CN106477597A - The comprehensive utilization of Filter Tuber For Clean Coal tail gas produces the environment-protecting clean method of hydrocyanic acid derivant - Google Patents
The comprehensive utilization of Filter Tuber For Clean Coal tail gas produces the environment-protecting clean method of hydrocyanic acid derivant Download PDFInfo
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Abstract
A kind of Filter Tuber For Clean Coal tail gas comprehensive utilization produces the environment-friendly clean process method of hydrocyanic acid derivant, it is characterized in that providing a kind of environment-friendly clean process method that raw coal carries out the purifying Filter Tuber For Clean Coal tail gas comprehensive utilization production hydrocyanic acid derivant processing and producing, Filter Tuber For Clean Coal tail gas passes through the means such as the purified treatment such as desulphurization and denitration, dehydration and pressure-variable adsorption and separates acquisition methane gas, hydrogen, carbon monoxide and tail gas, separates the methane gas obtaining, hydrogen, carbon monoxide and tail gas and produces hydrocyanic acid derivant through comprehensive utilization；Its raw coal includes bituminous coal, anthracite and the brown coal of various qualities, and indication is purifying to process the purifying process including all raw coal and brown coal upgrading acquisition Filter Tuber For Clean Coal or semicoke（Semi-coke）Etc. process, indication Filter Tuber For Clean Coal tail gas includes all raw coal and carries out purifying process and brown coal upgrading acquisition Filter Tuber For Clean Coal or semicoke（Semi-coke）All tail gas Deng generation.
Description
Technical field
One kind is related to Filter Tuber For Clean Coal tail gas comprehensive utilization environment-protecting clean method, refer to that the comprehensive utilization of Filter Tuber For Clean Coal tail gas produces the environment-protecting clean method of hydrocyanic acid derivant, pass through the separation means such as purification and pressure-variable adsorption especially with Filter Tuber For Clean Coal tail gas and separate the environment-friendly clean process method obtaining that the comprehensive utilization such as methane gas, hydrogen, carbon monoxide produces hydrocyanic acid derivant；Fully realize Filter Tuber For Clean Coal tail gas comprehensive utilization of resources and the feature of environmental protection producing hydrocyanic acid derivant technical process, belong to the environment friendly clean producing method that high efficiency of energy cleans the comprehensive utilization that becomes more meticulous.
Background technology
China's energy resources situation feature is：Rich coal, oil starvation, few gas.China's energy industry be unable to do without the utilization of coal base energy resources.The coal base energy is non-clean energy, the especially low-quality coal base energy of the coal base energy（Brown coal etc.）Direct bring great harm conventional using lower to natural environment.In recent years, with the extensive utilization of China's economic development and the coal base energy, cause natural environment drastically to deteriorate, define the sharp contradiction of economic development and environment protection.The common especially low-quality raw coal of raw coal is being directly used in the aspects such as combustion power generation, heating, daily life, and noxious pollutant discharge capacity has reached the limit, has caused the frequent generation of the extensive haze of China.Therefore, the coal base energy extensive using the reduction discharge amount of pollution that must take effective measures, reach the effect realizing clean utilization, the technical bottleneck of effectively solving economic development and environment protection contradiction.
High-efficiency cleaning in order to solve the coal base energy utilizes, and industry personage and relevant departments take series of measures.Including by common raw coal and low-quality raw coal（As brown coal）First carry out purifying（Or brown coal upgrading）Process and obtain a kind of Filter Tuber For Clean Coal（Cleaning fire coal or semicoke）, recycle this Filter Tuber For Clean Coal common raw coal of replacement and the direct burning of low-quality raw coal to be used in the aspects such as generating, heating, daily life.This Filter Tuber For Clean Coal quality is relatively pure, contain sulfur, organic nitrogen, hydro carbons, aromatics etc. and other impurity component less, can be in combustion in the common raw coal of replacement and low-quality raw coal, not only burn fully but also make combustion tail gas contain sulfur, nitre and other noxious pollutant less, dramatically reduce the purification difficulty of combustion tail gas, can really realize cleaning discharge.
But, common raw coal and low-quality raw coal can produce substantial amounts of pollutant emission during purifying process obtains Filter Tuber For Clean Coal, due to being to focus on, therefore can facilitate centralized collection.While obtaining Filter Tuber For Clean Coal, it is possible to obtain coal tar and purifying tail gas.It is familiar process that coal tar is used for comprehensive utilization；But Filter Tuber For Clean Coal tail gas is manufactured almost exclusively by burning disposal acquisition heat energy at present, there is no other preferably Application way, in Filter Tuber For Clean Coal tail gas burning process, waste gas discharge and raw coal and the direct burning of low-quality raw coal are used without difference substantially, also can produce substantial amounts of pollutant emission.Therefore, common raw coal and the purifying of low-quality raw coal are processed into for the maneuver of " pollution transportation ", inherently do not solve environmental issue, last a very long time greater area of more lasting more fearful haze will.
From this, the comprehensive utilization of the Filter Tuber For Clean Coal tail gas producing during solution raw coal is purifying is the key technology bottleneck of " Filter Tuber For Clean Coal scheme ".Filter Tuber For Clean Coal tail gas main component is hydrogen, methane, CO, CmHn, CO2、N2、O2、H2O etc..These compositions containing in Filter Tuber For Clean Coal tail gas are all the valable starting materials of synthesis fine chemicals, we are by Filter Tuber For Clean Coal tail gas development of comprehensive utilization fine chemistry industry, for synthesizing hydrocyanic acid derivant and its downstream product, realize resource and fully comprehensively utilize, developing Filter Tuber For Clean Coal tail gas comprehensive utilization frontier.
Content of the invention
The feature of the Filter Tuber For Clean Coal tail gas producing during purifying for raw coal and application present situation, it is proposed that a kind of Filter Tuber For Clean Coal tail gas comprehensive utilization produces the environment-protecting clean method of hydrocyanic acid derivant, Filter Tuber For Clean Coal tail gas passes through the means such as purified treatment and pressure-variable adsorption separation acquisition methane gas, hydrogen, carbon monoxide and tail gas and produces hydrocyanic acid derivant through comprehensive utilization；Both can be very good to realize the comprehensive utilization of resources of Filter Tuber For Clean Coal tail gas, a new raw material approach can be opened up for development natural gas fine chemistry industry it is achieved that the environment-protecting clean of the comprehensive circular economy industrial pattern of resource high-efficiency clean utilization produces again.
