CN207738447U - A kind of system that catalytic reforming high temperature coke oven coal gas produces also Primordial Qi - Google Patents
A kind of system that catalytic reforming high temperature coke oven coal gas produces also Primordial Qi Download PDFInfo
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Abstract
The utility model provides a kind of system that catalytic reforming high temperature coke oven coal gas produces also Primordial Qi.The system includes：Partial oxidation unit is equipped with high temperature coke oven gas entry, oxygen intake and partial oxidation gas exit；Mixer, is equipped with partial oxidation gas entry, steam inlet and mixed gas outlet, and partial oxidation gas entry is connected with the partial oxidation gas exit of partial oxidation unit；Catalytic reforming reactor, is equipped with mixed gas entrance, hot air inlet, high temperature reduction gas entrance, the outlet of high temperature reformation gas, combustible exhaust gas outlet, and mixed gas entrance is connected with the mixed gas outlet of mixer；The inside of catalytic reforming reactor is filled with nickel-containing sponge iron；Desulfurizer is equipped with and reforms gas entrance and also Primordial Qi outlet, reforms gas entrance and is connected with the outlet of the high temperature reformation gas of catalytic reforming reactor.The utility model production cost is low, and also Primordial Qi hydrogen-carbon ratio obtained is high.
Description
Technical field
The utility model belongs to metallurgical technology field, and in particular, to a kind of catalytic reforming high temperature coke oven coal gas is produced also
The system of Primordial Qi.
Background technology
Currently, China's coke annual output is more than 400,000,000 t, coke per ton about by-product 400m3Coke-stove gas, at home and abroad coke oven
Coal gas is mainly used in methanol processed, chemical fertilizer, power generation, hydrogen manufacturing, reduced iron.It is reducing agent that traditional Iron industry, which fully relies on carbon,
And H in coke-stove gas2It is respectively 50% and 20% with methane content, only need to methane in coke-stove gas be carried out thermal cracking can obtain
Obtain 74% H2And 25% CO, in this, as direct-reduction production reducibility gas be dirt cheap, can drop significantly
The consumption of low ironmaking processes coking coal and coke.
By the coke-stove gas temperature that is generated in coking chamber of coke oven at 750 DEG C -850 DEG C, the wherein tar in coke-stove gas
Exist in a gaseous form at this temperature, content can reach 80g/m3-120g/m3.Higher boiling tar can then condense simultaneously in pipeline
It is combined with dust, is accumulated in pipeline, block pipeline.In addition, containing noxious material in tar ingredients, to entire production system personnel
Health constitutes a threat to.Contain more polyoxybiontic aldehydes matter in tar, be easy to cause the secondary pollution of waste water.If utilizing coke oven
Coal gas high-temperature heat, can be by tar, gaseous hydrocarbons and the CO in coke-stove gas using catalystic reforming method2And H2O reaction generate CO and
H2, it can be achieved that effective removing to tar, increases gas yield.
Tar removal methods include physics removal method and chemical stripping method at present.Physics removal method refers to being touched by inertia
Hit, intercept, spreading, electrostatic force, gravity the effects that the tar that has generated mutually is shifted from gas phase to condensation, is detached from, into
And reach separation with gas products, reduce tar content in gasification product, include mainly WATER-WASHING METHOD, electric tar method etc..Chemistry
Removal method refers to converting tar macromolecular to CO, H by different chemical reactions2、CH4The process of equal micro-molecular gas, mainly
Including thermal cracking and catforming.Common catalyst is dolomite, olivine etc., and the activity that is used to be catalyzed and reform is golden
Belong to relatively is mostly the substances such as iron, nickel.
Catalytic reforming reaction mainly include tar, the cracking reaction of hydro carbons and water and carbon gasification reaction.Tar is in high temperature
Under the action of catalyst, it is cracked into C, CnHm、H2、CO、CH4、CO2.Meanwhile CnHm、CH4Continue to be cracked to form C, H2, H2O is anti-with C
CO, H should be generated2.Wherein, CnHmFor alkane, alkene or alkynes.
