CN103421544A - Gasification and generation system of carbon fuel - Google Patents

Abstract

The invention provides a gasification and generation system of a carbon fuel, which can raises power generation efficiency while arranging a desulfurizer using an absorption liquid between a gasification furnace and a gas turbine. The gasification and generation system comprises: a gasification furnace for manufacturing and generating gases from the carbon fuel; a thermal recovery part of a thermal gasification furnace for recovering the generated gas; cooling tower for cooling the generated gas; a converter reactor to react carbonic oxide with vapor in the generated gas to generate carbon dioxide and hydrogen; an absorption tower to make the absorption liquid absorb hydrogen sulfide in the generated gas which does not go through converter reactor; the gas turbine for introducing the generated gas with hydrogen sulfide removed as a fuel to generate power; a water recoverer which is arranged in a waste gas flow path of the gas turbine for recovering water by cooling waste gas; and a humidification tower for humidifying air by spraying the water recovered in the water recoverer to burning air for the gas turbine. Furthermore, a cooling water supply system is arranged.

Description

Carbon is the gasification power generation system of fuel

Technical field

The present invention relates to the carbon of coal, biological substance, heavy oil etc. is that fuel gasification and generating be take the gas that carbon monoxide and hydrogen is main component, and is the gasification power generation system of fuel with this generation gas carbon generated electricity in internal combustion turbine that acts as a fuel.

Background technology

As take the power generation system that Sweet natural gas is fuel, existence is the perfect combustion Sweet natural gas in boiler (boiler), utilize with the indirect heat exchange of gained combustion gases and manufacture water vapor, and the system of being generated electricity by steam turbine, and in gas turbine burner gas-firing, and utilize combustion gases directly to drive the method for internal combustion turbine.

The temperature of the water vapor obtained by the indirect heat exchange of using boiler is the highest is also 700 ℃ of left and right, on the other hand, in gas turbine burner, the combustion gases of gained can be its high temperature more than 2 times, and therefore, the possibility that the power generation system of use internal combustion turbine improves generating efficiency is large.

In using the power generation system of internal combustion turbine, by and drive the indirect heat exchange between the waste gas after internal combustion turbine to manufacture water vapor, utilize the water vapor of gained to drive steam turbine, and carry out compound power-generating, can realize high efficiency thus.

In addition, considered a kind of system, it does not use steam turbine, water is mixed with combustion air, indirect heat exchange between utilization and gas turbine exhaust makes the atmosphere temperature rising that contains this water, reclaim by gas turbine power generation the energy that gas turbine exhaust has, thus, do not use steam turbine also can realize the generating efficiency equal with compound power-generating.

This system is called as humid air turbine system (humid air turbine system), and the generating efficiency in partial load, higher than compound power-generating, in addition, can be carried out load than compound power-generating servo-actuated more at high speed.

By carbon such as coal, biological substances, be in the power generation system that acts as a fuel of fuel, it in vapourizing furnace, using carbon, is fuel gasification and as take the generation gas that carbon monoxide and hydrogen is main component, remove the particulate, the sulfide that generate in gas, can apply the power generation system of having used the internal combustion turbine the same with Sweet natural gas thus, also consider to carry out the system of compound power-generating, the system of being generated electricity by the internal combustion turbine that utilizes highly humid air by internal combustion turbine and steam turbine.

As above-mentioned, the generating efficiency of utilizing the internal combustion turbine of highly humid air to have in partial load is higher than compound power-generating, and the advantage that the load follow up speed is fast, but in the situation that be fuel gasification and as fuel, need to be converted on electric power and make an effort in the heating by vapourizing furnace by carbon.

Carbon is the thermal value that the 70-80% in the thermal value of fuel is converted into the combustiblecomponentss such as the carbon monoxide that generates in gas, hydrogen, and the 20-30% of described thermal value is converted into the sensible heat (1300 ℃ of left and right) that generates gas, therefore, in the situation that use compound power-generating, this sensible heat can be reclaimed as water vapor, and drive steam turbine and be converted to electric power.

On the other hand, in the situation that use utilizes the internal combustion turbine of highly humid air, owing to there is no steam turbine, therefore, even reclaimed as water vapor, can not be converted to electric power.

Therefore, for example in TOHKEMY 2001-115854 communique, disclose a kind of technology, it relates to by gas injection is liquid, becoming water vapor, the sensible heat that is water vapor by the thermal conversion of coal gas and latent heat, and be supplied to the gasifying electricity generation equipment of internal combustion turbine.

In this technology, while being provided with the wet desulfurizer that uses absorption liquid between vapourizing furnace and internal combustion turbine, until before wet desulfurizer, the temperature that generates gas must drop to approximately 40 ℃, therefore, generate subsidiary water vapor generation condensation in gas, can not by water vapor with transmission ofenergy to internal combustion turbine.

Therefore, in the impurity removing apparatus of mainly removing hydrogen sulfide be arranged between vapourizing furnace and internal combustion turbine, the application drying process, this drying process is used the sorbent material that adsorption of hydrogen sulfide at the temperature more than 300 ℃ of condensation etc. does not occur at water vapor.

In addition, in TOHKEMY 2000-213371 communique, a kind of technology is disclosed, wherein, " at the generation gas by gasifying in vapourizing furnace, be supplied to gas turbine burner and when making its burning, air moistening by burning use, utilize gas turbine exhaust to heat the air of this humidification, and make it be supplied to described gas turbine burner, reclaim gas turbine exhaust with the gas turbine generating system of energy in, " desulfurizer is not set between vapourizing furnace and internal combustion turbine, and in downstream from gas turbines, desulfurizer is set, suppress to discharge sulfide in atmosphere.

Patent documentation 1: TOHKEMY 2001-115854 communique

Patent documentation 2: TOHKEMY 2000-213371 communique

Summary of the invention

For example, in the technology of putting down in writing in TOHKEMY 2001-115854 communique, as being that fuel gasification and acting as a fuel is supplied to the technology that the internal combustion turbine that utilizes highly humid air is generated electricity by carbon, be provided with the dry-type desulphurization device of the use sorbent material of action at high temperature as impurity removing apparatus between vapourizing furnace and internal combustion turbine.

Yet, in above-mentioned technology, as dry-type desulphurization device, 2 adsorption towers that are filled with sorbent material need to be set, make to generate gas communication in an adsorption tower and carry out adsorption of hydrogen sulfide etc., during this period, in another adsorption tower, make temperature than the high temperature regeneration gas communication of the high 100 ℃ of left and right of temperature that generate gas, the hydrogen sulfide that in the sorbent material of filling from described another adsorption tower, desorb is adsorbed etc.

And, there is such problem,, in described dry-type desulphurization device, in order to prevent from generating the condensation of the water vapor in gas, when hydrogen sulfide in approximately making to generate gas under 400 ℃ etc. is adsorbed to sorbent material, needing to make the temperature of the regeneration gas of this adsorbent reactivation is approximately 500 ℃, in order to obtain this approximately regeneration gas of 500 ℃ of temperature, need to be than the taller approximately thermal source of 100 ℃ of the temperature of this regeneration gas, therefore, follow the thermosteresis of heat exchange to become large, use the generating efficiency of the gasification power generation system of the fuel gasified to descend.

The object of the present invention is to provide a kind of carbon is the gasification power generation system of fuel, it is fuel gasification and act as a fuel and be supplied to internal combustion turbine and generated electricity by carbon, in the situation that be provided with the desulfurizer of the use absorption liquid of action at low temperatures between vapourizing furnace and internal combustion turbine, also the used heat of vapourizing furnace can be directed into to internal combustion turbine, and obtain high generating efficiency.

