SU11102A1 - Dry gas cleaner from dust - Google Patents

Description

The proposed dry gas scrubber is a compound of an ordinary dry scrubber and a heat exchanger in one device and is designed to remove dust from the blinker gas exiting the high temperature from the blast furnace. The heat that is partially lost by the gas to be purified is transferred to a cooling gas, air or water, which is used in the furnaces of boilers, fiery and other furnaces, or when feeding boilers with water. In the proposed purifier, it is proposed to use as a coolant gas as a cooling gas for feeding the furnace of the stoves.

In the schematic drawing of FIG. 1 shows a vertical section of the cleaner along the line VI-VII in FIG. 2; FIG. 2 is a section through a cleaner along line I-II-III in FIG. 1 (left side of the figure) and along the line IV-V in FIG. 1 (the right part of the figure); FIG. 3 is a cross-section of the crankshaft.

The proposed dry gas strip cleaner consists of several large A and several small B sedimentation chambers.

consistently communicating with each other. The gas to be purified enters the purifier through two tubes a, opening into the small chamber B, rises upward along it, passes into the small chamber B separated from the first iron partition, lowers along it and enters the large chamber A. The further path of the gas to be purified passes through chambers A, B, A, 5 A. From chamber A, gas is withdrawn by two pipes b, which are connected above the apparatus into one pipe b. The gas, the transition from small chambers to large chambers, reduces its speed and changes its direction, due to which the dust particles carried by the gas are deposited in the bins C, C and adjacent to the bottom cleaner. Each of the bins is closed at the bottom with a cone, pressed against its seat by a weight d. Emptying the C, C and C bins from the accumulated dust is done by lowering the cones by hand. At the same time, dust is poured into open-top wagons, which can be moved along the railway track laid under the appliance.

The path of the cooling (cleaned) gas, IT, through hollow re-diffusers D between large and small chambers, partly in an elliptical section, to tubes E connecting these partitions. To increase the heating surface of the heat exchanger at the front of the device, in the chambers B and B there are installed elbows g through which the cooling gas flows at the end of its path in the cleaner. The cooling (heated) gas is supplied to the purifier by the pipe e and through a number of pipes p enters the first partition D, rises along it and enters the row of pipes E. The further way of its following lies through hollow partitions and tubes: D, «, /),, Z)% D, E, Z), E and bent pipes g. The number of elbows g is 20 and the tubes E in each chamber are 11. The ends of the branches of the elbows gi, through which the cooling gas descends, abut against the collector g of the preheated gas, located outside the purifier below the bottom /, bounding the chamber B from below. Collector i is mounted on two brackets, riveted to two columns supporting the cleaner. Thus, the gas being cleaned, washing the outer surface of the walls of the tubes and partitions, gives off some of its heat to the colder (heated) gas flowing in them. On a large proportion of the heating surface of the heat exchanger, the principle of counter flow is observed. Moving the cleaned and heated gas inside the device is carried out by fans.

The flat walls of the scrubber rivet sheet iron. Rivets are made in the butt with one lining; As a lining, a T-iron is taken, perpendicular to the plane of the walls and increasing its rigidity with its edge. Conjugation of pipes with flat walls and between them is carried out with the help of flanges forged from angular iron.

Tightness of the design is achieved by staking all the seams.

The side walls of the partitions are riveted across the entire width of the channel K, as a result of which, on the one hand, the partitions are isolated from the chambers of the A & B cleaner, and on the other, the stiffness of the partitions inside the device increases. In case of periodic cleaning of the heat exchanger tubes, manholes are arranged. For the convenience of cleaning the tubes E, E and E from dust deposited from the heated gas, the partitions D, D and Z) are broad in their upper part. The lashes t, done in the side walls of the cleaner, serve to clean the vertical partitions.

The bottom / X1meoy B is inclined to the horizon at an angle of 45 °, sufficient to dump the accumulated on it dust deposited from the gas to be purified as it enters the purifier. The front wall of the latter is equipped with hatches n with hinged covers. The opening of the hatches and the emptying of the chamber B from dust is done by hand. Area F, laid across the entire width of the cleaner, facilitates access to the hatches of the section. located in a vertical plane. Crankshafts g are made of rectangular section and riveted from iron sheets and strips (Fig. 3).

The whole structure was resting on an I-beam and channel system riveted to the side walls of the cleaner, supported by eight columns.

The subject of the patent.

A dry gas purifier of dust, connected to the heat exchanger and consisting of dust-collecting chambers separated by partitions that do not come alternately to the bottom and the roof, characterized in that, in order to cool the hot gas to be cleaned, the partitions are made; hollow and so installed in medium dust precipitation chambers so that small dust precipitation chambers are formed between them, and to communicate hollow cooling walls with each other, elliptical sections of tube E are used to pass the cooling gas or liquid in the opposite direction to the gas to be cleaned designed crankshaft pipe g and collector.