Existing coke-stove gas system also Primordial Qi raw material is that the high temperature coke oven raw coke oven gas of coke oven removes tar by washing, purifying
Cold conditions coke-stove gas afterwards, by dry reforming (CH4+CO2=2CO+2H2) and the whole (CH of weight in wet base4+H2O=CO+3H2) produce reduction
Gas.Using the type catalysts such as Ni-based in reforming process, catalyst is at high price and easy inactivation, catalytic process need outside
Heating furnace is set and carries out heat supply, energy consumption is high.Traditional handicraft does not make full use of the physical thermal and chemical energy of tar, does not utilize height yet
The sensible heat of warm coke-stove gas needs to consume a large amount of ammonium hydroxide, noxious material is contained in tar, larger to water pollution.It is necessary to propose one
Kind can directly be removed tar using high temperature coke oven raw coke oven gas and produce also Primordial Qi technique, and also Primordial Qi is produced with least cost.
Utility model content
In view of the problems of the existing technology and defect, the purpose of this utility model are to provide a kind of catalytic reforming high-temperature coke
Producer gas produces the system and method for also Primordial Qi, rationally utilizes the waste heat and chemical heat of high temperature coke oven raw coke oven gas, carries out catalysis weight
Whole removing tar produces also Primordial Qi, and high efficiente callback is using tar and effectively improves also Primordial Qi yield.
The system that catalytic reforming high temperature coke oven coal gas provided by the utility model produces also Primordial Qi, including：
Partial oxidation unit is equipped with high temperature coke oven gas entry, oxygen intake and partial oxidation gas exit；
Mixer, is equipped with partial oxidation gas entry, steam inlet and mixed gas outlet, and the partial oxidation coal gas enters
Mouth is connected with the partial oxidation gas exit of the partial oxidation unit；
Catalytic reforming reactor is equipped with mixed gas entrance, hot air inlet, high temperature reduction gas entrance, high temperature reformation gas
Outlet, combustible exhaust gas outlet, the mixed gas entrance are connected with the mixed gas outlet of the mixer；The catalytic reforming
The inside of reactor is filled with nickel-containing sponge iron；
Desulfurizer is equipped with and reforms gas entrance and also Primordial Qi outlet, the reformation gas entrance and the catalytic reforming reaction
The high temperature reformation gas outlet of device is connected.
In some embodiments of the utility model, the system also includes waste heat boiler, the waste heat boiler is equipped with cold
Water inlet, high temperature reformation gas entrance, steam (vapor) outlet and the outlet of low-temperature reformate gas, the high temperature reformation gas entrance and catalysis weight
The high temperature reformation gas outlet of whole reactor is connected, and the steam (vapor) outlet is connected with the steam inlet of the mixer, the low temperature
Gas outlet is reformed with the reformation gas entrance of the desulfurizer to be connected.
In some embodiments of the utility model, the system also includes combustion chamber, the combustion chamber is equipped with flammable useless
Gas entrance and waste gas outlet, the combustible exhaust gas entrance are connected with the outlet of the combustible exhaust gas of the catalytic reforming reactor.
In some embodiments of the utility model, the combustion chamber is additionally provided with cryogenic oxygen entrance and high-temperature oxygen goes out
Mouthful, the high-temperature oxygen outlet is connected with the oxygen intake of the partial oxidation unit.
In some embodiments of the utility model, the catalytic reforming reactor is fixed-bed type retort, described to contain
The lower section of nickel sponge iron is equipped with ceramic layers of balls, and the lower section of the ceramics layers of balls is equipped with the apertured grills for supporting the nickel-containing sponge iron
Plate.
The utility model provides energy using the thermal energy of high temperature coke oven coal gas, also using cheap laterite nickel ore oxidized pellet
The porous nickel-containing sponge iron that original obtains ensures that catalyst has higher porosity and specific surface area, realizes tar, CH4Fill
Divide catalytic reforming reaction and reduce the pressure loss, achievees the purpose that removing tar, raising restore tolerance, coke-stove gas can be reduced
The purification energy consumption and cost of middle tar.
The utility model is rationally utilized the waste heat and chemical heat of high temperature coke oven coal gas, carry out catalytic reforming removing tar,
Also Primordial Qi is produced, high efficiente callback is using tar and effectively improves also Primordial Qi yield.Meanwhile with H2O is cracking agent, and Gao Qing can be obtained
Carbon ratio also Primordial Qi reduces CO2Discharge, high-content H2Sponge iron degree of metalization can be effectively improved, it is existing to reduce analysis carbon in reduction shaft furnace
As.Tar is removed, higher boiling tar is can inhibit and is accumulated in pipeline, block pipeline, can ensure the stable operation of process equipment.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
Fig. 1 is the knot that a kind of catalytic reforming high temperature coke oven coal gas in the utility model embodiment produces the also system of Primordial Qi
Structure schematic diagram.
