SU68436A1 - Pressure Boiler - Google Patents

Description

The invention relates to a device for gypsum cooking under pressure and provides for the possibility of continuously conducting the process of obtaining high strength semi-aquatic gypsum.

The existing methods of gypsum cooking are designed for the use of a boiler with periodic loading and unloading, for example, a damper of Shklra and Sadovsky, a self-steamer Skramtaeva and Bulychev, an autoclave Randall and Dale. The work of a periodically operating apparatus has a number of flaws, such as:

1) downtime during loading and unloading periods;

2) the need to operate with large portions of the material to load the boiler or autoclave;

3) instability of the mode of operation due to frequent process changes: steaming, drying, re-steaming, etc.

The proposed design of the boiler (see drawing) eliminates the above disadvantages.

Boiler 7 has the shape of a hopper with an outlet opening below and is walled in a furnace with a furnace 3. Boiler 7 is loaded through a double valve 2 continuously, in small portions. The finished product, i.e., the steamed crushed stone of gypsum, flows through the inclined channel 4 into an elevator 5 located in the barometric tube 7 which communicates with the boiler. The pipe is filled with water, the column of which has the height necessary to maintain the lowest pressure in the boiler. When there is a shortage of water, it is pumped into the system using a conventional pump, with the excess water flowing through the drain connection in the barometric tube. The finished product is then picked up by an elevator and taken up to the top, where it enters a continuously operating dryer 6.

According to the calculations of the author, the boiler with a capacity of 24 tons per day, at the time of parsing at 5 o'clock, is characterized by the following data: boiler volume 6.5 m, elevator height

571

15 m, the speed of movement of the elevator belt is 1 MJccK, - time of removal of gravel 15 sec. number of buckets in the elevator 2 pcs. on I rr. m, the loading of each bucket is 140-170 g, the diameter of the elevator body is 350 mm.

Subject invention

A gypsum cauldron is characterized in that

It is equipped with a discharge elevator 5 located in a barometric tube 7 filled with water and connected to the boiler outlet orifice to maintain the necessary pressure and the possibility of continuously conducting the cooking process.