Carbon of the present invention is the gasification power generation system of fuel, it is characterized in that, possesses: utilizing oxygenant is that fuel gasification and manufacturing be take the vapourizing furnace of the generation gas that carbon monoxide and hydrogen is main component by carbon, be arranged on the top of described vapourizing furnace the heat recovery section that the heat of the generation gas that produces is reclaimed in vapourizing furnace, be arranged on the downstream side of described vapourizing furnace and spray the water to cooling this generation gas of the generation gas produced in vapourizing furnace, produce the cooling tower of water vapor simultaneously, be arranged on the downstream side of described cooling tower and the generation gas produced taken off to the de-dirt equipment of dirt in vapourizing furnace, be arranged on the downstream side of described de-dirt equipment, utilize the heat that flows down the generation gas that takes off dirt equipment to make the 1st heat exchanger of the generation gas heating after water wash column, be arranged on the downstream side of described heat exchanger, the carbon monoxide in the gas of the generation with water vapor that makes to produce in the 1st heat exchanger and water vapor react and are converted into the conversion reactor of carbonic acid gas and hydrogen, be arranged on the downstream side of described conversion reactor, make absorption liquid at least absorb the absorption tower of the hydrogen sulfide in the generation gas after conversion reactor, be arranged on the downstream side of described conversion reactor, made from having removed of described absorption tower taking-up the generation gas after the hydrogen sulfide generation gas carry out indirect heat exchange with the generation gas after described conversion reactor, and made the 2nd heat exchanger of this generation gas heating, generation gas after heating up in described the 2nd heat exchanger acts as a fuel and imports and make its burning, produces the gas turbine burner of combustion gases, internal combustion turbine by the combustion gases drive generated in described gas turbine burner, the generator generated electricity by described gas turbine drives, be arranged on the stream of the waste gas gone out from described discharge of gas turbine, make the cooling water recoverer that reclaims the moisture comprised this waste gas of waste gas gone out from this discharge of gas turbine, and the part of the moisture that will reclaim in described water recoverer is injected into the combustion air that compressor by described internal combustion turbine is pressurizeed and is supplied to described fuel turbine combustion device, this combustion air is carried out to the conditioning tower of humidification, a part that also disposes the water will reclaimed in described water recoverer is supplied to described vapourizing furnace as water coolant from described water recoverer, the heat recovery section arranged in described vapourizing furnace, and be arranged on any one the water coolant plenum system in the cooling tower in downstream side of described vapourizing furnace, by this water coolant plenum system, water coolant is supplied to described vapourizing furnace from described water recoverer, described heat recovery section, and any one in described cooling tower.

According to the present invention, can realize that a kind of carbon is the gasification power generation system of fuel, it is fuel gasification and act as a fuel and be supplied to internal combustion turbine and generated electricity by carbon, in the situation that be provided with the desulfurizer that absorption liquid is used in action at low temperatures between vapourizing furnace and internal combustion turbine, also the used heat of vapourizing furnace can be directed into to internal combustion turbine, and obtain high generating efficiency.

The accompanying drawing explanation

Fig. 1 means that the carbon of the 1st embodiment of the present invention is the summary system diagram of structure of the gasification power generation system of fuel.

Fig. 2 means that the carbon of the 2nd embodiment of the present invention is the summary system diagram of structure of the gasification power generation system of fuel.

The carbon that Fig. 3 is illustrated in the 2nd embodiment shown in Fig. 2 is in the gasification power generation system of fuel, and the jet of water that will reclaim from the waste gas of internal combustion turbine is to the Local map of the vapourizing furnace heat recovery section of the structure of vapourizing furnace heat recovery section,

Fig. 4 means that the carbon of the 3rd embodiment of the present invention is the summary system diagram of structure of the gasification power generation system of fuel.

Fig. 5 means that the carbon of the 4th embodiment of the present invention is the summary system diagram of structure of the gasification power generation system of fuel.

The carbon that Fig. 6 is illustrated in the 4th embodiment shown in Fig. 5 is in the gasification power generation system of fuel, utilizes water cooling tube to form the Local map of vapourizing furnace heat recovery section of the structure of vapourizing furnace heat recovery section.

Fig. 7 means that the carbon of the 5th embodiment of the present invention is the summary system diagram of structure of the gasification power generation system of fuel.

The carbon that Fig. 8 is illustrated in the 6th embodiment of the present invention is in the gasification power generation system of fuel, the water supply that to reclaim from the waste gas of internal combustion turbine is to the water cooling tube of vapourizing furnace heat recovery section, sprays the water to the Local map of vapourizing furnace heat recovery section of the structure of the generation gas in heat recovery section from this water cooling tube.

Nomenclature

A: water coolant plenum system; A2: water coolant plenum system; A3: water coolant plenum system; B: intensification water supply system; C: carbonic acid gas plenum system; 1: coal (carbon is fuel); 2: oxygen (oxygenant); 3: the coal delivering gas; 4: the coke delivering gas; 5: slag; 6: coke; 7: air; 8: the water wash column washing water; 9: internal combustion turbine is to the injection water of air spray; 10: the water of supplying with to water recoverer; 11: absorption liquid; 50: vapourizing furnace; 51: the vapourizing furnace heat recovery section; 52: water cooler; 53: de-dirt device; 54: water wash column; 55: conversion reactor; 56: absorption tower; 57: knockout drum; 58: regenerator column; 59: carbonic acid gas/hydrogen sulfide separator; 60: gas turbine burner; 61: gas turbine compressor; 62: internal combustion turbine; 63: gas turbine powered generator; 64: conditioning tower; 65: conical settling tank; 66: chimney; 70-74: heat exchanger; 75: the circulation pipe arrangement of recycle-water; 76: the jet of water head; 77: the jet of water pipe arrangement; 78: water cooling tube; 80-89: flow rate regulating valve; 90: thermometer; 91: the conical settling tank leveler; 92: under meter; 93: the leveler of water pot; 94: pressure warning unit; 95-97: thermometer; 98,99: control device

Embodiment

For carbon of the present invention, be the embodiment of the gasification power generation system of fuel, quoted figures is carried out following explanation.

[embodiment 1]

Be the gasification power generation system of fuel for the carbon as the present invention the 1st embodiment, illustrate with Fig. 1.

The carbon of the present embodiment that Fig. 1 means is the gasification power generation system of fuel, and using coal 1 is fuel as carbon, uses oxygen 2 as oxygenant, utilizes nitrogen 3 to carry the coal 1 after Crushing of Ultrafines and is supplied to vapourizing furnace 50.

Oxygen 2 also is supplied to vapourizing furnace 50, and coal 1 and oxygen 2 are reacted in this vapourizing furnace 50, generate and take the generation gas 20 that carbon monoxide and hydrogen is main component.

The ash content do not become in the coal that generates gas 20 is discharged from vapourizing furnace 50 with the state of the slag 5 of melting.The generation gas 20 obtained in vapourizing furnace 50 via the vapourizing furnace heat recovery section 51 on the top that is arranged on vapourizing furnace 50, be directed in the cooling tower 52 in the downstream side that is arranged on vapourizing furnace 50, carry out cooling.

In described cooling tower 52, the part of the water 33 that will reclaim by the water recoverer 65 from the waste gas recycle-water, be supplied to cooling tower 52 by water coolant plenum system a as water 34 from water recoverer 65, and be injected into and generate gas 20 and carry out cooling, therefore, water 34 carries out gas-to-liquid contact and generating gasification with generation gas 20.

In this process, the sensible heat that generates gas 20 is converted into sensible heat and the latent heat of water vapor, and generating water vapor concentration in gas 20 becomes 40% left and right.Generate gas 20 is supplied to the downstream side that is arranged on this cooling tower 52 de-dirt device 53 from described cooling tower 52.

Amount about the water 34 that is supplied to cooling tower 52, the flow regulator 80 of the feed rate by regulating water 34 is controlled, so that the detected temperatures of the generation gas 20 that the set thermometer 90 of entrance of the de-dirt device 53 in the downstream side by being arranged on cooling tower 52 detects becomes preset value.

The preset value of the detected temperatures of this thermometer 90, the gasinlet temperature of obtaining due to the conversion reactor 55 in the downstream side by being arranged on de-dirt device 53 is approximately 300 ℃, therefore, is set so that detected temperatures is more than 300 ℃.

In addition, water vapor amount in generating gas 20 is for generating CO content in gas when above, this amount is remaining in generating gas 20, on the absorption tower 56 of the use absorption liquid in the downstream side that is arranged on described conversion reactor 55, condensations occurs, and causes generating efficiency to descend.

Therefore, for the water vapor amount that makes to generate in gas 20 can not become too much, the preset value of the temperature in of de-dirt device 53 is set.

Therefore, the scope that the preset value of the gas temperature of the entrance of de-dirt device 53 is 350 to 400 ℃.The dew point that the value of this temperature range generates gas 20 relatively is abundant high value, can prevent the condensate moisture in anti-avulsion dirt device 53.

Amount to the water 34 that is supplied to cooling tower 52 is increased and decreased so that as the temperature of the generation gas 20 of the entrance of above-mentioned de-dirt device 53 become preset value, but be the amount substantially equated with the feed rate of the coal 1 that is supplied to vapourizing furnace 50.

In de-dirt device 53, removed and generated the unburned coal (coke) 6 comprised in gas 20.This coke 6 is transported to vapourizing furnace 50 and carries out recirculation by nitrogen 4.