Fig. 2 is a kind of structural schematic diagram of catalytic reforming reaction unit in the utility model embodiment.
Fig. 3 is the technological process that a kind of catalytic reforming high temperature coke oven coal gas in the utility model embodiment produces also Primordial Qi
Figure.
Specific implementation mode
Below in conjunction with drawings and examples, specific embodiment of the present utility model is described in more details, with
Just the advantages of better understood when the embodiment of the utility model and its various aspects.However, specific implementations described below
Mode and embodiment are for illustrative purposes only, rather than limitations of the present invention.
Fig. 1 show the system that the preferred catalytic reforming high temperature coke oven coal gas of the utility model produces also Primordial Qi, including portion
Divide oxidation unit 1, mixer 2, the first catalytic reforming reactor 3, the second catalytic reforming reactor 3 ', waste heat boiler 4, desulfurization dress
Set 5 and combustion chamber 6.
Partial oxidation unit 1 is equipped with high temperature coke oven gas entry 101, oxygen intake 102 and partial oxidation gas exit
103。
High temperature coke oven gas entry 101 and the setting of oxygen intake 102 are in 1 top of partial oxidation unit, the burner with top
104 are connected.High temperature coke oven coal gas and oxygen are by 104 entering part oxidation unit 1 of burner, being uniformly mixed and rapid generating unit
Divide oxidation reaction.
Mixer 2 is equipped with partial oxidation gas entry 201, steam inlet 202 and mixed gas outlet 203, partial oxidation
Gas entry 201 is connected with the partial oxidation gas exit 103 of partial oxidation unit 1.Mixer 2 is used for mixing portion oxidized coal
Gas and steam.
First catalytic reforming reactor 3 is equipped with the first mixed gas entrance 301, the first hot air inlet, the first high temperature also
Primordial Qi entrance, the first high temperature reformation gas outlet 303 and first combustible exhaust gas outlet 304, the first mixed gas entrance 301 with mix
The mixed gas outlet 203 of device 2 is connected.
Corresponding second catalytic reforming reactor 3 ' is equipped with the second mixed gas entrance 301 ', the second hot air inlet, the
Two high temperature reduction gas entrances, the outlet 303 ' of the second high temperature reformation gas and the second combustible exhaust gas outlet 304 ', the second mixed gas enters
Mouth 301 ' is connected with the mixed gas outlet 203 of mixer 2.
The hot air inlet and high temperature of first catalytic reforming reactor, 3 and second catalytic reforming reactor 3 ' shown in FIG. 1
Also Primordial Qi entrance merges the design that device is simplified for entrance 302 and entrance 302 ' respectively, saves space, certainly, also may be used
To separate, do not need to be particularly limited to.
This hair catalyst used is nickel-containing sponge iron, the first catalytic reforming reactor 3 and the second catalytic reforming reactor
3 ' inside is filled with nickel-containing sponge iron.The utility model reacts catalytic reforming reaction with catalyst regeneration same anti-
It answers in device and carries out, catalytic reforming reactor is also catalyst regenerator.
The first catalytic reforming reactor 3 and the second catalytic reforming reactor 3 ' of Fig. 1 is connected in parallel, and constitutes catalytic reforming
Reaction member, be arranged two catalytic reforming reactors can alternately catalytic reforming reaction, realize system continuity run.It needs
, it is noted that the application can only can also include multiple comprising a catalytic reforming reactor, matched according to actual needs
It sets, structure shown in FIG. 1 need not be limited to.
Fig. 2 is the structural schematic diagram of preferred catalytic reforming reaction unit.First catalytic reforming reactor 3 and second is catalyzed
Reforming reactor 3 ' is fixed-bed type retort, the catalyst of fixed bed distribution is supported by by catalyst support frame, wherein contain
Nickel sponge iron 31 divides for upper layer and lower layer, and the lower section of every layer of nickel-containing sponge iron 31 is equipped with ceramic layers of balls 32, under ceramic layers of balls 32
Side is equipped with the apertured grills plate 33 of support nickel-containing sponge iron 31.The purpose that ceramic layers of balls 32 is arranged is to prevent catalyst from containing nickel sponge
Iron 31 and 33 high temperature bonding of apertured grills plate.Nickel-containing sponge iron 31 is further divided into three layers or more, ceramic layers of balls 32 and porous lattice
Screen more than 33, the pressure that furnace charge is received is smaller, reduces the risk of catalyst breakage.