It is an object of the invention to provide a kind of Filter Tuber For Clean Coal tail gas comprehensive utilization produces the environment-protecting clean method of hydrocyanic acid derivant, it is characterized in that providing a kind of environment-friendly clean process method that raw coal carries out the purifying Filter Tuber For Clean Coal tail gas comprehensive utilization production hydrocyanic acid derivant processing and producing, Filter Tuber For Clean Coal tail gas passes through the means such as the purified treatment such as desulphurization and denitration, dehydration and pressure-variable adsorption and separates acquisition methane gas, hydrogen, carbon monoxide and tail gas, separates the methane gas obtaining, hydrogen, carbon monoxide and tail gas and produces hydrocyanic acid derivant through comprehensive utilization；Separate the methane gas obtaining and can possess other impurity component such as hydrogen and carbon monoxide of residual certain ingredients ratio, the relatively low methane gas of this quality requirements substitute conventional gas and are used for methane ammoxidation or the raw material of ammonification dehydrogenation production hydrocyanic acid derivant, separate the hydrogen obtaining and pass through synthetic ammonia installation and obtain ammonia and be also used for methane ammoxidation or ammonification dehydrogenation producing hydrocyanic acid and its derivant, carbon monoxide and tail gas aoxidize can and obtain formaldehyde be used for absorb hydrocyanic acid prepare hydroxyacetonitrile and its derivant for synthesizing methanol and further；The raw materials such as methane gas relatively low for above-mentioned quality requirements, ammonia are synthesized the component requirements proportioning of hydrocyanic acid reaction mixture gas according to ammoxidation or ammonification dehydrogenation, control allotment and on-line checking means to ensure that ammoxidation or ammonification dehydrogenation synthesize the stability of hydrocyanic acid reaction mixture gas using automatic control, realize ammoxidation or ammonification dehydrogenation synthesis hydrocyanic acid obtains hydrocyanic acid gas mixture；Hydrocyanic acid gas mixture directly obtain with sodium hydrate aqueous solution absorbing reaction Cyanogran. be used for synthesizing downstream hydrocyanic acid derivant, be used for above-mentioned formaldehyde and other aldehydes synthesis of hydroxy acetonitrile and other hydrocyanic acid derivant after hydrocyanic acid gas mixture deamination synthesizing downstream hydrocyanic acid derivant, hydrocyanic acid gas mixture obtains high purity liquid hydrocyanic acid by purification and is used for synthesizing downstream hydrocyanic acid derivant；By hydrocyanic acid absorb and the recovery ammonia that dissociates after tail gas adopt water or sodium hydrate aqueous solution or formalin to purify and absorb again, in tail gas, remaining hydrocyanic acid is purified the formalin simultaneously harvesting a small amount of hydrocyanic acid aqueous solution or Cyanogran. crude product aqueous solution or hydroxyl acetonitrile, and the tail gas after purification is burned with tail gas boiler.
The present invention provides a kind of Filter Tuber For Clean Coal tail gas comprehensive utilization to produce the environment-protecting clean method of hydrocyanic acid derivant, and its specific implementation step is as follows：
The first step：Filter Tuber For Clean Coal tail gas after purifying is realized the separation of methane gas, hydrogen, carbon monoxide etc. by separation means such as pressure-variable adsorptions, obtain the relatively low methane gas of quality requirements, hydrogen, carbon monoxide and tail gas.
Filter Tuber For Clean Coal tail gas after purification refers to gas thing after the purification process such as desulphurization and denitration, dehydration for the Filter Tuber For Clean Coal tail gas；Indication Filter Tuber For Clean Coal tail gas includes all raw coal and carries out purifying process and brown coal upgrading acquisition Filter Tuber For Clean Coal or semicoke（Semi-coke）All tail gas Deng generation；Indication raw coal includes bituminous coal, anthracite and the brown coal of various qualities.
Mainly contain the gases such as hydrogen, methane, carbon monoxide, carbon dioxide, nitrogen, oxygen, ethane in Filter Tuber For Clean Coal tail gas after purification, hydrogen, carbon monoxide, methane gas and tail gas are respectively obtained by pressure-swing absorption apparatus and other separation equipment；Hydrogen is used for synthesizing ammonia, carbon monoxide and tail gas for synthesizing methanol and then oxidation obtains formaldehyde, methane gas are directly used in ammoxidation or ammonification dehydrogenation synthesizes hydrocyanic acid and its hydrocyanic acid downstream derivative thing it is achieved that the cleaning of Filter Tuber For Clean Coal tail gas comprehensively utilizes.
The prescription of ammoxidation that what we were required be directly used in or the methane gas of relative enhancement that ammonification dehydrogenation synthesizes hydrocyanic acid derivant and its downstream derivative thing is very loose, can contain a certain amount of hydrogen, carbon monoxide, nitrogen and oxygen and other gas in methane gas；Wherein methane content require be：≥55.0%（Volume）, hydrogen content require be：≤10.0%（Volume）, carbon monoxide content require be：≤10.5%（Volume）.The purity requirement of this methane gas is very low, saves and purifies cost 80% or more, is that the comprehensive utilization that raw material production hydrocyanic acid derivant is Filter Tuber For Clean Coal tail gas opens a conveniently approach using the methane gas that this low-purity requires.
Second step：Filter Tuber For Clean Coal tail gas separates the relatively low methane gas of the quality requirements obtaining relatively purifying by the first step and is directly used in methane ammoxidation or ammonification dehydrogenation synthesis hydrocyanic acid resynthesis multiple hydrocyanic acid derivant；The reaction effect that this methane gas relatively low using quality requirements synthesize hydrocyanic acid with conventional gas ammoxidation or ammonification dehydrogenation does not have difference, as long as the component requirements that methane gas and ammonia, the amount of air or ammonification dehydrogenation synthesize hydrocyanic acid reaction mixture gas just can be ensured ammoxidation or ammonification dehydrogenation synthesize the reaction effect of hydrocyanic acid by the amount of methane gas and ammonia using automatic control allotment well according to the component requirements that ammoxidation synthesizes hydrocyanic acid reaction mixture gas；Hydrocyanic acid synthetic reaction gas and sodium hydrate aqueous solution absorbing reaction obtain high-purity Cyanogran. and synthesize downstream hydrocyanic acid derivant, after hydrocyanic acid synthetic reaction QI prostration ammonia with formaldehyde or other aldehydes synthesis of hydroxy acetonitrile or other hydrocyanic acid derivant and synthesize downstream hydrocyanic acid derivant, after hydrocyanic acid synthetic reaction QI prostration ammonia with water or other solvent absorption and purify and obtain high purity liquid hydrocyanic acid and synthesize downstream hydrocyanic acid derivant.