Next generation gas 20 after de-dirt device 53 be fed to the water wash column 54 in the downstream side that is arranged on this gas gas-heat exchanger 70 by the gas gas-heat exchanger 70 that is arranged on the downstream side that takes off dirt device 53.

Liquid water 8 is supplied to water wash column 54, and the halogen that makes to generate in water wash column 54 in gas 20 is adsorbed to described water 8, and extracts out from the bottom of water wash column 54.

Generate a part of water vapor generation condensation in gas 20 in water wash column 54, still, be supplied to a part of generating gasification of the water 8 of water wash column 54, therefore, the water vapor concentration in the generation gas 20 of the outlet of water wash column 54 equates with the value of water wash column 54 entrances.

The generation gas 20 of the outlet of water wash column 54 carries out heat exchange in gas gas-heat exchanger 70 with from de-dirt device 53 generation gas 20 out, is warming up to approximately 300 ℃, and is supplied to the conversion reactor 55 that is arranged on water wash column 54 downstream sides.

Be filled with conversion reaction catalyst in the inside of conversion reactor 55, generate carbon monoxide and water vapor generation conversion reaction in gas 20, and become carbonic acid gas and hydrogen.For this conversion reaction catalyst is worked, the gasinlet temperature that needs conversion reactor 55 is approximately 300 ℃.

In the situation that described conversion reactor 55 is not set, generate water vapor in gas 20 and in the absorption tower 56 approximately used under 40 ℃, condensation occurs in the downstream side that is arranged on conversion reactor 55, this heat of condensation is to not contribution of generating, so the generating efficiency of gasification power generation system significantly reduces.

On the other hand, carbon at the present embodiment is in the gasification power generation system of fuel, by make to generate water vapor and the carbon monoxide generation conversion reaction in gas 20 in conversion reactor 55, and be converted into boiling point, be carbonic acid gas and the hydrogen below 0 ℃, therefore, even in the downstream side of conversion reactor 55, be provided with from generate gas 20 by hydrogen sulfide and carbon dioxide absorption to the absorption tower 56 of absorption liquid 11, also just suppress to lesser extent the decline of the generating efficiency of gasification power generation system.

From described conversion reactor 55, generation gas 20 out is successively by the gas gas-heat exchanger 71 and water cooler 72 in the downstream side being arranged on conversion reactor 55, and is supplied to the absorption tower 56 in the downstream side that is arranged on conversion reactor 55.

In absorption tower 56, the absorption liquid such as methyldiethanolamine 11 is flowed, and make to generate the hydrogen sulfide absorption that comprises in gas 20 to this absorption liquid 11, and the absorption liquid 11 that will absorb hydrogen sulfide from 56De bottom, absorption tower is extracted out.

Here, the absorption liquid 11 that is supplied to absorption tower 56 is that alkaline amine absorption liquid can not only absorbing hydrogen sulphide, can also absorbing carbon dioxide, although carbonic acid gas is helpless to the combustion reactions in gas turbine burner 60, but become the medium that drives internal combustion turbine 62, therefore, preferably do not remove carbonic acid gas for the generating efficiency that improves gasification power generation system.

Therefore, added the material of the absorption that hinders carbonic acid gas in the absorption liquid 11 that is supplied to absorption tower 56, and used and contribute to the optionally material of absorbing hydrogen sulphide.

And generation gas out 20 utilizes in gas gas-heat exchanger 71 with the heat exchange of the generation gas 20 of the outlet of conversion reactor 55 after heating up from absorption tower 56, act as a fuel and be supplied to gas turbine burner 60.

By the injection by water 9 and conditioning tower 64 and the pressurized air 22 of humidification also is supplied to gas turbine burner 60, and make the generation gas 21 of itself and fuel that combustion reactionss occur, generate the combustion gases of high temperature.

The pressurized air 22 of this humidification is by obtaining as following methods.; entrance at gas turbine compressor 61; the about water 9 of 2 % by weight is injected into to air 6 and compression in compressor 61; the pressurized air of gained further is directed into to conditioning tower 64; it is contacted with water and become the pressurized air 22 that contains the water about 10 % by weight; after gas gas-heat exchanger 73 by the waste gas generation heat exchange with internal combustion turbine heats up, be directed into described gas turbine burner 60 with air as gas turbine combustion, obtain thus the pressurized air 22 of humidification.

The high-temperature combustion gas that burnt in gas turbine burner 60 and generate drives internal combustion turbine 62, makes to be connected to generator 63 rotations of the turning axle of internal combustion turbine 62, obtains thus electric power.

The waste gas of discharging from internal combustion turbine 62 is fed to gas gas-heat exchanger 73, by waste gas institute with a part of sensible heat be used for the intensification of described pressurized air 22.

Waste gas after described gas gas-heat exchanger 73 then is fed to condensate and heat exchanger 74, the water 30 that will reclaim by described water recoverer 65 is supplied to this condensate and heat exchanger 74, and by and the indirect heat exchange that flows between the waste gas of described condensate and heat exchanger 74 make waste gas cooling, make the condensate moisture comprised in this waste gas.

That is to say, waste gas with sensible heat and the latent heat of water vapor conducted to and be supplied to the water of vapourizing furnace 50, vapourizing furnace heat recovery section 51 or cooling tower 52 from described water recoverer 65 by water coolant plenum system a via described condensate and heat exchanger 74.

Therefore, will can't, for these thermal conduction of improving generating efficiency to the generation gas 20 at vapourizing furnace 50 gained, for the generating based on internal combustion turbine, thus, can realize that the generating efficiency of gasification power generation system improved because temperature levels is low in the past.

Through the water of the waste gas of described condensate and heat exchanger 74 and condensation be fed to water recoverer 65 and by waste gas and moisture from, the waste gas 23 that will separate in this water recoverer 65 is from chimney 65 is disposed to atmosphere.

In addition, the part of the water 30 that will in water recoverer 65, with waste gas, separate and reclaim is supplied to for feedwater 32 as the conditioning tower 64 for the compressed-air actuated humidification of internal combustion turbine, and, will in described water recoverer 65, separate and the part of the water 30 that reclaims as for cooling in vapourizing furnace 50 gained generation gas 20 and the water 34 that sprayed is supplied to cooling tower 52.

Like this, by water is carried out to recycle, make water consumption be suppressed.But, in the recycle of water, trace ingredients is concentrated, therefore, the water 31 that a part contains the trace ingredients of separating in water recoverer 65 does not carry out recycle, and implement draining, processes.And the water 10 that will not contain trace ingredients from outside is supplied to water recoverer 65, so that the watermark level of water recoverer 65 is constant.

Below enumerated carbon to the present embodiment and be the effect of additivity of the gasification power generation system of fuel.

Carbon at the present embodiment is in the gasification power generation system of fuel, downstream at vapourizing furnace is provided with conversion reactor, the carbon monoxide and the water vapor that make to generate in gas react and become carbonic acid gas and hydrogen in conversion reactor, afterwards, be directed into the absorption tower of using absorption liquid, remove the hydrogen sulfide generated in gas, therefore, the wet desulfurizer absorbed generating hydrogen sulfide in gas etc. under can be applicable to approximately 40 ℃ as impurity removing apparatus.

In addition, carbon at the present embodiment is in the gasification power generation system of fuel, wet desulfurizer can be reduced pressure to the hydrogen sulfide in absorption liquid and be become approximately 100 ℃, make thus this hydrogen sulfide regeneration, therefore, than the gas purification of dry-type desulphurization device, thermosteresis reduces, and can realize the high-level efficiency generating.

In addition, carbon at the present embodiment is in the gasification power generation system of fuel, the absorption liquid used in the gas purification of wet desulfurizer is liquid, so processing ease, and use the situation of the dry type gas purification of solid adsorbent can improve utilization than having applied, therefore and, because the life-span of absorption liquid is longer than sorbent material, can become the few and environment amenable equipment of waste.

In addition, at the carbon of the present embodiment, be in the gasification power generation system of fuel, can apply the internal combustion turbine with the situation same material that Sweet natural gas is acted as a fuel.

In addition, carbon at the present embodiment is in the gasification power generation system of fuel, need to deionizing setting from recycle-water, this recycle-water is separated out for the calcium carbonate of water system of recirculation in internal combustion turbine of suppressing to make to reclaim from gas turbine exhaust, calcium sulfate.