V1-V8 is high-temperature valve in Fig. 2, controls the disengaging of various gases.Wherein, outside the valve plate of high-temperature valve, valve seat and valve
Shell all water flowings cool down.
Waste heat boiler 4 is equipped with high temperature reformation gas entrance 401, cold water inlet 402, low-temperature reformate gas outlet 403 and steam and goes out
The 303, second catalysis of the first high temperature reformation gas outlet of mouth 404, high temperature reformation gas entrance 401 and the first catalytic reforming reactor 3
The second high temperature reformation gas outlet 303 ' of reforming reactor 3 ' is connected, 202 phase of steam inlet of steam (vapor) outlet 404 and mixer 2
Even.
Waste heat boiler 4 recycles the waste heat of high temperature reformation gas, prepares steam and is used for mixer 2, reduces system energy
The waste of amount reduces the cost of entire technique.
In the other embodiment of the utility model, can also there is no waste heat boiler 4, be according to the configuration of technique specific requirements
It can.
Desulfurizer 5, which is equipped with, reforms gas entrance 501 and also Primordial Qi outlet 502, reforms gas entrance 501 and waste heat boiler 4
Low-temperature reformate gas outlet 403 is connected.Desulfurizer 5 is used to remove the sulphur in reformed gas.
When system is free of waste heat boiler 4, reforms gas entrance 501 and the high temperature reformation gas of catalytic reforming reactor exports phase
Even.
Combustion chamber 6 is equipped with combustible exhaust gas entrance 601 and waste gas outlet 604, and combustible exhaust gas entrance 601 is catalyzed with first respectively
The second combustible exhaust gas that first combustible exhaust gas of reforming reactor 3 exports the 304, second catalytic reforming reactor 3 ' exports 304 ' phases
Even.
Combustion chamber 6 is for handling the combustible exhaust gas being discharged from catalytic reforming reactor, in other realities of the utility model
It applies in example, the device can not also be contained, combustible exhaust gas can be otherwise utilized or be handled using gas apparatus.
In preferred embodiment shown in Fig. 1, combustion chamber 6 is additionally provided with cryogenic oxygen entrance 602 and high-temperature oxygen outlet
603, high-temperature oxygen outlet 603 is connected with the oxygen intake 102 of partial oxidation unit 1.Heat using burn combustible exhaust gas is pre-
Hot oxygen reduces the waste of system capacity, reduces the cost of entire technique.
Fig. 3, which show the utility model and reforms high temperature coke oven coal gas using system catalytic shown in FIG. 1, produces also Primordial Qi
Method includes the following steps：
Partial oxidation：By in high temperature coke oven coal gas and oxygen infeed section oxidation unit 1, high temperature coke oven coal gas is sent out with oxygen
First portion oxidation reaction obtains part oxidized coal gas.
Mixing：Partial oxidation coal gas and steam are sent into mixer 2 and are uniformly mixed, mixed gas is obtained.
Catalytic reforming：Mixed gas is sent into the first catalytic reforming reactor 3 or the second catalytic reforming reactor 3 ',
Under the action of nickel-containing sponge iron, tar and water-splitting in mixed gas generate also Primordial Qi, obtain reformed gas.
Heat exchange：Reformed gas is sent into waste heat boiler 4 and prepares steam with cold water heat exchange, steam obtained is sent into and is mixed
In device 2, high temperature reformation gas becomes low-temperature reformate gas.
Desulfurization：Low-temperature reformate gas is sent into desulfurization in desulfurizer 5, obtains also Primordial Qi.
Catalyst regeneration：After nickel-containing sponge iron inactivation, hot-air is sent into the catalysis of the first catalytic reforming reactor 3 or second
In reforming reactor 3 ', by the low activity carbon distribution on the surface of nickel-containing sponge iron and coke-like object burning totally, and in catalytic process
The nickel sulfide and iron sulfide oxidation sweetening of formation react, and obtain nickel oxide, iron oxide；Then high temperature reduction pneumatic transmission is entered into catalysis weight
In whole reactor, nickel oxide, iron oxide are reduced to metallic iron, metallic nickel.
