摘要:
The present invention provides a method and an apparatus for predicting and calculating an amount of harmful oxide such as NOx contained in an exhaust gas from a reference concentration of harmful oxide, which is previously determined by a type of fuel supplied to a fluidized bed combustor, an amount of change of an air ratio and an amount of change of a gas residence time to the conditions of a specific air ratio and gas residence time in the combustor, and injecting a treatment agent such as NH.sub.3 in an amount optimum to the predicted amount into an exhaust gas. With this arrangement, an amount of harmful oxide in the exhaust gas can be securely lowered to a target value.
摘要:
A method of and apparatus for detecting an abnormality of a fluidized bed boiler is characterized in that an abnormality of the fluidized bed boiler is detected on the basis of a physical quantity related to a condition change of a gas existing in a space defined by a pressure vessel and the fluidized bed boiler accommodated within the pressure vessel.
摘要:
In a reactor for cracking heavy hydrocarbon oil through a fluidized bed of the particles of natural ores, coke-like materials are deposited on a top of the reactor or pipe inside surfaces of a transfer line from the reactor to a scrubber. To effectively scour out the deposited coke-like materials, particles of natural ores having a mean diameter of a few hundred .mu.m is made to be contained in an effluent gas from the top of reactor, passing through the transfer line at a concentration of 1 to 40 g/m.sup.3. The particles of natural ores have a good effect of scouring out the deposited coke-like materials and can keep the transfer line efficiently clean even with a small amount of the particles of natural ores, decreasing a pressure drop in the transfer line.
摘要翻译:在通过天然矿石颗粒的流化床裂解重质烃油的反应器中,焦炭状材料沉积在反应器的顶部或从反应器到洗涤器的输送管线的内表面中。 为了有效地冲出沉积的焦炭状材料,使平均直径为几百微米的天然矿石颗粒被包含在来自反应器顶部的流出气体中,其浓度为1 至40g / m 3。 天然矿石颗粒具有很好的清除沉积的焦炭状物质的效果,并且即使用少量的天然矿石颗粒也能有效地清洁输送管线,从而降低输送管线中的压降。
摘要:
The present invention provides a desulfurizing agent comprising a porous oxide carrier, at least one of molybdenum oxide and tungsten oxide as a first component, supported on the carrier, and at least one of manganese oxide, cobalt oxide and nickel oxide as a second component, supported mainly on the surface of the first component. In a coal gasification system using the present desulfurizing agent and a power generation system using the purified gas therefrom, a reduction column for converting a portion of sulfur dioxide in the regenerated gas to hydrogen sulfide as a pretreatment means to a Claus reaction column can be eliminated when the desulfurizing agent is regenerated. Furthermore, in the present invention a desulfurizing agent capable of reacting with hydrogen sulfide to form a solid sulfur compound at a high temperature is supplied to a gasification furnace and the resulting sulfur compound is withdrawn from the gasification furnace as molten slag together with ashes of fine coal powder, where desulfurization can be attained without a Claus reaction column and without a reduction column. Such desulfurization is likewise applicable to a coal gasification system and a power generation system based on the coal gasification.
摘要:
A process for gasifying coal comprising supplying to an upper portion of an entrained flow gasifier a coal powder having a particle size of 100 .mu.m or less whereby gasification is conducted at 900.degree. C. or higher in the absence of oxygen, supplying a coal powder including coarser particles and oxygen in an amount from that necessary for complete combustion of coal to a half of said amount to a lower portion of the gasifier whereby gasification is conducted at a melting point of coal ash or higher, and leading the gases produced at the lower portion of the gasifier directly to the upper portion of the gasifier, does not require recycle of char to the gasifier and gives a high gasification efficiency by passing coal powder through the gasifier only one time.
摘要:
In a reactor for cracking heavy hydrocarbon oil through a fluidized bed of particles of natural ores, coke-like materials are deposited on a top of the reactor or pipe inside surfaces of a transfer line from the reactor to a scrubber. To effectively scour out the deposited coke-like materials, particles of natural ores having a mean diameter of a few hundred .mu.m is made to be contained in an effluent gas from the top of reactor, passing through the transfer line at a concentration of 1 to 40 g/m.sup.3. The particles of natural ores have a good effect of scouring out the deposited coke-like materials and can keep the transfer line efficiently clean even with a small amount of the particles of natural ores, decreasing a pressure drop in the transfer line.
摘要翻译:在通过天然矿石颗粒的流化床裂解重质烃油的反应器中,焦炭状材料沉积在反应器的顶部或从反应器到洗涤器的输送管线的内表面中。 为了有效地冲出沉积的焦炭状材料,使平均直径为几百微米的天然矿石颗粒被包含在来自反应器顶部的流出气体中,其浓度为1 至40g / m 3。 天然矿石颗粒具有很好的清除沉积的焦炭状物质的效果,并且即使用少量的天然矿石颗粒也能有效地清洁输送管线,从而降低输送管线中的压降。
摘要:
The reforming of heavy oil with supercritical water or subcritical water is accomplished by mixing together supercriticai water, heavy oil, and oxidizing agent, thereby oxidizing vanadium in heavy oil with the oxidizing agent at the time of treatment with supercritical water and separate vanadium oxide. The separated vanadium oxide is removed by the scavenger after treatment with supercritical water. In this way it is possible to solve the long-standing problem with corrosion of turbine blades by vanadium which arises when heavy oil is used as gas turbine fuel.
摘要:
The reforming of heavy oil with supercritical water or subcritical water is accomplished by mixing together supercritical water, heavy oil, and oxidizing agent, thereby oxidizing vanadium in heavy oil with the oxidizing agent at the time of treatment with supercritical water and separate vanadium oxide. The separated vanadium oxide is removed by the scavenger after treatment with supercritical water. In this way it is possible to solve the long-standing problem with corrosion of turbine blades by vanadium which arises when heavy oil is used as gas turbine fuel.
摘要:
The reforming of heavy oil with supercritical water or subcritical water is accomplished by mixing together supercritical water, heavy oil, and oxidizing agent, thereby oxidizing vanadium in heavy oil with the oxidizing agent at the time of treatment with supercritical water and separate vanadium oxide. The separated vanadium oxide is removed by the scavenger after treatment with supercritical water. In this way it is possible to solve the long-standing problem with corrosion of turbine blades by vanadium which arises when heavy oil is used as gas turbine fuel.
摘要:
The purpose of the invention is to provide a heavy oil reforming method which reforms a heavy oil to give a fuel suitable for a gas turbine, eliminates sulfur and vanadium, i.e., harmful components, from a heavy oil, and enables almost all the hydrocarbons in the heavy oil to be used in gas turbine combustion; an apparatus therefor; and a gas turbine power generation system using the reformed heavy oil as fuel. This method comprises reacting a heavy oil with supercritical water and then with a scavenger for sulfur and vanadium to eliminate sulfur and vanadium from the heavy oil. The apparatus for reforming a heavy oil is equipped with a reactor for reacting a heavy oil with supercritical water, a scavenging apparatus filled with a scavenger for scavenging sulfur and vanadium in the heavy oil, and a connecting pipe for connecting the reactor and the scavenging apparatus. The gas turbine power generation system has a burner for burning a heavy oil reformed with the reforming apparatus and a gas turbine driven by a combustion gas generated by the burner.