Methane ammoxidation primary response equation：
Methane ammonification dehydrogenation primary response equation：
The ammonia that this process adopts, can be that step 1 separates the ammonia that the hydrogen obtaining is Material synthesis.
1st, sodium hydrate aqueous solution absorbs the hydrocyanic acid in synthesis gas, produces and obtains liquid sodium cyanide or solid sodium cyanide, for producing Cyanogran. downstream product.
Hydrocyanic acid in methane ammoxidation or ammonification dehydrogenation synthetic reaction gas reacts generation Cyanogran. with the sodium hydroxide in absorbing liquid, reacting in the synthetic reaction gas obtaining is containing free ammonia, this absorption process is the absorption process in the synthetic reaction gas hydrocyanic acid through directly carrying out except ammonia operation, its free ammonia remains in tail gas after absorbing reaction, carry out the recycling of free ammonia in vent gas treatment again, the raw material ammonia obtaining being used directly for ammoxidation or ammonification dehydrogenation synthetic reaction is processed by ammonia separation retracting device, achieve the recycling of free ammonia and the clean manufacturing of Cyanogran..
Above-mentioned absorbing reaction has obtained sodium cyanide solution, obtains liquid sodium cyanide product by cooling down allotment；By concentrating, crystallizing, be centrifuged, be dried to obtain Cyanogran. solid product, crystalline mother solution is directly or purification rear enclosure is used in sodium hydroxide absorbing reaction liquid.
2nd, formalin or other organic aldehydes absorb the hydrocyanic acid in synthesis gas, and reaction obtains hydroxyl acetonitrile aqueous solution or other hydrocyanic acid derivant, for producing multiple hydrocyanic acid derivant downstream product.
Methane gas ammoxidation or ammonification dehydrogenation synthesize in the reaction gas of hydrocyanic acid and contain a certain amount of free ammonia, and we realize the recycling of ammonia except the technical matters of ammonia using combining, and realize clean manufacturing.
The formaldehyde that this process adopts, can be that step 1 separates the carbon monoxide obtaining and tail gas comprehensively utilizes synthesizing methanol and then aoxidizes the formaldehyde obtaining.
3rd, use the hydrocyanic acid in water or other solvent absorption synthesis gas, purified by modes such as parsing or rectification and obtain liquid hydrocyanic acid, liquid hydrocyanic acid is used for synthesizing hydrocyanic acid derivant and downstream product.
Methane gas ammoxidation or ammonification dehydrogenation synthesize in the reaction gas of hydrocyanic acid and contain a certain amount of free ammonia, and we realize the recycling of ammonia except the technical matters of ammonia using combining, and realize clean manufacturing.
3rd step：By hydrocyanic acid absorb and the recovery ammonia that dissociates after tail gas adopt water or sodium hydrate aqueous solution or formalin to purify and absorb again, in tail gas, remaining hydrocyanic acid is purified the formalin simultaneously harvesting a small amount of hydrocyanic acid aqueous solution or Cyanogran. crude product aqueous solution or hydroxyl acetonitrile, and the tail gas after purification is burned with tail gas boiler.
Although the amount of remaining free hydrocyanic acid is very limited in tail gas system, but because hydrocyanic acid belongs to extremely toxic substance, we must carry out purified treatment to tail gas, can also harvest a small amount of hydrocyanic acid aqueous solution or the formalin of Cyanogran. crude product aqueous solution or hydroxyl acetonitrile simultaneously；Direct the covering of formalin of the hydroxyl acetonitrile that directly use in hydrocyanic acid absorption water or in absorbing by liquid caustic soda liquid, the direct set of Cyanogran. crude product aqueous solution of acquisition is used in absorbing by liquid caustic soda liquid by set for the hydrocyanic acid aqueous solution of acquisition, obtains is used in formaldehyde absorbent, and the tail gas after purified treatment send the burning of tail gas burning boiler again.
By as above three steps, the Filter Tuber For Clean Coal synthesis tail gas comprehensive utilization completing present invention offer produces the environment-protecting clean method of hydrocyanic acid derivant.Its step process is：Filter Tuber For Clean Coal tail gas after purifying is carried out separating by pressure-swing absorption apparatus and other separation equipment and obtains methane gas, hydrogen, carbon monoxide and tail gas；Hydrogen is used for the hydrogenation of hydrocyanic acid derivant or obtains liquefied ammonia product by synthetic ammonia installation, carbon monoxide and tail gas obtain methanol feedstock by synthesizing methanol device and then aoxidize and obtain formaldehyde products, and methane gas are directly used in ammoxidation or ammonification dehydrogenation synthesis hydrocyanic acid is subsequently used in the various hydrocyanic acid derivants of synthesis：Methane gas pass through ammoxidation or ammonification dehydrogenation synthesizes hydrocyanic acid synthesis gas, synthesis gas and sodium hydrate aqueous solution absorbing reaction obtain Cyanogran. and are used for synthesizing downstream hydrocyanic acid derivant, synthesis gas is used for synthesizing downstream hydrocyanic acid derivant with formaldehyde or other organic aldehydes synthesis of hydroxy acetonitrile or other hydrocyanic acid derivant after deamination, synthesis gas is after deamination with water or other solvent absorption and parse purification and obtain liquid hydrocyanic acid and be used for synthesizing downstream hydrocyanic acid derivant, the environment-protecting clean of the zero-emission that the comprehensive utilization of resources achieving Filter Tuber For Clean Coal tail gas produces hydrocyanic acid derivant fine chemical product produces.
The technical matters that the present invention provides, have following feature：
1st, the present invention utilizes Filter Tuber For Clean Coal End gas production hydrocyanic acid derivant, is the effective way that Filter Tuber For Clean Coal tail gas provides a comprehensive utilization of resources, is that the comprehensive utilization of Filter Tuber For Clean Coal tail gas opens an industry chain of circular economy with huge vitality；Very good economic benefit and social benefit can be obtained.