Handle combustible exhaust gas：Process catalyst regeneration step also will produce combustible exhaust gas, and combustible exhaust gas feeding combustion chamber 6 is burnt
It discharges again afterwards.The heat preheated oxygen that also can be used institute's combustible exhaust gas to burn, by the oxygen infeed section oxidation unit 1 after preheating
In.
As described above, waste heat boiler 4 and combustion chamber 6, therefore the above method are free of in the utility model section Example
Also heat exchange step and processing combustible exhaust gas step be may not include.
Contain nickel sponge through what gas-based reduction obtained using catalyst for cheap laterite nickel ore oxidized pellet in the utility model
Iron.Laterite nickel ore oxidized pellet is ferronickel powder and lateritic nickel ore powder mixing pelletizing, and oxidized roast obtains, and is incorporated ferronickel
Alloyed powder can improve the nickel content and iron content of catalyst, improve the conversion ratio of the hydro carbons such as tar, methane.In the utility model
In preferred embodiment, the mass percentage of nickel is 3%-5% in nickel-containing sponge iron, the mass percentage of iron is 75%-
80%, the grain size of the nickel-containing sponge iron is 6mm-10mm.
High temperature coke oven coal gas and oxygen containing tar are respectively by the way that in 104 entering part oxidation unit 1 of burner, mixing is equal
It is even and partial oxidation reaction occurs rapidly.In the utility model preferred embodiment, the volume of oxygen and high temperature coke oven coal gas
Than for 0.08-0.14:1.750 DEG C of -850 DEG C of high temperature coke oven coal gas generating portions being discharged from coke oven after reaction aoxidize coal gas,
Its temperature is about 950 DEG C -1000 DEG C.Oxygen is preferably preheated before hybrid reaction, about 500 DEG C -700 DEG C of preheating temperature.Such as
Shown in Fig. 3, oxygen preheating can be source by the heat that combustion chamber 6 generates.High temperature coke oven coal gas and oxygen generation partial oxidation are anti-
It answers, which part H2、CH4, tar reacted with oxygen, enter catalytic reforming reactor before, reduce coke in advance to a certain extent
CH in producer gas4, tar content.
950 DEG C -1000 DEG C of partial oxidation coal gas and the high-temperature steam of preheating are passed through catalysis weight after 2 mixing of mixer
Whole reactor is reacted.In the utility model preferred embodiment, the volume ratio of steam and partial oxidation coal gas is 0.2-
0.4:1。
When catalyst temperature is heated to about 850 DEG C, start to be passed through 950 DEG C -1000 into the first catalytic reforming reactor 3
DEG C the partial oxidation coal gas for being mixed with steam need to open high-temperature valve V1 and high-temperature valve V5 first, remaining valve is in before being passed through
Closed state, under the effect of the catalyst, tar in gas is cracked into C, C to mixed gasnHm、H2、CO、CH4、CO2.Meanwhile
CnHm、CH4Continue to be cracked to form C, H2, H2O is reacted with the C that cracking is formed generates CO, H2.Tar conversion up to 95% or more,
CH4Conversion ratio reaches 90% or more, and the removal efficiency of naphthalene can reach 95%.
After catalyst is inactivated using a period of time in the first catalytic reforming reactor 3, high-temperature valve V2 and high-temperature valve are opened
V6 closes high-temperature valve V1 and high-temperature valve V5, and similarly remaining valve is closed, and starts to be switched to the second catalytic reforming reaction
Device 3 ' is reacted.At this point, the first catalytic reforming reactor 3 is catalyst regenerator, high-temperature valve V3 and high-temperature valve V7 is opened, first
700 DEG C of hot-airs are passed through, low activity carbon distribution, the coke-like object that catalyst surface is formed burn totally, and will be in catalytic process
Nickel sulfide, the iron sulfide oxidation sweetening of formation, production nickel oxide, iron oxide.The high-temperature flue gas of formation discharges behind combustion chamber 6.