According to the present embodiment, can realize that a kind of carbon is the gasification power generation system of fuel, by carbon, be that to be supplied to the carbon that internal combustion turbine generated electricity be in the gasification power generation system of fuel for fuel gasification and acting as a fuel, in the situation that be provided with the desulfurizer of the use absorption liquid of action at low temperatures between vapourizing furnace and internal combustion turbine, also the used heat of vapourizing furnace can be directed into to internal combustion turbine, and obtain high generating efficiency.

[embodiment 2]

Below, illustrate that with Fig. 2 the carbon of the present invention the 2nd embodiment is the gasification power generation system of fuel.

The carbon of the present embodiment that Fig. 2 means is the gasification power generation system of fuel, basically the carbon that has the 1st embodiment meaned with Fig. 1 is the identical structure of gasification power generation system of fuel, therefore, omitted the explanation of the structure identical to both, below described for different structures.

The carbon of the present embodiment meaned at Fig. 2 is in the gasification power generation system of fuel, the downstream side of the vapourizing furnace heat recovery section 51 in being arranged on vapourizing furnace 50 does not possess cooling tower 52, and knockout drum (knock-out drum) 57 is arranged on to the position of the upstream side of the downstream side that becomes vapourizing furnace heat recovery section 51, de-dirt device 53.

In addition, at described water recoverer 65 and between the vapourizing furnace heat recovery section 51 of the top of vapourizing furnace 50 setting, be provided with the water coolant plenum system a2 of a part that imports the water 30 that separates and reclaim in water recoverer 65.

The water 30 that separates in water recoverer 65 and reclaim, the confession feedwater 32 of not only supplying with for the conditioning tower 64 to for the compressed-air actuated humidification of internal combustion turbine, the water 33 sprayed to the generation gas 20 of gained in vapourizing furnace 50, and, the water 34 of the part of the water 30 that will in described water recoverer 65, with waste gas, separate and reclaim, be supplied to the vapourizing furnace heat recovery section 51 on the top that is arranged on vapourizing furnace 50 by described water coolant plenum system a2 from water recoverer 65, and as being divided into the multistage injection water sprayed 34, and be injected into this water recoverer 65, and water 34 is contacted with the generation gas 20 generated in vapourizing furnace 50.

By the water coolant plenum system, a2 is supplied with, and be divided into multistage and be injected into the feed rate of the water 34 of vapourizing furnace heat recovery section 51, making the detected temperatures that the thermometer 90 of the entrance by being arranged on de-dirt device 53 detects is that the aperture that is arranged on the flow rate regulating valve 80 in water coolant plenum system a2 is regulated according to the detected temperatures of this thermometer 90 in preset value ground, controls to be divided into multistage and to be injected into the feed rate of the water 34 of vapourizing furnace heat recovery section 51.

Setting by this knockout drum 57, when the starting of vapourizing furnace 50, while stopping etc., the gas temperature of the generation gas 20 generated in vapourizing furnace 50 is low, in the part of the water 34 that is injected into vapourizing furnace heat recovery section 51 in the situation that generating gasification and following in generating gas 20 not in vapourizing furnace heat recovery section 51 also liquid water can be separated from generate gas 20 and flow into de-dirt device 53 to prevent liquid water.

Carbon at the present embodiment is in the gasification power generation system of fuel, the part of the water 30 that will reclaim from gas turbine exhaust in water recoverer 65 is divided into multistage and is injected into the vapourizing furnace heat recovery section 51 in being arranged on vapourizing furnace 50 as injection water, the generation gas 20 generated in vapourizing furnace 50 is contacted with the water 34 sprayed, therefore, can prevent from generating the low temperature that locality occurs gas 20.

In addition, by injection water 34 being divided into to the multistage vapourizing furnace heat recovery section 51 that is injected into, and make to generate the low-temperature section that not there will be locality in gas 20, make water 34 Quick-gasifyings that spray, and prevent from generating unreacted coal in gas 20 (coke 6), due to the intervention of liquid water, aggegation occurs.

In order to be divided into the multistage vapourizing furnace heat recovery section 51 that is arranged on vapourizing furnace 3 tops that water 34 is injected into, carbon at the present embodiment is in the gasification power generation system of fuel, as shown in the partial graph as Fig. 3, 76 peripheral side that are arranged on vapourizing furnace heat recovery section 51 for jet of water of the multistage circular tube shaped of gas temperature control unit will form be generated, and arrange respectively from these jet of water at different levels and with emitting shape, water 34 is supplied to the pipe arrangement 77 for jet of water of the vapourizing furnace heat recovery section 51 of vapourizing furnace 50 with 76, the front end of this jet of water pipe arrangement 77 is connected with the jet of water nozzle and water 34 is injected into to the inside of vapourizing furnace heat recovery section 51.

And, be divided into the emitted dose of water 34 multistage and that be injected into the inside of vapourizing furnace heat recovery section 51 and controlled by control device 98.

Here, be arranged on jet of water vapourizing furnace heat recovery section 51 and be injected into the emitted dose of the interior water 34 of vapourizing furnace heat recovery section 51 with pipe arrangement 77 by each jet of water with 76 from being divided into multistage, temperature according to the detected generation gas 20 of thermometer 97 of the outlet by being arranged on vapourizing furnace heat recovery section 51, emitted dose by described control device 98 computing injection waters 34, according to the instruction signal from this control device 98, adjust flux is adjusted the aperture of valve 86 to 89 and is controlled and be supplied to the feed rate of described multistage jet of water with 76 water 34, thus, make by jet of water, to use pipe arrangement 77 to be injected into the emitted dose of water 34 of vapourizing furnace heat recovery section 51 at different levels variable from multistage jet of water with 76, control the temperature of the generation gas 20 of vapourizing furnace heat recovery section 51 outlets.

Need the reason of above-mentioned generation gas temperature control unit to be, in the scope that the ratio control of the water vapor/carbon monoxide of the entrance of conversion reactor 55 need to be determined in the performance by conversion reaction catalyst, therefore, as long as determined the carbon kind of coal 1 and the operating condition of vapourizing furnace 3, just determined the feed rate of the water 34 that can increase and decrease, also determined the temperature range of controllable generation gas 20, therefore, there is the carbon kind of very large property difference in the situation that use with coal, the gas temperature of the generation gas 20 of the entrance of de-dirt device 53 may be too high, perhaps cross lower than design temperature.

By the generation gas temperature control unit that the temperature of this generation gas 20 is controlled is set, even there is the carbon kind of the coal 1 of very large proterties difference with coal, also the temperature that takes off the generation gas 20 of dirt device 53 entrances can be controlled in suitable scope.

Then, the control method of this generation gas temperature control unit is specifically described.According to from described multistage jet of water with 76 at different levelsly by jet of water, use pipe arrangement 77 to be divided into the multistage equal condition of emitted dose that is injected into the interior water 34 of vapourizing furnace heat recovery section 51, the temperature of the generation gas 20 exported by the detected vapourizing furnace heat recovery section 51 of thermometer 97 is compared in the situation of set(ting)value generation decline, according to the instruction signal calculated by control device 98, the aperture of the flow rate regulating valve A86 that increase is controlled the jet of water amount of the subordinate that sprays to described vapourizing furnace heat recovery section 51 is regulated to spray to the injection quantitative change of water 34 of subordinate of this heat recovery section 51 many, the aperture that reduces the flow rate regulating valve D89 that the jet of water amount of the higher level to spraying to vapourizing furnace heat recovery section 51 controlled is regulated so that spray to the higher level's of this heat recovery section 51 the emitted dose of water 34 and tail off, the temperature of the generation gas 20 in the foot of described heat recovery section 51 is descended to be increased.

Recovery of heat amount in this heat recovery section 51, proportional with the wall surface temperature of the temperature that generates gas 20 and vapourizing furnace heat recovery section 51, therefore, when the temperature of the generation gas 20 of the foot of heat recovery section 51 descends while increasing, the recovery of heat amount in heat recovery section 51 reduces, accompany therewith, can make the temperature of generation gas 20 of the outlet of heat recovery section 51 increase.