2nd, the present invention provides a kind of new raw material approach for natural gas fine chemistry industry.The potential production of Filter Tuber For Clean Coal tail gas is very huge, and therefore, the present invention proposes the extremely abundant raw material guarantee of the offer for natural gas fine chemistry industry；Methane gas in comprehensive utilization Filter Tuber For Clean Coal tail gas produce hydrocyanic acid derivant by ammoxidation or ammonification dehydrogenation and its industrialization value of downstream derivative thing industrial chain has very huge potentiality.
3rd, the present invention providesFilter Tuber For Clean Coal tail gasThe environment-protecting clean method of comprehensive utilization production hydrocyanic acid derivant greatly reduces the purification requirements of methane feed gas, and purification efficiency is greatly improved, and saves purification cost more than 80% compared with existing purification requirements.
4th, the methane gas being obtained using the purification of Filter Tuber For Clean Coal tail gas separation, are the raw materials that preferable ammoxidation or ammonification dehydrogenation synthesize hydrocyanic acid, have more quality-advantage than common natural gas；Filter Tuber For Clean Coal tail gas is after cleaning and desulfurization, again the separation that the methane gas obtaining also furthermore achieved that element sulphur is separated by pressure-variable adsorption, do not need to carry out again sweetening process as common natural gas, so, effectively improve utilization rate of equipment and installations, improve product yield, reducing energy consumption, save production cost, the practicality of the Technology of present invention offer has been be provided.
Brief description
Figure of description be the present invention relates to Filter Tuber For Clean Coal tail gas comprehensive utilization produce hydrocyanic acid derivant environment-protecting clean method schematic flow sheet.
Specific embodiment
Carry out illustrating in greater detail the present invention below by embodiment, but the scope of the present invention should not be limited by the examples（Component ratio refers both to volume basis ratio）.
Embodiment 1：Filter Tuber For Clean Coal tail gas after purification：Hydrogen 50.6%, methane 26.3%, carbon monoxide 5.9%, carbon dioxide 1.8%, oxygen 0.6%, nitrogen 4.4%, water 2.0%, other 8.4%, carry out separating by pressure-variable adsorption and other auxiliary separating devices, respectively obtain hydrogen, carbon monoxide, methane gas and tail gas；Hydrogen is used for synthesizing methanol for hydrogenation, carbon monoxide and the tail gas synthesizing ammonia or derivant and then oxidation obtains formaldehyde, methane gas are used for iS-One method ammoxidation and synthesize hydrocyanic acid.
Filter Tuber For Clean Coal tail gas separation after purification obtains the component of methane gas:
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | CH4 | 93.368 | 6 | CO2 | 0.451 |
| 2 | H2 | 3.869 | 7 | CO | 0.767 |
| 3 | H2O | 0.121 | 8 | Ar | 0.052 |
| 4 | N2 | 1.124 | 9 | Other | 0.122 |
| 5 | O2 | 0.126 | 10 |
Obtain methane gas using the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification by iS-One method ammoxidation synthetic reaction requirement, reactor feed gas are mixed to get by secondary with the ammonia of amount of calculation and air, reactor feed gas obtain synthesis gas by iS-One method ammoxidation synthetic reaction, and synthesis gas composition is as follows：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.118 | 6 | N2 | 54.340 |
| 2 | NH3 | 1.492 | 7 | CO2 | 0.523 |
| 3 | H2O | 25.498 | 8 | CO | 4.682 |
| 4 | CH4 | 0.471 | 9 | H2 | 4.697 |
| 5 | O2 | 0.018 | 10 | Other | 0.161 |
Synthesis gas is just directly obtaining high-purity sodium cyanide solution by sodium hydrate aqueous solution absorbing reaction without except ammonia process, and free ammonia remains in tail gas；Sodium cyanide solution quality table is as follows：
| Outward appearance | Cyanogran.（%） | CO3 2- | NH3 + | Other |
| Water white transparency | 31.12 | 0.021 | 0.009 | Water, trace impurity |
Obtain high purity liquid Cyanogran. product by cooling down allotment；High-purity sodium cyanide solution passes through concentrate, crystallize, being centrifugally separating to obtain high purity solid Cyanogran. product；Solid sodium cyanide product quality is as follows：
| Outward appearance | Cyanogran.（%） | CO3 2- | NH3 + | Other |
| Water white transparency | 99.58 | 0.075 | 0.019 | Water, trace impurity |
Tailgas component such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.2538 | 6 | N2 | 60.7572 |
| 2 | NH3 | 1.6598 | 7 | CO2 | 0.5638 |
| 3 | H2O | 25.5986 | 8 | CO | 5.2628 |
| 4 | CH4 | 0.5219 | 9 | H2 | 5.3437 |
| 5 | O2 | 0.0268 | 10 | Other | 0.0116 |
Tail gas carries out the recovery of ammonia, using phosphoric acid or ammonium dihydrogen phosphate as absorption carrier；Reclaim the tail gas composition such as following table after ammonia：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.2612 | 6 | N2 | 74.7756 |
| 2 | NH3 | 0.0648 | 7 | CO2 | 0.6949 |
| 3 | H2O | 10.3682 | 8 | CO | 6.4627 |
| 4 | CH4 | 0.6348 | 9 | H2 | 6.5652 |
| 5 | O2 | 0.0275 | 10 | Other | 0.1451 |
Ammonium dihydrogen phosphate absorbing ammonia is converted into ammonium hydrogen phosphate solution, by the recovery of parsing and ammonia；The ammonium dihydrogen phosphate parsing circulates the absorption for ammonia, reclaims the recycling that ammonia achieves ammonia for ammoxidation raw material.
Tail gas after recovery ammonia passes through desalted water absorption cleaning again, and in tail gas, remaining hydrocyanic acid is purified and harvests a small amount of hydrocyanic acid aqueous solution simultaneously；Hydrocyanic acid aqueous solution quality is as follows：
| Hydrocyanic acid（%） | CO3 2-（%） | NH3 +（%） | Other |
| 2.81 | 0.77 | 0.56 | Water, trace impurity |
Hydrocyanic acid aqueous solution set is used in sodium hydroxide absorbing liquid；The component of cleaning of off-gas such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.0056 | 6 | N2 | 80.1458 |
| 2 | NH3 | 0.0013 | 7 | CO2 | 0.7482 |
| 3 | H2O | 4.2428 | 8 | CO | 6.9421 |
| 4 | CH4 | 0.6837 | 9 | H2 | 7.0418 |
| 5 | O2 | 0.0289 | 10 | Other | 0.1598 |
Tail gas after purification is burned with tail gas boiler.
