摘要:
A method and apparatus for the combined operation of a furnace and an air distillation apparatus. The air distillation apparatus comprises at least one medium pressure column and a mixing column supplying oxygen to the furnace. The furnace and the distillation apparatus are supplied by a same blower, the mixing column receiving air compressed by a compressor coupled to a cryogenic turbine expanding with work a fluid from the distillation apparatus. The compressor/turbine assembly is coupled to and receives auxiliary power from an auxiliary power source.
摘要:
The combined plant comprises at least one furnace (FM) fed by a blowing machine (S), at least one air distillation device containing at least one medium-pressure column (MP) and a mixing column (CM) which has an oxygen outlet line (O) to feed the furnace (FM), the distillation device being fed via the blowing engine (S), at least the compressed air directed to the mixing column (CM) being given a positive pressure in at least one compressor-turbine group (C2-T2), the turbine (T2) of which is located in a circuit (Fi) for a pressurized fluid which is available at the plant site, for example steam or a gas originating from the furnace.
摘要:
A blast furnace (1) is supplied with a flow of optionally oxygen-enriched air coming from an isothermal compressor (3) or a (radial) centrifugal compressor (11).
摘要:
A process for oxygen-enriching a first feed gas stream be fed into a furnace by utilizing an oxygen-enriched gas stream from a second feed gas stream, wherein the first feed gas stream is compressed and then heated prior to injection into the furnace. The second feed gas stream is separated using an ion transport module containing an ion transport membrane having a retentate side and a permeate side to produce an oxygen-depleted gas stream on the retentate side and the pure oxygen gas stream or the oxygen-enriched gas stream on the permeate side. The pure oxygen gas stream or the oxygen-enriched gas stream is added to the first feed gas stream at any location before the first feed gas stream enters the furnace.
摘要:
A cryogenic air separation unit (ASU) provides flows of oxygen and nitrogen. The oxygen is used in a process such as COREX iron making or the partial oxidation of hydrocarbons, or in an oxycoal fuelled blast furnace, producing an off-gas containing useful components (H.sub.2 and CO) and carbon dioxide. The carbon dioxide is removed by pressure swing adsorption using nitrogen from the ASU as a regeneration gas and the purified off-gas becomes a feed gas to a further process such as production of iron by direct reduction of iron ore or the production of a NH.sub.3 making ammonia or is recycled into the first process as a feed gas.
摘要:
METHOD FOR BLOWING A REDUCING GAS INTO A BLAST FURNACE IN WHICH THE REDUCING GAS IS PRODUCED IN A REDUCING GAS GENERATOR, SUPPLYING GASEOUS MATERIALS INTO THE REDUCING GAS GENERATOR UNDER SPECIFIC CONDITIONS WITH THE TEMPERATURE OF THE PRODUCED GAS CONTROLLED AND THE TEMPERATURECONTROLLED GAS BEING BLOWN IN THE BLAST FURNACE.
摘要:
A control system for controlling the content of one fluid in another fluid. The flow quantity of the mixture of the two fluids is measured and the content of the one fluid in the other fluid is also measured. An electronic computer is used to control the quantity of the one fluid which is to be added to the mixture in order to maintain the content of the one fluid in the mixture at a predetermined value.