Steel slag baking-free brick

The invention relates to a steel slag free sintering brick, belonging to the recycle technical field of steel slag, wherein the materials of the free sintering brick are steel slag stand, steel slag powder, blast furnace slag and lime, and the production method of the steel slag free sintering brick comprises adding water with weighted materials, mixing, pressing and shaping via a brick press, maintaining and aging to obtain final product of steel slag free sintering brick. The inventionc can shorten production period, eliminate sintering, eliminate heat energy, save time, improve yield, reduce cost and release the environment pollution of steel slag and greenhouse effect of carbon dioxide.

Steel slag baking-free brick

The invention relates to a steel slag free sintering brick, belonging to the recycle technical field of steel slag, wherein the materials of the free sintering brick are steel slag stand, steel slag powder, blast furnace slag and lime, and the production method of the steel slag free sintering brick comprises adding water with weighted materials, mixing, pressing and shaping via a brick press, maintaining and aging to obtain final product of steel slag free sintering brick. The inventionc can shorten production period, eliminate sintering, eliminate heat energy, save time, improve yield, reduce cost and release the environment pollution of steel slag and greenhouse effect of carbon dioxide.

Multi-effect energy-saving ammonia recovery process and device

The invention discloses multi-effect energy-saving ammonia recovery process and device, in particular to energy-saving process and device for recovering ammonia from ammonia-containing wastewater, belonging to the technical filed of chemical engineering. The device comprises 2-3 groups of heaters and ammonia separating towers which operate under different pressures. The process comprises the following steps of: firstly, adding the ammonia-containing wastewater into the first-effect ammonia separating tower under higher pressure, and heating the first-effect ammonia separating tower by using afirst-effect heater which recovers the waste heat of industrial waste gas; continuously adding the liquid phase of the first-effect ammonia separating tower which recovers a part of ammonia gas into the second-effect ammonia separating tower under reduced pressure, and heating the second-effect ammonia separating tower in the second-effect heater by using the ammonia gas at the top of the first-effect ...

Multi-effect energy-saving ammonia recovery process and device

The invention discloses multi-effect energy-saving ammonia recovery process and device, in particular to energy-saving process and device for recovering ammonia from ammonia-containing wastewater, belonging to the technical filed of chemical engineering. The device comprises 2-3 groups of heaters and ammonia separating towers which operate under different pressures. The process comprises the following steps of: firstly, adding the ammonia-containing wastewater into the first-effect ammonia separating tower under higher pressure, and heating the first-effect ammonia separating tower by using a first-effect heater which recovers the waste heat of industrial waste gas; continuously adding the liquid phase of the first-effect ammonia separating tower which recovers a part of ammonia gas into the second-effect ammonia separating tower under reduced pressure, and heating the second-effect ammonia separating tower in the second-effect heater by using the ammonia gas at the top of the first-effect ...

Residual heat utilizing technology of coke oven crude gas

The invention provides a residual heat utilizing technology of coke oven crude gas, relating to a residual heat utilizing method and device of coke oven crude gas for a top-charged coke oven or a stamp-charged coke oven. The invention adopts the technical scheme that high-temperature crude gas in each charring chamber of the coke oven is directly led out through a three-way tube at the upper part of a rising tube, the crude gas in each charring chamber is led into a collection tube through the connection of a connecting tube and the collection tube without spraying ammonia water and then enters a residual heat boiler for heat exchange; the crude gas after heat exchange is sent to a production recovering system after being cooled by an ammonia water sprayer. The invention can effectively utilize a great quantity of residual heat of the high-temperature crude gas of the coke oven with the residual heat utilization rate of about 60% to 80% and generate favorable economic benefit.

Residual heat utilizing technology of coke oven crude gas

The invention provides a residual heat utilizing technology of coke oven crude gas, relating to a residual heat utilizing method and device of coke oven crude gas for a top-charged coke oven or a stamp-charged coke oven. The invention adopts the technical scheme that high-temperature crude gas in each charring chamber of the coke oven is directly led out through a three-way tube at the upper partof a rising tube, the crude gas in each charring chamber is led into a collection tube through the connection of a connecting tube and the collection tube without spraying ammonia water and then enters a residual heat boiler for heat exchange; the crude gas after heat exchange is sent to a production recovering system after being cooled by an ammonia water sprayer. The invention can effectively utilize a great quantity of residual heat of the high-temperature crude gas of the coke oven with the residual heat utilization rate of about 60% to 80% and generate favorable economic benefit.