Embodiment 2：With embodiment 1, obtain methane gas using the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification and synthesis gas is obtained by iS-One method ammoxidation synthetic reaction；Reacting synthesis gas pass through combine except ammonia obtain without ammonia or containing Trace Ammonia gas is synthesized；Except the synthesis gas formalin absorption after ammonia obtains high purity hydroxyl acetonitrile solution, for synthesizing High Purity Hydrogen cyanuric acid derivatives.
Synthesis gas component such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.142 | 6 | N2 | 54.282 |
| 2 | NH3 | 1.512 | 7 | CO2 | 0.531 |
| 3 | H2O | 25.482 | 8 | CO | 4.693 |
| 4 | CH4 | 0.471 | 9 | H2 | 4.712 |
| 5 | O2 | 0.017 | 10 | Other | 0.158 |
Synthesis gas is by primary except ammonia is realized obtaining primary after the recycling of free ammonia except ammonia synthesis gas, the primary component such as following table except ammonia synthesis gas：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.9872 | 6 | N2 | 60.4485 |
| 2 | NH3 | 0.0661 | 7 | CO2 | 0.5632 |
| 3 | H2O | 18.1852 | 8 | CO | 5.7450 |
| 4 | CH4 | 0.5210 | 9 | H2 | 5.3418 |
| 5 | O2 | 0.0239 | 10 | Other | 0.1181 |
Ammonium dihydrogen phosphate absorbing ammonia is converted into ammonium hydrogen phosphate solution, by the recovery of parsing and ammonia；The ammonium dihydrogen phosphate parsing circulates the absorption for ammonia, reclaims ammonia and is used for ammoxidation raw material；Primary achieves the recycling of ammonia except ammonia.
The primary ammonia synthesis gas that removes passes through sulfuric acid absorption more finely except ammonia, obtains producing ammonium sulfate byproduct；Finely remove the component such as following table of ammonia synthesis gas：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 9.1624 | 6 | N2 | 62.2559 |
| 2 | NH3 | 0.0016 | 7 | CO2 | 0.5842 |
| 3 | H2O | 16.5456 | 8 | CO | 5.3582 |
| 4 | CH4 | 0.5232 | 9 | H2 | 5.4217 |
| 5 | O2 | 0.0241 | 10 | Other | 0.1231 |
Finely except ammonia obtains ammonium sulfate, the purified simultaneously condensing crystallizing that processes of ammonium sulfate obtains ammonium sulfate side-product.
Finely remove the synthesis gas formalin after ammonia and absorb and obtain hydroxyl acetonitrile aqueous solution, hydroxyl acetonitrile aqueous solution is used for the production of downstream product；Tail gas send tail gas incinerator to burn.
The composition obtaining hydroxyl acetonitrile aqueous solution is as follows：
| Hydroxyacetonitrile（%） | Free formaldehyde（%） | Free CN-（%） | Other |
| 45.31 | 0.07 | 0.03 | Water, trace impurity |
Embodiment 3：With embodiment 2, obtain methane gas using the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification and synthesis gas is obtained by iS-One method ammoxidation synthetic reaction；Reacting synthesis gas pass through combine except ammonia obtain without ammonia or containing Trace Ammonia gas is synthesized；Except the synthesis gas deionized water absorption after ammonia obtains hydrocyanic acid aqueous solution, then by being refining to obtain high purity liquid hydrocyanic acid, high purity liquid hydrocyanic acid is used for the synthesis of hydrocyanic acid derivant；Absorbing tail gas send tail gas incinerator to burn.The quality obtaining high purity liquid hydrocyanic acid is as follows：
| Hydrocyanic acid（%） | CO3 2-（%） | NH3 +（%） | Other |
| 99.72 | - | - | Water, trace impurity |
Embodiment 4：Filter Tuber For Clean Coal tail gas after purification：Hydrogen 54.9%, methane 24.8%, carbon monoxide 5.8%, carbon dioxide 1.6%, oxygen 0.6%, nitrogen 6.2%, water 1.6%, other 4.5%, carry out separating by pressure-variable adsorption and other auxiliary separating devices, respectively obtain hydrogen, carbon monoxide, methane gas and tail gas；Hydrogen is used for synthesizing methanol for hydrogenation, carbon monoxide and the tail gas synthesizing ammonia or hydrocyanic acid derivant and then oxidation obtains formaldehyde, methane gas are used for iS-One method ammoxidation and synthesize hydrocyanic acid.
Filter Tuber For Clean Coal tail gas separation after purification obtains the component of methane gas:
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | CH4 | 88.864 | 6 | CO2 | 0.526 |
| 2 | H2 | 4.214 | 7 | CO | 0.869 |
| 3 | H2O | 0.128 | 8 | Ar | 0.051 |
| 4 | N2 | 3.265 | 9 | Other | 1.960 |
| 5 | O2 | 0.123 | 10 |
Obtain methane gas using the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification by iS-One method ammoxidation synthetic reaction requirement, reactor feed gas are mixed to get by secondary with the ammonia of amount of calculation and air, reactor feed gas obtain synthesis gas by iS-One method ammoxidation synthetic reaction, and synthesis gas composition is as follows：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.128 | 6 | N2 | 54.264 |
| 2 | NH3 | 1.578 | 7 | CO2 | 0.471 |
| 3 | H2O | 25.452 | 8 | CO | 4.624 |
| 4 | CH4 | 0.449 | 9 | H2 | 4.864 |
| 5 | O2 | 0.019 | 10 | Other | 0.151 |
Synthesis gas is just directly obtaining high-purity sodium cyanide solution by sodium hydrate aqueous solution absorbing reaction without except ammonia process, and free ammonia remains in tail gas；Obtain sodium cyanide solution quality as follows：
| Outward appearance | Cyanogran.（%） | CO3 2- | NH3 + | Other |
| Water white transparency | 30.31 | 0.021 | 0.012 | Water, trace impurity |
Obtain high purity liquid Cyanogran. product by cooling down allotment；High-purity sodium cyanide solution passes through concentrate, crystallize, being centrifugally separating to obtain high purity solid Cyanogran. product；Obtain solid sodium cyanide product quality as follows：
| Outward appearance | Cyanogran.（%） | CO3 2- | NH3 + | Other |
| Water white transparency | 99.58 | 0.066 | 0.009 | Water, trace impurity |
Tailgas component such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.2242 | 6 | N2 | 60.6556 |
| 2 | NH3 | 1.6838 | 7 | CO2 | 0.5598 |
| 3 | H2O | 25.5106 | 8 | CO | 5.2688 |
| 4 | CH4 | 0.5145 | 9 | H2 | 5.3418 |
| 5 | O2 | 0.0219 | 10 | Other | 0.0219 |
Tail gas carries out the recovery of ammonia, using phosphoric acid or ammonium dihydrogen phosphate as absorption carrier；Reclaim the tail gas composition such as following table after ammonia：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.2662 | 6 | N2 | 74.8104 |
| 2 | NH3 | 0.0669 | 7 | CO2 | 0.6909 |
| 3 | H2O | 10.3438 | 8 | CO | 6.4698 |
| 4 | CH4 | 0.6339 | 9 | H2 | 6.5486 |
| 5 | O2 | 0.0269 | 10 | Other | 0.1426 |
Ammonium dihydrogen phosphate absorbing ammonia is converted into ammonium hydrogen phosphate solution, by the recovery of parsing and ammonia；The ammonium dihydrogen phosphate parsing circulates the absorption for ammonia, reclaims the recycling that ammonia achieves ammonia for ammoxidation raw material.