Finally, hot-air is switched to thermal reduction gas, reduction temperature degree is 900 DEG C, and iron nickel oxide is reduced to metallic iron, nickel, real
The regeneration of existing catalyst closes high-temperature valve V3 and high-temperature valve V7 after the completion of reduction.So constantly repeat alternately, it can be achieved that urging
The continuous and steady operation of change.
Below with reference to specific embodiment, the utility model is illustrated.Institute's taking technique condition value in following embodiments
It is illustrative, can use numberical range as shown in aforementioned utility model content, for not specifically specified technological parameter,
It can refer to routine techniques progress.Detection method used in following embodiments is the detection method of industry routine.
Embodiment 1
The present embodiment reforms high temperature coke oven coal gas using system catalytic shown in FIG. 1 and produces also Primordial Qi.Used in the present embodiment
High temperature coke oven coal gas from coke oven be discharged, high temperature coke oven coal gas 106g/m containing tar3, crude benzol 45g/m3；Naphthalene accounts for ratio in tar
It is 10%.The temperature of high temperature coke oven coal gas is 750 DEG C, and oxygen temperature is 600 DEG C, and vapor (steam) temperature is 200 DEG C.
Partial oxidation：By in high temperature coke oven coal gas and oxygen infeed section oxidation unit 1, high temperature coke oven coal gas is sent out with oxygen
First portion oxidation reaction obtains part oxidized coal gas.The volume ratio of oxygen and high temperature coke oven coal gas is 0.14:1, obtain part oxygen
The temperature for changing coal gas is 950 DEG C.
Mixing：Partial oxidation coal gas and steam are sent into mixer 2 and are uniformly mixed, mixed gas is obtained.Steam and portion
It is 0.3 to divide the volume ratio of oxidation coal gas:1.
Catalytic reforming：Mixed gas is sent into the first catalytic reforming reactor 3 or the second catalytic reforming reactor 3 ',
Under the action of nickel-containing sponge iron, tar and water-splitting in mixed gas generate also Primordial Qi, obtain reformed gas.
Heat exchange：Reformed gas is sent into waste heat boiler 4 and prepares steam with cold water heat exchange, steam obtained is sent into and is mixed
In device 2, high temperature reformation gas becomes low-temperature reformate gas.
Desulfurization：Low-temperature reformate gas is sent into desulfurization in desulfurizer 5, obtains also Primordial Qi.Ingredient is 57% also in Primordial Qi
H2, 28%CO, 3%CH4, 3%C2+, 3%CO2, 2%N2, 4%H2O；Tar conversion is 95%, CH4Conversion ratio is 91%, naphthalene
Removal efficiency can reach 95%.
Catalyst regeneration：After nickel-containing sponge iron inactivation, hot-air is sent into the catalysis of the first catalytic reforming reactor 3 or second
In reforming reactor 3 ', by the low activity carbon distribution on the surface of nickel-containing sponge iron and coke-like object burning totally, and in catalytic process
The nickel sulfide and iron sulfide oxidation sweetening of formation react, and obtain nickel oxide, iron oxide；Then high temperature reduction pneumatic transmission is entered into catalysis weight
In whole reactor, nickel oxide, iron oxide are reduced to metallic iron, metallic nickel.
Handle combustible exhaust gas：The combustible exhaust gas that process catalyst regeneration step generates is sent into after combustion chamber 6 is burnt and is discharged again；With
The heat preheated oxygen of combustible exhaust gas burning, will be in the oxygen infeed section oxidation unit 1 after preheating.
Embodiment 2
The present embodiment reforms high temperature coke oven coal gas using system catalytic shown in FIG. 1 and produces also Primordial Qi.Used in the present embodiment
High temperature coke oven coal gas from coke oven be discharged, high temperature coke oven coal gas 106g/m containing tar3, crude benzol 45g/m3；Naphthalene accounts for ratio in tar
It is 10%.The temperature of high temperature coke oven coal gas is 850 DEG C, and oxygen temperature is 500 DEG C, and vapor (steam) temperature is 250 DEG C.
Partial oxidation：By in high temperature coke oven coal gas and oxygen infeed section oxidation unit 1, high temperature coke oven coal gas is sent out with oxygen
First portion oxidation reaction obtains part oxidized coal gas.The volume ratio of oxygen and high temperature coke oven coal gas is 0.08:1, obtain part oxygen
The temperature for changing coal gas is 960 DEG C.
