초록 ▼

The emission of solid particles during the discharging of a horizontal coking oven or furnace is substantially reduced or eliminated. For this purpose the hot air and gas convection flow which carries the solid particles substantially vertically upwardly is exposed to a shower or spray of water drop

The emission of solid particles during the discharging of a horizontal coking oven or furnace is substantially reduced or eliminated. For this purpose the hot air and gas convection flow which carries the solid particles substantially vertically upwardly is exposed to a shower or spray of water drops which are directed substantially horizontally into the upward convection flow. The volume, surface tension, density and speed of the water drops are coordinated relative to one another so that the water drops are loaded by taking up the solid particles whereupon the loaded drops sink down in a countercurrent flow to the upward convection flow. The solid particles carrying the water drops are removed from the convection flow by a plurality of baffles arranged in a chimney or stack in a staggered relationship so that the upward convection flow can pass through between adjacent baffles which are inclined toward respective collecting channels.

대표청구항 ▼

A method for reducing the emission of solid particles from a chimney forming a channel in which an air, gas, and solid particle mixture rises substantially vertically due to a heat convection current of given upward draft resulting from the discharge and collapse of a batch of hot coke from a horizo

A method for reducing the emission of solid particles from a chimney forming a channel in which an air, gas, and solid particle mixture rises substantially vertically due to a heat convection current of given upward draft resulting from the discharge and collapse of a batch of hot coke from a horizontal coking chamber, comprising the following steps: avoiding any quenching of the hot coke being discharged for permitting the development of said heat convection current without any steam in said mixture, then exposing the substantially vertically rising mixture of hot air, gas and solid particles to a shower of scrubbing liquid drops which are directed substantially horizontally into the rising mixture again without causing any quenching of the coke being discharged, adjusting in combination the initial volume of the individual liquid drops, the initial surface tension of the individual liquid drops, the initial density of the individual liquid drops, and their initial substantially horizontal speed relative to each other so that the scrubbing liquid drops remain suspended in said given upward convection current draft for loading with solid particles until the loaded drops become too heavy for remaining suspended in the upward convection current draft and sink downwardly solely by gravity in countercurrent flow to the upward draft of the convection current, collecting the liquid drops laden with solid particles below said shower without contacting said hot coke for preventing substantially any steam generation to maintain said upward convection current draft undisturbed, and discharging the collected liquid without condensation from the chimney by preventing a direct contact between the loaded drops and the coke as the latter is being pressed out of the coking chamber.