In addition, on the contrary, according to from described multistage jet of water with 76 at different levelsly by jet of water, use pipe arrangement 77 to be divided into the emitted dose equal condition of multi-stage jet to the interior water 34 of vapourizing furnace heat recovery section 51, in the situation that comparing set(ting)value, the temperature of the generation gas 20 exported by the detected vapourizing furnace heat recovery section 51 of thermometer 97 occurs to rise, according to the instruction signal calculated by control device 98, the aperture that reduces the flow rate regulating valve A86 that the jet of water amount of the subordinate to spraying to described vapourizing furnace heat recovery section 51 controlled is regulated so that spray to the emitted dose of water 34 of the subordinate of this heat recovery section 51 and tail off, the aperture of the flow rate regulating valve D89 that increase is controlled the higher level's that sprays to vapourizing furnace heat recovery section 51 jet of water amount is regulated to spray to higher level's the injection quantitative change of water 34 of this heat recovery section 51 many, make the temperature of generation gas 20 of the foot of described heat recovery section 51 increase.

When the temperature of the generation gas 20 of the subordinate of described heat recovery section 51 rises, the recovery of heat amount the heat recovery section 51 from this more than position increases, and therefore, can make the temperature of generation gas 20 of the outlet of heat recovery section 51 descend.

Like this, generate the control method of gas temperature control unit by application, make from described multistage jet of water with 76 at different levelsly by jet of water, use pipe arrangement 77 to be divided into multi-stage jet to the emitted dose of the water 34 in vapourizing furnace heat recovery section 51 to increase and decrease, the temperature of the generation gas 20 of the outlet of control heat recovery section 51 is to be maintained design temperature.

Carbon as the present embodiment is effect additional in the gasification power generation system of fuel, owing to only being provided with small-sized knockout drum, does not need to arrange large cooling column, therefore, can simplify the device structure of gasification power generation system.

According to the present embodiment, can realize that a kind of carbon is the gasification power generation system of fuel, at this carbon, be in the gasification power generation system of fuel, by carbon, to be fuel gasification and act as a fuel and be supplied to internal combustion turbine and generated electricity, wherein, in the situation that be provided with the desulfurizer of the use absorption liquid of action at low temperatures between vapourizing furnace and internal combustion turbine, also the used heat of vapourizing furnace can be directed into to internal combustion turbine, and obtain high generating efficiency.

[embodiment 3]

Then, use Fig. 4 to illustrate that the carbon of the present invention the 3rd embodiment is the gasification power generation system of fuel.

The carbon of the present embodiment that Fig. 4 means is the gasification power generation system of fuel, basically the carbon that has the 1st embodiment meaned with Fig. 1 is the identical structure of gasification power generation system of fuel, therefore, omitted the explanation of the structure identical to both, below described for different structures.

In order to prevent global warming, require to cut down the carbonic acid gas from the heat power station discharge.The carbon of the first embodiment meaned at Fig. 1 is in the gasification power generation system of fuel, meaned to remove selectively by absorption tower 56 situation of the embodiment of hydrogen sulfide, but, from preventing the viewpoint of global warming, preferably in absorption tower 56, hydrogen sulfide not only can be reclaimed, and carbonic acid gas can be reclaimed.The carbon of the present embodiment is the example that the gasification power generation system of fuel has meaned such situation.

The carbon meaned at Fig. 4 is in the gasification power generation system of fuel, and in absorption tower 56, the alkaline absorption solution 11 of methyldiethanolamine used etc. can absorb hydrogen sulfide and the carbonic acid gas as sour gas.Therefore, the absorption liquid 11 that is supplied to absorption tower 56 contacts with generating gas 20, and absorbs hydrogen sulfide and the carbonic acid gas generated in gas 20.

The hydrogen sulfide that generates in gas 20 and the absorption liquid 11 of carbonic acid gas have been absorbed in absorption tower 56,56 be directed into regenerator column 58 from absorption tower, in regenerator column 58, make the temperature of absorption liquid 11 increase, make thus the hydrogen sulfide and the carbonic acid gas that absorb to absorption liquid 11 break away from from this absorption liquid 11.

Carbon at the present embodiment is in the gasification power generation system of fuel, to break away from and used regenerator column 58 in order to make to absorb to the hydrogen sulfide of absorption liquid 11 and carbonic acid gas, but, the method reduced pressure when improving the temperature of absorption liquid 11, also can make the hydrogen sulfide and the carbonic acid gas that absorb to absorption liquid 11 break away from from this absorption liquid 11.

Carbon at the present embodiment is in the gasification power generation system of fuel, obtain in regenerator column 58 mixed gas 40 from the isolated hydrogen sulfide of this absorption liquid 11 and carbonic acid gas in the outlet of regenerator column 58, but, for stabilizing carbon dioxide, need to improve the purity of carbonic acid gas.

For this reason, the mixed gas of hydrogen sulfide and carbonic acid gas 40 is directed into to the carbonic acid gas in the downstream side that is arranged on regenerator column 58/hydrogen sulfide separator 59.

In described carbonic acid gas/hydrogen sulfide separator 59, for example, can use the adsorption tower be filled with for the sorbent material of adsorption of hydrogen sulfide.This adsorption tower is set to 2 more than tower, in an adsorption tower during hydrogen sulfide is adsorbed, ventilating air in other adsorption tower, make hydrogen sulfide adsorption in the time of sorbent material or disengaging, with airborne oxygen, reacts and generate sulfurous gas 41.

This sulfurous gas reclaims as gypsum by gypsum.That is to say, the gas that contains sulfurous gas is reacted with limestone slurry, the sulphur in gas is as the gypsum of solid and fix, and separates with limestone slurry.

The high-pureness carbon dioxide 42 obtained in carbonic acid gas/hydrogen sulfide separator 59, be supplied to the compressor 67 in the downstream side that is arranged on described carbonic acid gas/hydrogen sulfide separator 59 and compressed, and be supplied to the not shown carbonic acid gas storage of other setting and preserved as liquid.

In addition, between the compressor 67 and vapourizing furnace 50 arranged in the downstream side of carbonic acid gas/hydrogen sulfide separator 59, be provided with the carbonic acid gas plenum system b that the carbonic acid gas at described carbonic acid gas/hydrogen sulfide separator 59 gained is supplied to vapourizing furnace 50.

And, the part of the carbonic acid gas 42 that the pressure that will obtain in described carbonic acid gas/hydrogen sulfide separator 59 is the 4MPa left and right is extracted out, by being arranged on the carbonic acid gas plenum system b between carbonic acid gas/hydrogen sulfide separator 59 and vapourizing furnace 50, this carbonic acid gas 42 is supplied to vapourizing furnace 50 from described carbonic acid gas/hydrogen sulfide separator 59, and cleans for the pressure side of cooling, the pressure warning unit that vapourizing furnace 50 arranges of the conveying of coal 1, coke 6, vapourizing furnace 50 etc.

Carbon as the present embodiment is the additional effect of the gasification power generation system of fuel, can be in carbonic acid gas/hydrogen sulfide separator 59 the high carbonic acid gas of separation purity, therefore, can do not removed the pre-treatment of moisture etc. and isolated carbonic acid gas is compressed in compressor, can in the system of gasification power generation system, be effectively utilized carbonic acid gas.

According to the present embodiment, can realize that a kind of carbon is the gasification power generation system of fuel, by carbon, be that to be supplied to the carbon that internal combustion turbine generated electricity be in the gasification power generation system of fuel for fuel gasification and acting as a fuel, in the situation that be provided with the desulfurizer of the use absorption liquid of action at low temperatures between vapourizing furnace and internal combustion turbine, also the used heat of vapourizing furnace can be directed into to internal combustion turbine, and obtain high generating efficiency.

[embodiment 4]

Below, illustrate that with Fig. 5 the carbon of the present invention the 4th embodiment is the gasification power generation system of fuel.

The carbon of the present embodiment that Fig. 5 means is the gasification power generation system of fuel, basically the carbon that has the 1st embodiment meaned with Fig. 1 is the identical structure of gasification power generation system of fuel, therefore, omitted the explanation of the structure identical to both, below described for different structures.

The carbon of the present embodiment that Fig. 5 means is the gasification power generation system of fuel, after the part of the water 30 that expression will be reclaimed from gas turbine exhaust heats up at the water wall of vapourizing furnace 50, in vapourizing furnace heat recovery section 51, in the downstream of vapourizing furnace 50 to the structure of spraying in generating gas 20.

In the situation that use the compound power-generating with internal combustion turbine and steam turbine to be generated electricity, boiling water is supplied with to water wall, the vapourizing furnace heat recovery section 51 of vapourizing furnace 50, utilize the used heat of vapourizing furnace to form water vapor, and this water vapor is supplied with to steam turbine and obtained electric power.

But, the carbon of the present embodiment is that the gasification power generation system of fuel does not possess steam turbine, therefore, even form water vapor in the water wall of vapourizing furnace 50, vapourizing furnace heat recovery section 51, the part of this water vapor is used to multiple use, but major part is not converted into electric power, therefore, the generating efficiency of gasification power generation system descends.