Mixing：Partial oxidation coal gas and steam are sent into mixer 2 and are uniformly mixed, mixed gas is obtained.Steam and portion
It is 0.4 to divide the volume ratio of oxidation coal gas:1.
Catalytic reforming：Mixed gas is sent into the first catalytic reforming reactor 3 or the second catalytic reforming reactor 3 ',
Under the action of nickel-containing sponge iron, tar and water-splitting in mixed gas generate also Primordial Qi, obtain reformed gas.
Heat exchange：Reformed gas is sent into waste heat boiler 4 and prepares steam with cold water heat exchange, steam obtained is sent into and is mixed
In device 2, high temperature reformation gas becomes low-temperature reformate gas.
Desulfurization：Low-temperature reformate gas is sent into desulfurization in desulfurizer 5, obtains also Primordial Qi.Ingredient is 59% also in Primordial Qi
H2, 26%CO, 3%CH4, 3%C2+, 3%CO2, 2%N2, 4%H2O；Tar conversion is 95%, CH4Conversion ratio is 92%, naphthalene
Removal efficiency can reach 95%.
Catalyst regeneration：After nickel-containing sponge iron inactivation, hot-air is sent into the catalysis of the first catalytic reforming reactor 3 or second
In reforming reactor 3 ', by the low activity carbon distribution on the surface of nickel-containing sponge iron and coke-like object burning totally, and in catalytic process
The nickel sulfide and iron sulfide oxidation sweetening of formation react, and obtain nickel oxide, iron oxide；Then high temperature reduction pneumatic transmission is entered into catalysis weight
In whole reactor, nickel oxide, iron oxide are reduced to metallic iron, metallic nickel.
Handle combustible exhaust gas：The combustible exhaust gas that process catalyst regeneration step generates is sent into after combustion chamber 6 is burnt and is discharged again；With
The heat preheated oxygen of combustible exhaust gas burning, will be in the oxygen infeed section oxidation unit 1 after preheating.
Embodiment 3
The present embodiment reforms high temperature coke oven coal gas using system catalytic shown in FIG. 1 and produces also Primordial Qi.Used in the present embodiment
High temperature coke oven coal gas from coke oven be discharged, high temperature coke oven coal gas 106g/m containing tar3, crude benzol 45g/m3；Naphthalene accounts for ratio in tar
It is 10%.The temperature of high temperature coke oven coal gas is 800 DEG C, and oxygen temperature is 700 DEG C, and vapor (steam) temperature is 300 DEG C.
Partial oxidation：By in high temperature coke oven coal gas and oxygen infeed section oxidation unit 1, high temperature coke oven coal gas is sent out with oxygen
First portion oxidation reaction obtains part oxidized coal gas.The volume ratio of oxygen and high temperature coke oven coal gas is 0.11:1, obtain part oxygen
The temperature for changing coal gas is 1000 DEG C.
Mixing：Partial oxidation coal gas and steam are sent into mixer 2 and are uniformly mixed, mixed gas is obtained.Steam and portion
It is 0.2 to divide the volume ratio of oxidation coal gas:1.
Catalytic reforming：Mixed gas is sent into the first catalytic reforming reactor 3 or the second catalytic reforming reactor 3 ',
Under the action of nickel-containing sponge iron, tar and water-splitting in mixed gas generate also Primordial Qi, obtain reformed gas.
Heat exchange：Reformed gas is sent into waste heat boiler 4 and prepares steam with cold water heat exchange, steam obtained is sent into and is mixed
In device 2, high temperature reformation gas becomes low-temperature reformate gas.
Desulfurization：Low-temperature reformate gas is sent into desulfurization in desulfurizer 5, obtains also Primordial Qi.Ingredient is 58% also in Primordial Qi
H2, 30%CO, 2%CH4, 3%C2+, 2%CO2, 2%N2, 3%H2O；Tar conversion is 97%, CH4Conversion ratio is 95%, naphthalene
Removal efficiency can reach 97%.
Catalyst regeneration：After nickel-containing sponge iron inactivation, hot-air is sent into the catalysis of the first catalytic reforming reactor 3 or second
In reforming reactor 3 ', by the low activity carbon distribution on the surface of nickel-containing sponge iron and coke-like object burning totally, and in catalytic process
The nickel sulfide and iron sulfide oxidation sweetening of formation react, and obtain nickel oxide, iron oxide；Then high temperature reduction pneumatic transmission is entered into catalysis weight
In whole reactor, nickel oxide, iron oxide are reduced to metallic iron, metallic nickel.