Tail gas after recovery ammonia passes through desalted water absorption cleaning again, and in tail gas, remaining hydrocyanic acid is purified and harvests a small amount of hydrocyanic acid aqueous solution simultaneously；Hydrocyanic acid aqueous solution composition is as follows：
| Hydrocyanic acid（%） | CO3 2-（%） | NH3 +（%） | Other |
| 2.88 | 0.76 | 0.54 | Water, trace impurity |
Hydrocyanic acid aqueous solution set is used in sodium hydroxide absorbing liquid；The component of cleaning of off-gas such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.0102 | 6 | N2 | 80.1484 |
| 2 | NH3 | 0.0018 | 7 | CO2 | 0.7452 |
| 3 | H2O | 4.2316 | 8 | CO | 6.9512 |
| 4 | CH4 | 0.6828 | 9 | H2 | 7.0412 |
| 5 | O2 | 0.0310 | 10 | Other | 0.1566 |
Tail gas after purification is burned with tail gas boiler.
Embodiment 5：With embodiment 4, obtain methane gas using the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification and synthesis gas is obtained by iS-One method ammoxidation synthetic reaction；Reacting synthesis gas pass through combine except ammonia obtain without ammonia or containing Trace Ammonia gas is synthesized；Except the synthesis gas formalin absorption after ammonia obtains high purity hydroxyl acetonitrile solution, for synthesizing High Purity Hydrogen cyanuric acid derivatives.
Synthesis gas component such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.272 | 6 | N2 | 54.429 |
| 2 | NH3 | 1.519 | 7 | CO2 | 0.482 |
| 3 | H2O | 25.438 | 8 | CO | 4.612 |
| 4 | CH4 | 0.447 | 9 | H2 | 4.643 |
| 5 | O2 | 0.016 | 10 | Other | 0.142 |
Synthesis gas is by primary except ammonia is realized obtaining primary after the recycling of free ammonia except ammonia synthesis gas, the primary component such as following table except ammonia synthesis gas：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.928 | 6 | N2 | 61.488 |
| 2 | NH3 | 0.116 | 7 | CO2 | 0.556 |
| 3 | H2O | 17.624 | 8 | CO | 5.236 |
| 4 | CH4 | 0.558 | 9 | H2 | 5.341 |
| 5 | O2 | 0.028 | 10 | Other | 0.125 |
Ammonium dihydrogen phosphate absorbing ammonia is converted into ammonium hydrogen phosphate solution, by the recovery of parsing and ammonia；The ammonium dihydrogen phosphate parsing circulates the absorption for ammonia, reclaims ammonia and is used for ammoxidation raw material；Primary achieves the recycling of ammonia except ammonia.
The primary ammonia synthesis gas that removes passes through sulfuric acid absorption more finely except ammonia, obtains producing ammonium sulfate byproduct；Finely remove the component such as following table of ammonia synthesis gas：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 9.1558 | 6 | N2 | 62.1310 |
| 2 | NH3 | 0.0011 | 7 | CO2 | 0.5852 |
| 3 | H2O | 16.6632 | 8 | CO | 5.3712 |
| 4 | CH4 | 0.5247 | 9 | H2 | 5.4213 |
| 5 | O2 | 0.0234 | 10 | Other | 0.1231 |
Finely except ammonia obtains ammonium sulfate, the purified simultaneously condensing crystallizing that processes of ammonium sulfate obtains ammonium sulfate side-product.
Finely remove the synthesis gas formalin after ammonia and absorb and obtain hydroxyl acetonitrile aqueous solution, hydroxyl acetonitrile aqueous solution is used for the production of downstream product；Tail gas send tail gas incinerator to burn.
The composition obtaining hydroxyl acetonitrile aqueous solution is as follows：
| Hydroxyacetonitrile（%） | Free formaldehyde（%） | Free CN-（%） | Other |
| 45.34 | 0.07 | 0.02 | Water, trace impurity |
Embodiment 6：With embodiment 5, obtain methane gas using the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification and synthesis gas is obtained by iS-One method ammoxidation synthetic reaction；Reacting synthesis gas pass through combine except ammonia obtain without ammonia or containing Trace Ammonia gas is synthesized；Except the synthesis gas deionized water absorption after ammonia obtains hydrocyanic acid aqueous solution, then by being refining to obtain high purity liquid hydrocyanic acid, high purity liquid hydrocyanic acid is used for the synthesis of hydrocyanic acid derivant；Absorbing tail gas send tail gas incinerator to burn.The quality obtaining high purity liquid hydrocyanic acid is as follows：
| Hydrocyanic acid（%） | CO3 2-（%） | NH3 +（%） | Other |
| 99.79 | - | - | Water, trace impurity |
Embodiment 7：Filter Tuber For Clean Coal tail gas after purification：Hydrogen 48.9%, methane 21.8%, carbon monoxide 5.9%, carbon dioxide 1.5%, oxygen 0.4%, nitrogen 14.3%, water 1.1%, other 6.1%, carry out separating by pressure-variable adsorption and other auxiliary separating devices, respectively obtain hydrogen, carbon monoxide, methane gas and tail gas；Hydrogen is used for synthesizing methanol for hydrogenation, carbon monoxide and the tail gas synthesizing ammonia or hydrocyanic acid derivant and then oxidation obtains formaldehyde, methane gas are used for iS-One method ammoxidation and synthesize hydrocyanic acid.