Therefore, carbon at the present embodiment is in the gasification power generation system of fuel, at water recoverer 65 and be arranged between the vapourizing furnace heat recovery section 51 on top of vapourizing furnace 50, the water 33 that disposes the part of the water 30 that will reclaim in water recoverer 65 is supplied to the water coolant plenum system a2 of vapourizing furnace heat recovery section 51.

And, as shown in Figure 5 and Figure 6, the water 33 of the part of the water 30 that will reclaim from the waste gas of internal combustion turbine by water recoverer 65, be supplied to the vapourizing furnace heat recovery section 51 on the top that is arranged on vapourizing furnace 50 from water recoverer 65 by water coolant plenum system a2, will generate the recovery of heat of gas 20 in this vapourizing furnace heat recovery section 51 to water 33.

By water coolant plenum system a2, supply with, reclaim the heat that generates gas 20 and the water 33 heated up in described vapourizing furnace heat recovery section 51, among the intensification water supply system b of the water wash column 54 that is supplied to the downstream side that is arranged on de-dirt device 53 from this vapourizing furnace heat recovery section 51, branch occurs, and be supplied to cooling tower 52, and be injected into as injection water 34 the generation gas 20 flowed down from cooling tower 52.

The emitted dose that is injected into the injection water 34 of cooling tower 52 is regulated by flow rate regulating valve 80.

Be arranged on the structure of vapourizing furnace heat recovery section 51 on the top of vapourizing furnace 50, as shown in Figure 6, adopted will be upright with vertical direction water cooling tube 78 arrange side by side and become structure cylindraceous, or water cooling tube 78 is become to structure cylindraceous with spirally winding.

The feed rate that is supplied to the water 33 of described vapourizing furnace heat recovery section 51 from water recoverer 65 is set, so that form the material of vapourizing furnace heat recovery section 51, can not reach a high temperature, by operation flow rate regulating valve 82, being controlled, is preset value so that be arranged on the indicator value of the under meter 92 on pipe arrangement.

Like this, make a certain amount of water 33 be circulated to described vapourizing furnace heat recovery section 51, and by the full dose of the water 33 after described vapourizing furnace heat recovery section 51 as injection water 34, while via flow rate regulating valve 80, being injected into cooling tower 52, according to the operating condition of vapourizing furnace 50, make the gas temperature of the front generation gas 20 of de-dirt device 53 lower than preset value.

Therefore, for the indicator value of the thermometer 90 of the entrance that makes to be arranged on de-dirt device 53 is preset value, control the feed rate that is supplied to the water 34 of cooling tower 52 from described vapourizing furnace heat recovery section 51 by flow rate regulating valve 80.

And, in vapourizing furnace heat recovery section 51 and be arranged between the water wash column 54 in downstream side of de-dirt device 53 and dispose intensification water supply system b, will in vapourizing furnace heat recovery section 51, heat up and the remaining water 24 that is not supplied to cooling tower 52 by this intensification water supply system b to water wash column 54 supplies.

According to the present embodiment, can realize that a kind of carbon is the gasification power generation system of fuel, by carbon, it is fuel gasification and act as a fuel and be supplied to internal combustion turbine and generated electricity, in the situation that be provided with the desulfurizer of the use absorption liquid of action at low temperatures between vapourizing furnace and internal combustion turbine, also the used heat of vapourizing furnace can be directed into to internal combustion turbine, and obtain high generating efficiency.

[embodiment 5]

Below, illustrate that with Fig. 7 the carbon of the present invention the 5th embodiment is the gasification power generation system of fuel.

The carbon of the present embodiment that Fig. 7 means is the gasification power generation system of fuel, basically the carbon that has the 1st embodiment meaned with Fig. 1 is the identical structure of gasification power generation system of fuel, therefore, omitted the explanation of the structure identical to both, below described for different structures.

The carbon of the present embodiment that Fig. 7 means is the gasification power generation system of fuel, disposes between the water wall of described water recoverer 65 and vapourizing furnace 50 that guiding separates in water recoverer 65 and the water coolant plenum system a3 of the part of the water 30 that reclaims.

And, the part of the water 30 will be in the water recoverer 65 of internal combustion turbine reclaimed from waste gas is supplied to the water wall of vapourizing furnace 50 by water coolant plenum system a3, and will be at the water wall place of this vapourizing furnace 50 part by the water 33 that generates gas 20 and heat up be supplied to cooling tower 52 as injection water 34 from the water wall of this vapourizing furnace 50 and sprayed.The emitted dose that is injected into the injection water 34 of cooling tower 52 is regulated by flow rate regulating valve 80.

Same with heat recovery section 51; the water wall of described vapourizing furnace 50 can be also that the water cooling tube upright with vertical direction is arranged in to structure cylindraceous side by side; or water cooling tube is become to structure cylindraceous with spirally winding, be applied with as required the structure that refractory material protection metallic substance is avoided the temperatures involved in vapourizing furnace 50.

Material for the water wall of protecting vapourizing furnace 50; 82 pairs of under meter 92 and flow rate regulating valves be supplied to the water wall of vapourizing furnace 50 from water recoverer 65 feed rate of water 30 by water coolant plenum system a3 is set in described water coolant plenum system a3 to be set; so that the feed rate of the water 30 of predetermined amount flows through; adjust flux is adjusted the aperture of valve 82 and is controlled the feed rate of water 30, so that be arranged on the flow detection value of the under meter 92 in described water coolant plenum system a3, is preset value.

Like this, make the feed rate of a certain amount of water 30 be circulated to the water wall of vapourizing furnace 50 by water coolant plenum system a3, and while from the water wall of this vapourizing furnace 50, the water coolant 34 heating up being injected into to cooling tower 52, can make according to the operating condition of vapourizing furnace 50 gas temperature of entrance of de-dirt device 53 lower than preset value.

Therefore, entrance at de-dirt device 53 is provided with thermometer 90, for being prescribed value, the detected temperatures that makes this thermometer 90 controls the feed rate of the water coolant 34 from the water wall of vapourizing furnace 50 is supplied to the intensification of cooling tower 52 by flow rate regulating valve 80, no matter how make the operating condition of vapourizing furnace 50, always make the gas temperature of the entrance of de-dirt device 53 meet preset value.

And, at the water wall of vapourizing furnace 50 and be arranged between the water wash column 54 in downstream side of de-dirt device 53 and dispose intensification water supply system b, will in the water wall of vapourizing furnace 50, heat up and be not supplied to remaining water 24 water wash column 54 supplies to the downstream side that is arranged on de-dirt device 53 by described intensification water supply system b of cooling tower 52.

In addition, the water will be in water recoverer 65 reclaimed from the waste gas of internal combustion turbine, only be supplied to vapourizing furnace heat recovery section 51 by water coolant plenum system a in the 4th embodiment meaned at Fig. 5, only be supplied to the water wall of vapourizing furnace 5 by water coolant plenum system a3 in the 5th embodiment that Fig. 7 means, but, also can configure water coolant plenum system a and water coolant plenum system a3, and the water supply that will reclaim from the waste gas from water recoverer 65 is to the water wall of vapourizing furnace heat recovery section 51 and vapourizing furnace 5.

According to the present embodiment, can realize that a kind of carbon is the gasification power generation system of fuel, it is fuel gasification and act as a fuel and be supplied to internal combustion turbine and generated electricity by carbon, in the situation that be provided with the desulfurizer of the use absorption liquid of action at low temperatures between vapourizing furnace and internal combustion turbine, also the used heat of vapourizing furnace can be directed into to internal combustion turbine, and obtain high generating efficiency.

[embodiment 6]

Below, illustrate that with Fig. 8 the carbon of the present invention the 6th embodiment is the gasification power generation system of fuel.

The carbon of the present embodiment that Fig. 8 means is the gasification power generation system of fuel, basically having with the carbon of the 1st embodiment shown in Fig. 1 is the structure that the gasification power generation system of fuel is identical, therefore, omitted the explanation of the structure identical to both, below described for different structures.