Handle combustible exhaust gas：The combustible exhaust gas that process catalyst regeneration step generates is sent into after combustion chamber 6 is burnt and is discharged again；With
The heat preheated oxygen of combustible exhaust gas burning, will be in the oxygen infeed section oxidation unit 1 after preheating.
Comparative example
High temperature coke oven coal gas is handled using ammonia spray technique, obtained also Primordial Qi ingredient is 60%H2, 8%
CO, 27%CH4, 4%C2+, 2%CO2, 2%N2, 0.5%O2。
From above-described embodiment and comparative example it is found that being reformed using system and method system catalytic provided by the utility model high
Warm coke-stove gas produces also Primordial Qi, and the also Primordial Qi hydrogen-carbon ratio of acquisition is high.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the art, other differences can also be made on the basis of the above description
The variation or variation of form.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out aobvious and
Among the variation or variation being clear to are still in the scope of protection of the utility model.
Claims (5)
1. the system that a kind of catalytic reforming high temperature coke oven coal gas produces also Primordial Qi, which is characterized in that including：
Partial oxidation unit is equipped with high temperature coke oven gas entry, oxygen intake and partial oxidation gas exit；
Mixer, be equipped with partial oxidation gas entry, steam inlet and mixed gas outlet, the partial oxidation gas entry with
The partial oxidation gas exit of the partial oxidation unit is connected；
Catalytic reforming reactor, exported equipped with mixed gas entrance, hot air inlet, high temperature reduction gas entrance, high temperature reformation gas,
Combustible exhaust gas exports, and the mixed gas entrance is connected with the mixed gas outlet of the mixer；The catalytic reforming reaction
The inside of device is filled with nickel-containing sponge iron；
Desulfurizer is equipped with and reforms gas entrance and also Primordial Qi outlet, described to reform gas entrance and the catalytic reforming reactor
The outlet of high temperature reformation gas is connected.
2. system according to claim 1, which is characterized in that the system also includes waste heat boiler, the waste heat boiler
Equipped with cold water inlet, high temperature reformation gas entrance, steam (vapor) outlet and low-temperature reformate gas export, the high temperature reformation gas entrance with it is described
The high temperature reformation gas outlet of catalytic reforming reactor is connected, and the steam (vapor) outlet is connected with the steam inlet of the mixer, institute
The outlet of low-temperature reformate gas is stated with the reformation gas entrance of the desulfurizer to be connected.
3. system according to claim 1, which is characterized in that the system also includes combustion chamber, the combustion chamber is equipped with
The combustible exhaust gas of combustible exhaust gas entrance and waste gas outlet, the combustible exhaust gas entrance and the catalytic reforming reactor exports phase
Even.
4. system according to claim 3, which is characterized in that the combustion chamber is additionally provided with cryogenic oxygen entrance and high temperature oxygen
Gas exports, and the high-temperature oxygen outlet is connected with the oxygen intake of the partial oxidation unit.
5. system according to claim 1, which is characterized in that the catalytic reforming reactor is fixed-bed type retort,
The lower section of the nickel-containing sponge iron is equipped with ceramic layers of balls, and the lower section of the ceramics layers of balls, which is equipped with, supports the more of the nickel-containing sponge iron
Hole flase floor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113880047A (en) * | 2021-11-08 | 2022-01-04 | 深圳市英策科技有限公司 | Hydrogen production device and method for methane-containing raw material |
| CN115926853A (en) * | 2022-12-27 | 2023-04-07 | 华中科技大学 | Self-heating catalytic reforming reaction system for cracked gas |
-
2017
- 2017-12-08 CN CN201721696866.6U patent/CN207738447U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113880047A (en) * | 2021-11-08 | 2022-01-04 | 深圳市英策科技有限公司 | Hydrogen production device and method for methane-containing raw material |
| CN113880047B (en) * | 2021-11-08 | 2024-04-09 | 深圳市英策科技有限公司 | Hydrogen production device and method for methane-containing raw material |
| CN115926853A (en) * | 2022-12-27 | 2023-04-07 | 华中科技大学 | Self-heating catalytic reforming reaction system for cracked gas |
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