Filter Tuber For Clean Coal tail gas separation after purification obtains the component of methane gas:
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | CH4 | 82.564 | 6 | CO2 | 0.428 |
| 2 | H2 | 6.156 | 7 | CO | 0.934 |
| 3 | H2O | 0.112 | 8 | Ar | 0.052 |
| 4 | N2 | 9.312 | 9 | Other | 0.318 |
| 5 | O2 | 0.124 | 10 |
Obtain methane gas using the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification by iS-One method ammoxidation synthetic reaction requirement, reactor feed gas are mixed to get by secondary with the ammonia of amount of calculation and air, reactor feed gas obtain synthesis gas by iS-One method ammoxidation synthetic reaction, and synthesis gas composition is as follows：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.096 | 6 | N2 | 54.282 |
| 2 | NH3 | 1.512 | 7 | CO2 | 0.526 |
| 3 | H2O | 25.521 | 8 | CO | 4.721 |
| 4 | CH4 | 0.456 | 9 | H2 | 4.748 |
| 5 | O2 | 0.017 | 10 | Other | 0.121 |
Synthesis gas is just directly obtaining high-purity sodium cyanide solution by sodium hydrate aqueous solution absorbing reaction without except ammonia process, and free ammonia remains in tail gas；Sodium cyanide solution quality is as follows：
| Outward appearance | Cyanogran.（%） | CO3 2- | NH3 + | Other |
| Water white transparency | 31.14 | 0.019 | 0.012 | Water, trace impurity |
Obtain high purity liquid Cyanogran. product by cooling down allotment；High-purity sodium cyanide solution passes through concentrate, crystallize, being centrifugally separating to obtain high purity solid Cyanogran. product；Solid sodium cyanide product quality is as follows：
| Outward appearance | Cyanogran.（%） | CO3 2- | NH3 + | Other |
| Water white transparency | 99.61 | 0.067 | 0.008 | Water, trace impurity |
Tailgas component such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.2248 | 6 | N2 | 60.7562 |
| 2 | NH3 | 1.6816 | 7 | CO2 | 0.5631 |
| 3 | H2O | 25.6113 | 8 | CO | 5.2742 |
| 4 | CH4 | 0.5192 | 9 | H2 | 5.3351 |
| 5 | O2 | 0.0221 | 10 | Other | 0.0124 |
Tail gas carries out the recovery of ammonia, using phosphoric acid or ammonium dihydrogen phosphate as absorption carrier；Reclaim the tail gas composition such as following table after ammonia：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.2662 | 6 | N2 | 74.6943 |
| 2 | NH3 | 0.0668 | 7 | CO2 | 0.6921 |
| 3 | H2O | 10.4514 | 8 | CO | 6.4676 |
| 4 | CH4 | 0.6338 | 9 | H2 | 6.5538 |
| 5 | O2 | 0.0275 | 10 | Other | 0.1465 |
Ammonium dihydrogen phosphate absorbing ammonia is converted into ammonium hydrogen phosphate solution, by the recovery of parsing and ammonia；The ammonium dihydrogen phosphate parsing circulates the absorption for ammonia, reclaims the recycling that ammonia achieves ammonia for ammoxidation raw material.Tail gas after recovery ammonia passes through desalted water absorption cleaning again, and in tail gas, remaining hydrocyanic acid is purified and harvests a small amount of hydrocyanic acid aqueous solution simultaneously；Hydrocyanic acid aqueous solution composition is as follows：
| Hydrocyanic acid（%） | CO3 2-（%） | NH3 +（%） | Other |
| 2.62 | 0.71 | 0.54 | Water, trace impurity |
Hydrocyanic acid aqueous solution set is used in sodium hydroxide absorbing liquid；The component of cleaning of off-gas such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 0.0051 | 6 | N2 | 80.3101 |
| 2 | NH3 | 0.0016 | 7 | CO2 | 0.7473 |
| 3 | H2O | 4.2438 | 8 | CO | 6.9421 |
| 4 | CH4 | 0.6835 | 9 | H2 | 7.0372 |
| 5 | O2 | 0.0293 | 10 | Other | 0.1557 |
Tail gas after purification is burned with tail gas boiler.
Embodiment 8：With embodiment 7, using the methane gas that the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification obtains, synthesis gas is obtained by iS-One method ammoxidation synthetic reaction；Reacting synthesis gas pass through combine except ammonia obtain without ammonia or containing Trace Ammonia gas is synthesized；Except the synthesis gas formalin absorption after ammonia obtains high purity hydroxyl acetonitrile solution, for synthesizing High Purity Hydrogen cyanuric acid derivatives.Synthesis gas component such as following table：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.112 | 6 | N2 | 54.285 |
| 2 | NH3 | 1.511 | 7 | CO2 | 0.503 |
| 3 | H2O | 25.532 | 8 | CO | 4.723 |
| 4 | CH4 | 0.442 | 9 | H2 | 4.762 |
| 5 | O2 | 0.018 | 10 | Other | 0.112 |
Synthesis gas is by primary except ammonia is realized obtaining primary after the recycling of free ammonia except ammonia synthesis gas, the primary component such as following table except ammonia synthesis gas：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 8.9872 | 6 | N2 | 60.8787 |
| 2 | NH3 | 0.0670 | 7 | CO2 | 0.5624 |
| 3 | H2O | 18.2398 | 8 | CO | 5.2721 |
| 4 | CH4 | 0.5168 | 9 | H2 | 5.3418 |
| 5 | O2 | 0.0221 | 10 | Other | 0.1121 |
Ammonium dihydrogen phosphate absorbing ammonia is converted into ammonium hydrogen phosphate solution, by the recovery of parsing and ammonia；The ammonium dihydrogen phosphate parsing circulates the absorption for ammonia, reclaims ammonia and is used for ammoxidation raw material；Primary achieves the recycling of ammonia except ammonia.