The carbon of the present embodiment meaned at Fig. 8 is in the gasification power generation system of fuel, meaned that by the part of the water 30 reclaimed from the waste gas of internal combustion turbine in embodiment illustrated in fig. 54 be water 33 in water recoverer 65, be supplied to the water cooling tube 78 of vapourizing furnace heat recovery section 51 by water coolant plenum system a2 from this water recoverer 65, and utilization generates the heat of gas 20 and heats up, the water 33 by after heating up is supplied to the intensification water supply system b of water wash column 54 from vapourizing furnace heat recovery section 51, branch occurring and is supplied to cooling tower 52, and be injected into the embodiment of the generation gas 20 that flows down cooling tower 52 as injection water 34, but, also can perforate in the water cooling tube 78 of vapourizing furnace heat recovery section 51, the water 33 that will be supplied to vapourizing furnace heat recovery section 51 by water coolant plenum system a2 is injected into the generation gas 20 in vapourizing furnace heat recovery section 51.

In this case, preferably injection nozzle is embedded in the hole of water cooling tube 78 of vapourizing furnace heat recovery section 51, from injection nozzle, water 33 is contacted as small water droplet with the generation gas 20 vapourizing furnace heat recovery section 51.

Have hole in the water cooling tube 78 of described vapourizing furnace heat recovery section 51, and in the situation that water 33 is sprayed by vapourizing furnace heat recovery section 51, the carbon of the present embodiment meaned as Fig. 8 is the gasification power generation system of fuel, a part that is provided with the water that will reclaim in water recoverer 65 imports and the tank 67 of storage from water recoverer 65 as the water that is supplied to vapourizing furnace 50, and disposes the supplying tubing that water 33 is supplied to the water cooling tube 78 of vapourizing furnace heat recovery section 51 from this tank 67 utilizes pump 68 to boost.

In addition, be provided with and make the intensification water 24 heated up by generation gas 20 be back to a plurality of pipe arrangements that return of tank 67 from the water cooling tube 78 of vapourizing furnace heat recovery section 51.

In order to make the material that forms vapourizing furnace heat recovery section 51 can, in high temperature, need to not make water flow in the water cooling tube 78 of vapourizing furnace heat recovery section 51.Therefore, what at the water cooling tube 78 of water 24 from vapourizing furnace heat recovery section 51 that make to heat up, be back to tank 67 described a plurality ofly returns to pipe arrangement, be respectively arranged with the thermometer 95,96 of the temperature of measuring intensification water 24 and regulate the flow rate regulating valve 84,85 of the flow of intensification water 24, and being provided with the detected temperatures according to the temperature by described thermometer 95,96 detected intensification water 24, the aperture of operation flow rate regulating valve 84,85 is regulated the 2nd control device 99 of the flow of intensification water 24.

And, in the situation that high by the detected temperatures of described thermometer 95,96 detected intensification water 24, operate by the 2nd control device 99 aperture that makes flow rate regulating valve 84,85 and become large, the internal circulating load of water 33 that is supplied to the water cooling tube 78 of vapourizing furnace heat recovery section 51 from tank 67 is increased, and the temperature that has suppressed intensification water 24 rise.

In addition, in the situation that low by the detected temperatures of described thermometer 95,96 detected intensification water 24, operate the aperture of flow rate regulating valve 84,85 is diminished by the 2nd control device 99, the internal circulating load of water 33 that is supplied to the water cooling tube 78 of vapourizing furnace heat recovery section 51 from tank 67 is reduced, and the temperature of the water 24 that makes to heat up rise.

For the temperature of the generation gas 20 of the outlet by vapourizing furnace heat recovery section 51 maintains preset value, need to the emitted dose of the water coolant 33 that is injected into vapourizing furnace heat recovery section 51 be increased and decreased.For this reason, be provided with the pressure warning unit 94 of measuring stress in the supplying tubing of the outlet side of pump 68, set(ting)value about the pressure by the detected generation gas 20 of this pressure warning unit 94, the temperature of the detected generation gas 20 of thermometer 90 arranged for the upstream that makes the knockout drum 59 by the downstream side being arranged on vapourizing furnace heat recovery section 51 is maintained preset value, and, according to by the detected temperatures of the detected generation gas 20 of thermometer 90, regulate the setting of the pressure of pump 68 by the 2nd control device 99.

; detected by thermometer 90, in the situation that the detected temperatures of the generation gas 20 of the upstream side of the downstream side knockout drum 59 of vapourizing furnace heat recovery section 51 is low; according to the instruction signal from described the 2nd control device 99; reduce the set(ting)value of the pressure of pump 68; the amount of water 33 mobile in the water cooling tube 78 of vapourizing furnace heat recovery section 51 is reduced, and the emitted dose from vapourizing furnace heat recovery section 51 to the water 33 that generates gas 20 injections reduces.

In addition, detected by thermometer 90, in the situation that the detected temperatures of the generation gas 20 of the upstream side of the downstream side knockout drum 59 of vapourizing furnace heat recovery section 51 is high, according to the instruction signal from the 2nd control device 99, improve the set(ting)value of the pressure of pump 68, the amount of water 33 mobile in the water cooling tube 78 of vapourizing furnace heat recovery section 51 is increased, emitted dose from from vapourizing furnace heat recovery section 51 to the water 33 that generates gas 20 injections increases, the temperature of so controlling the generation gas 20 that makes the outlet by the detected vapourizing furnace heat recovery section 51 of thermometer 90 maintains preset value.

Pressure for the water 33 of the outlet of adjusting pump 68, be provided with the 2nd pipe arrangement that is back to tank 67 from the outlet of pump 68, and be provided with flow rate regulating valve 83 in the 2nd pipe arrangement.

And, carry out such control: in the situation that the pressure ratio set(ting)value of the water 33 of the outlet by the detected pump 68 of pressure warning unit 94 is high, based on passing through the detected detecting pressure of pressure warning unit 94, according to the instruction signal from control device 99 outputs, regulated so that the aperture of this flow rate regulating valve 83 becomes large; In addition, in the situation that the pressure ratio set(ting)value of the water 33 of the outlet by the detected pump 68 of pressure warning unit 94 is low, according to the instruction signal from control device 99 outputs, regulated so that the aperture of this flow rate regulating valve 83 diminishes.

Carbon as above-mentioned the present embodiment is the additional effect of the gasification power generation system of fuel, can the reliability of gasification power generation system be improved by control device.

According to the present embodiment, can realize that a kind of carbon is the gasification power generation system of fuel, it is to act as a fuel after fuel gasification to supply with internal combustion turbine and generated electricity by carbon, in the situation that be provided with the desulfurizer of the use absorption liquid of action at low temperatures between vapourizing furnace and internal combustion turbine, also the used heat of vapourizing furnace can be directed into to internal combustion turbine, and obtain high generating efficiency.

The present invention is that the carbon that fuel is generated electricity as raw material is the gasification power generation system of fuel applicable to take the carbon of coal, biological substance etc., especially, and applicable to by carbon being fuel gasification and the carbon that generated electricity for internal combustion turbine is the gasification power generation system of fuel.

Claims (13)

1. the gasification power generation system that carbon is fuel, is characterized in that,

Possess:

Utilizing oxygenant is that fuel gasification and manufacturing be take the vapourizing furnace of the generation gas that carbon monoxide and hydrogen is main component by carbon;

Be arranged on the top of described vapourizing furnace, the heat recovery section that the heat of the generation gas manufactured is reclaimed in vapourizing furnace;

Be arranged on the downstream side of described vapourizing furnace, and spray the water to cooling this generation gas of the generation gas produced in vapourizing furnace, produce the cooling tower of water vapor simultaneously;

Be arranged on the downstream side of described cooling tower, the generation gas produced taken off to the de-dirt equipment of dirt in vapourizing furnace;

Be arranged on the downstream side of described de-dirt equipment, utilize the heat that flows down the generation gas that takes off dirt equipment to make the 1st heat exchanger of the generation gas heating after water wash column;

Be arranged on the downstream side of described heat exchanger, the carbon monoxide in the gas of the generation with water vapor that makes to produce in the 1st heat exchanger and water vapor react and are converted into the conversion reactor of carbonic acid gas and hydrogen;

Be arranged on the downstream side of described conversion reactor, make absorption liquid at least absorb the absorption tower of the hydrogen sulfide in the generation gas after conversion reactor;

Be arranged on the downstream side of described conversion reactor, make the generation gas of having removed the hydrogen sulfide generation gas taken out from described absorption tower carry out indirect heat exchange with the generation gas after described conversion reactor, and make the 2nd heat exchanger of this generation gas heating;

Generation gas after heating up in described the 2nd heat exchanger acts as a fuel and imports and make its burning, produces the gas turbine burner of combustion gases;

Internal combustion turbine by the combustion gases drive produced in described gas turbine burner;

The generator generated electricity by described gas turbine drives;

Be arranged on the stream of the waste gas gone out from described discharge of gas turbine, make the cooling water recoverer that reclaims the moisture comprised this waste gas of waste gas gone out from this discharge of gas turbine; And

Be injected in the part of the moisture reclaimed in described water recoverer to the compressor pressurizes by described internal combustion turbine the combustion air that is supplied to described fuel turbine combustion device, this combustion air carried out to the conditioning tower of humidification,

A part that also disposes the water will reclaimed in described water recoverer is supplied to described vapourizing furnace, the heat recovery section arranged described vapourizing furnace and is arranged on any one the water coolant plenum system in the cooling tower in downstream side of described vapourizing furnace as water coolant from described water recoverer, by this water coolant plenum system, water coolant is supplied to any one described vapourizing furnace, described heat recovery section and described cooling tower from described water recoverer.