Rich oil de-benzene process

The invention discloses a rich oil de-benzene process, comprising the following steps: the rich oil from the final cooling benzol scrubbing unit is sent into a gas and oil exchanger to heat, then the oil is sent into a heat exchanger between lean oil and rich-oil to heat; the rich oil is heated to 160-180 DEG C and introduced to a de-benzene pipe tower type furnace to further heat to 190-200 DEG C, then the oil is sent to a de-benzene tower to remove benzene by distillation; the light benzene, fine heavy benzene and naphthalene oil produced by distillation de-benzene are extracted respectively from the overhead and side line of the de-benzene tower; after removing benzene, the rich oil is converted to lean oil and then sent to the tower pot; the first part of the lean oil in the tower pot is sent to the de-benzene pipe tower type furnace to heat and then sent back to the de-benzene tower from the upside of the tower pot of the de-benzene tower to provide energy for the distillation of rich ...

Multiple-stage combination tower type drying apparatus and drying process

Automatic pressure regulating method and device for coke oven chamber

The invention relates to an automatic pressure regulating method and a device for a coke oven chamber, which is characterized in that the lower end of a cylinder of a bridge pipe water sealing valve device is an inclined surface, the inclined surface is formed by inclining downwards towards the nearest (farthest) end from the farthest (nearest) end of a water sealing valve disc shaft of the bridge pipe water sealing valve device in a mode of oblique lines with same slope or broken lines and curve contours with different slopes, rotation of the water sealing valve disc shaft enables one end of the water sealing valve disc shaft closing to the inclined surface to firstly sink into a water sealing valve disc, a gas channel is formed between the upper end of the inclined surface and the water sealing valve disc, and size of gas flow is controlled by the opening size of the water sealing valve disc. The device is used for controlling the pressure of single coke oven chamber, realizes no overflow ...

Rich oil de-benzene process

The invention discloses a rich oil de-benzene process, comprising the following steps: the rich oil from the final cooling benzol scrubbing unit is sent into a gas and oil exchanger to heat, then the oil is sent into a heat exchanger between lean oil and rich-oil to heat; the rich oil is heated to 160-180 DEG C and introduced to a de-benzene pipe tower type furnace to further heat to 190-200 DEG C, then the oil is sent to a de-benzene tower to remove benzene by distillation; the light benzene, fine heavy benzene and naphthalene oil produced by distillation de-benzene are extracted respectively from the overhead and side line of the de-benzene tower; after removing benzene, the rich oil is converted to lean oil and then sent to the tower pot; the first part of the lean oil in the tower potis sent to the de-benzene pipe tower type furnace to heat and then sent back to the de-benzene tower from the upside of the tower pot of the de-benzene tower to provide energy for the distillation ofrich ...

Technique for heating liquid steel scoria

The invention discloses a thermal-braise technique for liquid steel slag, which pours liquid steel slag into a thermal-braise tank directly for treatment, and the specific working procedure is: extending the bottom of the thermal-braise tank equally with dry steel slag with the thickness of 190 to 230 mm, pouring the produced liquid steel slag while making steel into the thermal-braise tank, the amount of the poured liquid steel slag is 10 to 12 percent of the gross cubage of the thermal-braise tank; spraying water into the thermal-braise tank immediately after the liquid steel is poured into the tank to ensure the surface of the liquid steel slag to form crust immediately; the manipulator looses the crusted steel slag until the liquid slag appears, and then restarts the water-spraying procedure to loose the steel slag; the final part is temperature-reducing procedure, and opens the cover to discharge the slag after aerating for 25 to 35 minutes. The technique of the invention finishes ...

Process for producing steel scoria unburned brick

The invention discloses a making method of steel slag non-burnt brick, which belongs to steel slag reclamation field; wherein, the technical proposal resolves the problems of the prior steel slag non-burnt brick of requiring maintenance time, requiring pressure in the process of aging, high equipment cost, requiring handling and other multiple operation steps, large amount of labor, and high cost of man power and material resources. The making method of steel slag non-burnt brick is characterized in that (1) at least two materials from steel slag sand, steel slag powder, blast furnace slag and lime are weighed and fed into the blender, (2) water is added and the materials are stirred evenly, (3) the materials are fed into the brick molding press to press and form, (4) the formed brick is processed aging at the atmospheric pressure directly, (5) the industrial exhaust gas comprising CO2 is injected in the process of aging, and (6) the finished steel slag non-burnt brick is acquired as the ...

Process for producing steel scoria unburned brick

The invention discloses a making method of steel slag non-burnt brick, which belongs to steel slag reclamation field; wherein, the technical proposal resolves the problems of the prior steel slag non-burnt brick of requiring maintenance time, requiring pressure in the process of aging, high equipment cost, requiring handling and other multiple operation steps, large amount of labor, and high cost of man power and material resources. The making method of steel slag non-burnt brick is characterized in that (1) at least two materials from steel slag sand, steel slag powder, blast furnace slag and lime are weighed and fed into the blender, (2) water is added and the materials are stirred evenly, (3) the materials are fed into the brick molding press to press and form, (4) the formed brick is processed aging at the atmospheric pressure directly, (5) the industrial exhaust gas comprising CO2 is injected in the process of aging, and (6) the finished steel slag non-burnt brick is acquired as the ...