The primary ammonia synthesis gas that removes passes through sulfuric acid absorption more finely except ammonia, obtains producing ammonium sulfate byproduct；Finely remove the component such as following table of ammonia synthesis gas：
| Sequence number | Component title | Component ratio % | Sequence number | Component title | Component ratio % |
| 1 | HCN | 9.1543 | 6 | N2 | 62.1563 |
| 2 | NH3 | 0.0014 | 7 | CO2 | 0.5832 |
| 3 | H2O | 16.6548 | 8 | CO | 5.3672 |
| 4 | CH4 | 0.5236 | 9 | H2 | 5.4142 |
| 5 | O2 | 0.0219 | 10 | Other | 0.1231 |
Finely except ammonia obtains ammonium sulfate, the purified simultaneously condensing crystallizing that processes of ammonium sulfate obtains ammonium sulfate side-product.
Finely remove the synthesis gas formalin after ammonia and absorb and obtain hydroxyl acetonitrile aqueous solution, hydroxyl acetonitrile aqueous solution is used for the production of downstream product；Tail gas send tail gas incinerator to burn.The composition obtaining hydroxyl acetonitrile aqueous solution is as follows：
| Hydroxyacetonitrile（%） | Free formaldehyde（%） | Free CN-（%） | Other |
| 45.31 | 0.08 | 0.02 | Water, trace impurity |
Embodiment 9：With embodiment 8, using the methane gas that the Filter Tuber For Clean Coal tail gas separation after above-mentioned purification obtains, synthesis gas is obtained by iS-One method ammoxidation synthetic reaction；Reacting synthesis gas pass through combine except ammonia obtain without ammonia or containing Trace Ammonia gas is synthesized；Except the synthesis gas deionized water absorption after ammonia obtains hydrocyanic acid aqueous solution, then by being refining to obtain high purity liquid hydrocyanic acid, high purity liquid hydrocyanic acid is used for the synthesis of hydrocyanic acid derivant；Absorbing tail gas send tail gas incinerator to burn.The quality obtaining high purity liquid hydrocyanic acid is as follows：
| Hydrocyanic acid（%） | CO3 2-（%） | NH3 +（%） | Other |
| 99.79 | - | - | Water, trace impurity |
Claims (3)
1. a kind of Filter Tuber For Clean Coal tail gas comprehensive utilization produces the environment-protecting clean method of hydrocyanic acid derivant, it is characterized in that providing a kind of environment-friendly clean process method that raw coal carries out the purifying Filter Tuber For Clean Coal tail gas comprehensive utilization production hydrocyanic acid derivant processing and producing, Filter Tuber For Clean Coal tail gas passes through the means such as the purified treatment such as desulphurization and denitration, dehydration and pressure-variable adsorption and separates acquisition methane gas, hydrogen, carbon monoxide and tail gas, separates the methane gas obtaining, hydrogen, carbon monoxide and tail gas and produces hydrocyanic acid derivant through comprehensive utilization；Separate the methane gas obtaining and can possess other impurity component such as hydrogen and carbon monoxide of residual certain ingredients ratio, the relatively low methane gas of this quality requirements substitute conventional gas and are used for the raw material that methane ammoxidation produces hydrocyanic acid derivant, separate the hydrogen obtaining and pass through synthetic ammonia installation and obtain ammonia and be also used for methane ammoxidation producing hydrocyanic acid and its derivant, carbon monoxide and tail gas aoxidize can and obtain formaldehyde be used for absorb hydrocyanic acid prepare hydroxyacetonitrile and its derivant for synthesizing methanol and further；Methane gas relatively low for above-mentioned quality requirements, ammonia and raw air or oxygen-enriched air are synthesized the component requirements proportioning of hydrocyanic acid reaction mixture gas according to ammoxidation, control allotment and on-line checking means to ensure that ammoxidation synthesizes the stability of hydrocyanic acid reaction mixture gas using automatic control, realize ammoxidation synthesis hydrocyanic acid and obtain hydrocyanic acid gas mixture；Hydrocyanic acid gas mixture directly obtain with sodium hydrate aqueous solution absorbing reaction Cyanogran. be used for synthesizing downstream hydrocyanic acid derivant, be used for above-mentioned formaldehyde and other aldehydes synthesis of hydroxy acetonitrile and other hydrocyanic acid derivant after hydrocyanic acid gas mixture deamination synthesizing downstream hydrocyanic acid derivant, hydrocyanic acid gas mixture obtains high purity liquid hydrocyanic acid by purification and is used for synthesizing downstream hydrocyanic acid derivant；By hydrocyanic acid absorb and the recovery ammonia that dissociates after tail gas adopt water or sodium hydrate aqueous solution or formalin to purify and absorb again, in tail gas, remaining hydrocyanic acid is purified the formalin simultaneously harvesting a small amount of hydrocyanic acid aqueous solution or Cyanogran. crude product aqueous solution or hydroxyl acetonitrile, and the tail gas after purification is burned with tail gas boiler.
2. described in claim 1, raw coal is carried out the environment-friendly clean process method of the purifying Filter Tuber For Clean Coal tail gas comprehensive utilization production hydrocyanic acid derivant processing and producing, it is characterized in that：Indication raw coal includes bituminous coal, anthracite and the brown coal of various qualities, and indication is purifying to process the purifying process including all raw coal and brown coal upgrading acquisition Filter Tuber For Clean Coal or semicoke（Semi-coke）Etc. process, indication Filter Tuber For Clean Coal tail gas includes all raw coal and carries out purifying process and brown coal upgrading acquisition Filter Tuber For Clean Coal or semicoke（Semi-coke）All tail gas Deng generation.
3. separate the methane gas obtaining described in claim 1 and can possess other impurity component such as hydrogen and carbon monoxide of residual certain ingredients ratio, the relatively low methane gas of this quality requirements can substitute conventional gas as the raw material producing hydrocyanic acid derivant, it is characterized in that：The prescription of methane gas is very loose, can contain a certain amount of hydrogen, carbon monoxide, nitrogen and oxygen and other gas in methane gas, wherein methane content require be：≥55.0%（Volume）, hydrogen content require be：≤10.0%（Volume）, carbon monoxide content require be：≤10.5%（Volume）.
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