2. carbon according to claim 1 is the gasification power generation system of fuel, it is characterized in that,

The part of the water that will reclaim in described water recoverer, as water coolant, is supplied to the water wall of described vapourizing furnace from this water recoverer by described water coolant plenum system.

3. carbon according to claim 1 is the gasification power generation system of fuel, it is characterized in that,

The part of the water that will reclaim in described water recoverer, as water coolant, is supplied to from this water recoverer the heat recovery section arranged described vapourizing furnace by described water coolant plenum system.

4. carbon according to claim 1 is the gasification power generation system of fuel, it is characterized in that,

The part of the water that will reclaim in described water recoverer, as water coolant, is supplied to described cooling tower by described water coolant plenum system from this water recoverer.

5. carbon according to claim 2 is the gasification power generation system of fuel, it is characterized in that,

Make to reclaim and be supplied to the water of the water wall of described vapourizing furnace in described water recoverer, heat up by the water wall at this vapourizing furnace and the indirect heat exchange that generates gas,

Dispose the intensification water supply system from the water wall of described vapourizing furnace to the water wash column in the downstream side that is arranged on described de-dirt device, make the part of the intensification water after the water wall of this vapourizing furnace heats up run underneath to described water wash column by this intensification water supply system.

6. carbon according to claim 3 is the gasification power generation system of fuel, it is characterized in that,

To in described water recoverer, reclaim and be supplied to the water of the heat recovery section of described vapourizing furnace, by heating up with the indirect heat exchange that generates gas in the heat recovery section of this vapourizing furnace,

Dispose the intensification water supply system from the heat recovery section of described vapourizing furnace to the water wash column in the downstream side that is arranged on described de-dirt device, the part of the intensification water after making to heat up in the heat recovery section of this vapourizing furnace runs underneath to described water wash column by this intensification water supply system.

7. carbon according to claim 4 is the gasification power generation system of fuel, it is characterized in that,

To in described water recoverer, reclaim and be supplied to the water of the described cooling tower in the downstream side that is arranged on described vapourizing furnace, by heating up with the indirect heat exchange that generates gas in this cooling tower, generate water vapor, and make the water vapor of this generation run underneath to the downstream side of described cooling tower together with generation gas.

8. be the gasification power generation system of fuel according to the described carbon of any one in claim 1 to 7, it is characterized in that,

Dispose:

Be arranged on the downstream side on described absorption tower, separate hydrogen sulfide and carbonic acid gas from the absorption liquid that has absorbed hydrogen sulfide and carbonic acid gas this absorption tower, the regenerator column of the absorption liquid of regenerating;

Be arranged on the downstream side of described regenerator column, from the isolated hydrogen sulfide of self-absorption liquid separates with hydrogen sulfide with separating carbon dioxide in carbonic acid gas this regenerator column carbonic acid gas/hydrogen sulfide separator; And

Carbonic acid gas plenum system from described carbonic acid gas/hydrogen sulfide separator to described vapourizing furnace,

Wherein, will in described carbonic acid gas/hydrogen sulfide separator, be supplied to described vapourizing furnace by this carbonic acid gas plenum system by isolated carbonic acid gas.

9. be the gasification power generation system of fuel according to the described carbon of any one in claim 1 to 8, it is characterized in that,

The exit of the described de-dirt equipment arranged in the downstream side of described vapourizing furnace is provided for detecting the thermometer of the temperature that generates gas,

Be provided for regulating the flow rate regulating valve of the feed rate of water coolant in described water coolant plenum system,

According to the temperature by the detected generation gas of described thermometer, regulate the feed rate of water coolant by described flow rate regulating valve, any one the feed rate of water coolant water coolant is supplied to described vapourizing furnace, described heat recovery section and described cooling tower from described water recoverer by described water coolant plenum system is controlled.

10. carbon according to claim 3 is the gasification power generation system of fuel, it is characterized in that,

Dispose branch's pipe arrangement, its water coolant plenum system that makes the part of the water that will reclaim in described water recoverer be supplied to the heat recovery section be arranged on described vapourizing furnace as water coolant from this water recoverer forms a plurality of branches, be divided into the multistage heat recovery section that is supplied to described vapourizing furnace

Be provided with the nozzle that water coolant is injected into to the heat recovery section of described vapourizing furnace in these branch's pipe arrangements, and in being divided into each multistage branch's pipe arrangement, flow rate regulating valve be set respectively,

Heat recovery section outlet at described vapourizing furnace is provided with the thermometer for detection of the temperature that generates gas,

Be provided with the detected temperatures according to the generation gas of the outlet of the heat recovery section by the detected vapourizing furnace of described thermometer, carry out the control device of the aperture of the described flow rate regulating valve of operation setting in branch's pipe arrangement,

Wherein, detected temperatures according to the generation gas in the heat recovery section exit by the detected vapourizing furnace of described thermometer, regulate the aperture of described flow rate regulating valve by this control device, the nozzle ejection of adjusting from be arranged on these branch's pipe arrangements be to the emitted dose of the water coolant of the heat recovery section of described vapourizing furnace, controls the temperature of generation gas of the heat recovery section outlet of described vapourizing furnace.

11. carbon according to claim 3 is the gasification power generation system of fuel, it is characterized in that,

Described vapourizing furnace heat recovery section forms with the water wall structure that uses a plurality of water cooling tubes,

Be provided with the hole or the nozzle that the part of water coolant are injected into to the generation gas that flows down the vapourizing furnace heat recovery section in these water cooling tubes,

The water coolant of supplying with from described water recoverer is heated up by the heat that generates gas described vapourizing furnace heat recovery section, and the hole of the intensification water after heating up in this vapourizing furnace heat recovery section from be arranged on described water cooling tube or nozzle ejection are to generating gas.

12. carbon according to claim 3 is the gasification power generation system of fuel, it is characterized in that,

Be provided with:

The tank of the part of the water that storage is reclaimed from the waste gas of internal combustion turbine by water recoverer;

The water that to store in this tank is directed into the supplying tubing of the heat recovery section of vapourizing furnace;

Be arranged in described supplying tubing the pump by the water supply of storing in tank to the heat recovery section of described vapourizing furnace;

Make water be back to the pipe arrangement that returns of tank from the heat recovery section of described vapourizing furnace;

Be arranged on described returning in pipe arrangement, the flow rate regulating valve that the flow of mobile water is regulated between the heat recovery section of described vapourizing furnace and tank to by this, returning to pipe arrangement;

Be arranged on the outlet of the heat recovery section of described vapourizing furnace, the thermometer that the temperature of the generation gas in the exit of the heat recovery section of this vapourizing furnace is detected; And

According to the temperature of the generation gas in the exit of the heat recovery section by the detected vapourizing furnace of this thermometer, regulate the 2nd control device of the flow of the water based on described flow rate regulating valve,

Wherein, temperature according to the generation gas in the exit of the heat recovery section by the detected vapourizing furnace of described thermometer, the aperture of by described the 2nd control device, regulating described flow rate regulating valve, control the temperature of generation gas in the heat recovery section exit of described vapourizing furnace.

13. be the gasification power generation system of fuel according to the described carbon of any one in claim 1 to 8, it is characterized in that,

Be provided with:

The gas gas-heat exchanger that the waste gas that will go out from discharge of gas turbine is heated the combustion air of internal combustion turbine with air generation heat exchange as thermal source and the gas turbine combustion that is supplied to gas turbine burner; And

Make the waste gas after described gas gas-heat exchanger cooling, and make the condensate and heat exchanger of the condensate moisture that comprises in described waste gas,

Wherein, the moisture in will the waste gas of condensation in described condensate and heat exchanger is supplied to described water recoverer.

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