plague in the areas where such factory processing is carried out. Attempts have been made in various ways to free the fumes and gases escaping from the above-mentioned fabrications from those very harmful volatile substances. Attempts have been made to capture the organic bases in the gases with acids, or to remove the odor of gases by oxidation, etc. In practice, all these methods do not give the desired results. It has now been found that volatile substances that are harmful to the environment are to remove a significant part in a simple manner, for example by moistening (by sprinkling) water and cooling the gases and vapors escaping during processing with aqueous solutions or suspensions of hygroscopic salts or oxides, for example with a solution of magnesium chloride, chloride calcium or calcium milk or solutions of certain aluminum salts or iron. Under these conditions, the volatile substances of the vapors are retained in an aqueous solution or suspended in a suspension. The present method not only frees the environment from harmful vapors, but can also be used to obtain substances that are present in the vapors and gases. These substances can be separated from the solutions by the use of reagents that bind organic bases which are found in the flue gas in the form of amines. Cyan binders can also be added to the scrubbing solutions, for example zinc salts, aluminum , iron and heavy metals or their oxides. Volatile substances can finally be captured by distilling the solutions. Example I. Animal remains, such as dried blood and other animal debris, are subjected to dry distillation in a flame-retardant glass flask, and the resulting vapors condense by passing them through coolers . In order to retain non-condensable volatile substances with an unpleasant odor, non-condensable gases are passed through the scrubbers with a calcium chloride solution. The calcium hydroxide suspension thus formed increases the entrapment of the odorous gases considerably. Instead of calcium chloride, you can use magnesium chloride, iron chloride or milk of lime. Example II. The molasses decoction, at a concentration of about 15 ° B, is burnt in a furnace after it is concentrated to obtain the potassium. The incoming flue gas is led through the chamber, and cooled cold water is passed through coils or another set of pipes placed in the chamber. At the same time, the cooled gases are sprayed, for example by spraying a stream of water in a countercurrent, which causes the gases to be trapped in the downstream rinses with a solution of calcium chloride, magnesium chloride or iron chloride, PL

Claims (1)

1. Patent claim. A method of removing poisonous gases with an unpleasant odor, formed during the processing of organic bodies of plant or animal origin, characterized by the fact that steam and gases escaping from furnaces or boilers are sprinkled with water and quenched with aqueous solutions or suspensions of salts or hygroscopic oxides. Stanislaw Kielbasinski. Printing by L. Boguslawski and Ski, Warsaw. PL