RU2215018C2 - Device for reduction of toxic emissions at discharge of coke from horizontal coke furnaces - Google Patents

Abstract

FIELD: coke and chemical industry; reduction of toxic emissions at discharge of coke from horizontal coke furnaces. SUBSTANCE: proposed device includes coke car movable along coke side and shelter connected with dust and gas collection system and made in form of diffuser with horizontal partitions located in lower end covering upper part of coke carrying car; mounted in upper end of shelter is collector which is connected with dust and gas collection system; mounted over perimeter of adjoining of shelter to walls of car and coke guide are horizontal and vertical suction air ducts; horizontal suction air ducts located along sides of coke car are made in form of air intakes of smooth suction and vertical air ducts located along side walls of coke guide are made as air intakes of variable flow rate in suction slotted hole. EFFECT: enhanced efficiency of dust and gas collection; reduced usage of metals; low cost. 3 dwg

Description

 The invention relates to the coke industry and can be used to reduce emissions of harmful substances in the production of coke from horizontal coke ovens.

 Known devices for dedusting the issuance of coke from horizontal coke ovens that use a capacious umbrella connected to various kinds of suction devices [1, 2].

 These designs have a common drawback, namely, that intense heat exchange between air and the incident coke stream occurs in a large volume, resulting in a large amount of heated dust-gas mixture. To remove it, large capacities and dimensions of suction and dust removal systems are required.

 Closest to the claimed combination of features is a device for reducing emissions of harmful substances when coke is dispensed from horizontal coke ovens through a coke guide to coke cars, installed to move along the coke side of the coke car and connected to a dust removal system. The device comprises an inner shelter and an outer casing, forming a slit hole along the upper edges of the walls of the coke oven car, through which the dusty gas-air mixture is removed. Then the mixture passes through the capacious space between the shelter and the outer casing, entering the dust and gas removal systems [3].

 The disadvantages of the described device include the low efficiency of dust and gas removal in the area adjacent to the coke guide, as well as its high metal consumption.

 The task of the invention is to increase the efficiency of dust removal, reducing metal consumption and the cost of the device.

 To solve the problem in a device for reducing emissions of harmful substances when coke is discharged from horizontal coke ovens through a coke guide to coke cars, it contains a shelter installed with the possibility of moving along the coke side and connected to a dust and gas removal system in the form of a diffuser with a lower end horizontal partitions, overlapping the upper part of the loaded coke wagon, according to the invention in the upper end of the shelter installed a collector connected to the dust and gas removal system, and horizontal and vertical suction ducts connected to the collector along the perimeter of the abutment of the shelter to the walls of the car and the coke guide are installed, while the horizontal suction ducts located along the sides of the coke carriage are made as air intake uniform suction devices, and air ducts located along the side walls of the coke guide are made as air intake devices of variable size progress in the suction slot opening.

 The analysis of the prior art did not allow to identify an analogue characterized by features identical to all the essential features of the proposed solution, i.e. The solution meets the requirement of novelty.

 No signs are also identified that are distinctive in the claimed solution, i.e. It meets the requirement of inventive step.

 The essence of the invention is illustrated by drawings, where figure 1 shows a General view of the device; figure 2 is a section aa in figure 1; figure 3 - axonometric diagram of the location of the suction ducts.

 A device for reducing emissions of coke from coke ovens contains a shelter 1 with horizontal partitions 2 and a collector 3, horizontal 4 and vertical 5 intake ducts, connecting ducts 6, pipe 7 for connecting the collector 3 to the dust removal system.

 The device operates as follows. When unloading coke from the coke oven into the coke oven car 8 through the coke-guiding 9, the dust-gas mixture is pushed out of the coke carriage 8 through the gaps between the sides of the car and horizontal partitions 2, as well as into the shelter cavity 1. In the shelter 1, the mixture is additionally heated from the falling coke and shelter walls 1 and under the influence of thermal pressure moves up. In this case, the temperature of the mixture and pressure increase along the height of the shelter 1. The intensity of knocking out a dusty gas-air mixture through leaks in the zone of abutment of the shelter 1 to the walls of the coke guide 9 increases in height, therefore, the vertical suction ducts 5 are made of variable flow rate in the suction slot in height, which ensures effective dust and gas collection. The mixture is knocked out through leaks along the sides of the car evenly, so the horizontal suction ducts 4 are made as air intake devices of uniform suction. From the suction ducts 4, 5 through the connecting ducts 6, the dust-gas mixture enters the collector 3 and then through the pipe 7 to the dust and gas removal system.

 The use of the claimed invention more than 2 times reduces the metal consumption, therefore, the cost of the device with its high environmental friendliness.

LITERATURE
1. Auth. St. 1535839, MKI C 10 V 33/10. A device for the removal of gases when unloading coke from a coke oven. / A.I. Nikitin, A.M. Dotsenko, A.T. Pozhidaev, V.I. Anichinidr. (USSR) - 4440932 / 23-26. Claimed on 04.25.88. Publ. 01/15/90. Bull. 2.

 2. Auth. St. USSR 1161533, MKI C 10 V 33/00. A device for the removal of gases when unloading coke from a coke oven. / C.V. Stepko (USSR) 3450221 / 23-26. Declared 06/08/82. Publ. 06/15/85.

 3. RF patent 2088629, MKI C 10 V 33/00. A device for reducing emissions of harmful substances during the production of coke from horizontal coke ovens. / V.D. Olifer, V.T. Stefanenko (RF) 95-100109. Declared January 5, 1995. Publ. 08/27/95. Bull. 24 (prototype).

Claims (1)

 A device for reducing emissions of harmful substances when coke is discharged from horizontal coke ovens through a coke guide to coke cars, containing a shelter installed with the possibility of moving along the coke side and connected to the dust and gas removal system, made in the form of a diffuser with horizontal partitions located at the lower end that overlap the upper part of the loaded coke carriage, characterized in that a collector connected to the systems is installed in the upper end of the shelter dust and gas removal, and along the perimeter of the abutment of the shelter to the walls of the car and the coke guide horizontal and vertical suction ducts connected to the collector are installed, while the horizontal suction ducts located along the sides of the coke carriage are made as air intake devices along the suction, and the vertical suction ducts walls of the coke guide, made as air intake devices of variable flow rate in the suction slotted hole STI.

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