A kind of trapping, utilization metallurgy produce CO2Pipeline and lay method of work
Technical field
The present invention relates to a kind of trapping, utilize metallurgy produce the pipeline of CO2 and lay method of work, the technical field belonging to collecting carbonic anhydride, utilizing and bury.
Background technology
Metallurgical production ten amount of discharged rich and influential family, its production and application coke is as reducing agent, blast furnace ironmaking produces blast furnace gas, the coal gas of converter of pneumatic steelmaking production generation produced, its combustible component is carbon monoxide, metallurgical production process includes sintering, blast furnace, converter, heater for rolling steel, gas fired-boiler, limekiln etc., all using coal gas to make fuel, combustion product contains substantial amounts of carbon dioxide, and discharge capacity is huge.The CO that trapping metallurgical production process produces2Purify, pressurize, be delivered to the users such as oil field, agricultural greenhouse, chemical industry, food by carbon dioxide conduit system, be used for directly utilizing or purifying further utilization, it is delivered to the CCUS system and method for user by pipeline, there is scale pollution control big, collaborative, trapping low cost and other advantages.
Producing in terms of source from carbon dioxide, the industry production capacity surplus such as present steel, chemical industry, product specification are low, enterprise's heavy losses.Trap and process the discharge flue gas causing atmospheric pollution, make its qualified discharge, and extract carbon dioxide, not only can obtain sale carbon dioxide economic benefit, it is also possible to carrying out optimization of inside structure, change backward production facilities are " advanced " production capacity, avoid eliminating, fundamentally solving airborne release to pollute, corporate environment pollution problem is heavily changed in radical cure, it is thus achieved that social benefit.In terms of the use of carbon dioxide, carbon dioxide, as cheap, stable medium, at aspects such as petroleum industry, agricultural, biomass energies, is well worth doing, can improve the level of resources utilization, significantly improve environment.It can be said that the popularization that this technology is in oil field will assist in the popularization on a large scale in China of the CCUS technology.
Pipeline having no for long-distance sand transport carbon dioxide has been reported that now, but be as collecting carbonic anhydride, purify, store, the expansion of the research such as utilization, to the design of carbon dioxide conduit with lay and will become technical problem urgently to be resolved hurrily.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of trapping, utilizes metallurgy to produce CO2Pipeline.
The present invention also provides for the laying method of work of above-mentioned pipeline.
Technical scheme is as follows:
A kind of trapping, utilization metallurgy produce CO2Pipeline, including the CO being sequentially communicated2Trap portion, CO2Extract purification portion, CO2Pressurized storage portion, CO2Allotter and Monitoring Pinpelines device;
Described CO2Extract purification portion and CO2Pressurized storage passes through CO between portion2Conveyance conduit is connected, described CO2Pressurized storage portion and CO2CO is passed through between allotter2Conveyance conduit is connected;
At described CO2On conveyance conduit, distribution has been arranged in series spherical tank, is provided with force (forcing) pump in entering of each described spherical tank, goes out to be disposed with on tank pipeline conduit assembly and gas bleeding device at each described spherical tank on tank pipeline.Trapping of the present invention, utilization metallurgy produce CO2Pipeline produce CO for metallurgical process2Flow process section (such as, trapping smelt iron, heater for rolling steel, gas fired-boiler, limekiln etc.) carry out real-time CO2Trapping, through extracting purification, pressurized storage, conveying, finally through CO2Allotter is respectively used to the technical field of the various consumption carbon dioxide such as displacement of reservoir oil field, oil field, breed of crop production field by terminal use's pipeline.
According to currently preferred, described conduit assembly includes flange, pad, valve, expansion apparatus and steam trap.
According to currently preferred, described gas bleeding device includes exhaust stack and diffuses valve.The advantage herein designed is, ensures CO2Safe transport, when manifold pressure is beyond secure threshold, gas in pipelines is manually or automatically diffused by maintainer.
According to currently preferred, at described CO2Conduit support and apparatus for examination and repair it is additionally provided with on conveyance conduit.Described conduit support, pipeline weight to be supported, also to play balance piping active force, restriction conduit displacement and absorption vibrations, improve the stress distribution of pipeline and the active force to pipe support, it is ensured that tubing safe operation, and extend its service life.
According to currently preferred, described CO2Conveyance conduit is CO2Critical transport condition, manifold pressure scope: 4.8MPa~21MPa, temperature range in pipeline: 31.26-33 DEG C are provided.
According to currently preferred, at described CO2Heater and force (forcing) pump it is additionally provided with on conveyance conduit.The present invention uses CO2Pipe installing heater and the mode of force (forcing) pump respectively it is carried out temperature control and Stress control, it is ensured that CO2Under critical, supercriticality, manifold pressure is stable.
According to currently preferred, described apparatus for examination and repair includes inspection platform, manhole.The advantage herein designed is, conveyance conduit or equipment along road can be overhauled rapidly and safeguard by the maintainer that convenient conveying management station along the line sends.
According to currently preferred, described Monitoring Pinpelines device is responsible for detecting CO2Conveyance conduit gas flow along the line, pressure, temperature, and control platform in real time above-mentioned gas flow, pressure, temperature being uploaded to remotely;Being provided with " safety in production conveying data base " in middle described control platform, correspondence stores CO2Safe transport gas flow threshold value, pressure threshold and the temperature threshold of each transportation section of conveyance conduit:
Gas flow, pressure or the temperature that described Monitoring Pinpelines device detects in real time, when exceeding described safe transport gas flow threshold value, pressure threshold and temperature threshold, middle the most described control platform is to CO2Management station's communication that conveyance conduit is arranged along the line, sends warning maintenance prompting, and corresponding management station sends maintainer or the machinery CO to particular location2Conveyance conduit carries out maintenance investigation.
According to currently preferred, described CO2The capture method that trap portion is used is: carbon dioxide isolation technics, oxygen-enriched combustion technology, post combustion carbon dioxide trapping technique, membrane separation process or burning chemistry chains method before burning.
Before described burning, carbon dioxide isolation technics is for separating CO before burning2Method be by water gas shift reaction, CO gas is converted into CO2And H2, CO after conversion2Enrichment improve 30%-40%, then by physical adsorption systems CO2Separating, remaining major part is preferable hydrogen-enriched fuel gas.
Described oxygen-enriched combustion technology burns with than usual air (oxygen-containing 21%) oxygen-enriched air that oxygen concentration is high exactly.It is an energy-efficient combustion technology, all has application in glass industry, metallurgical industry and Thermal Power Engineering Field.The principle of oxygen-enriched combustion technology is with the same fluid fuel of pure oxygen burning, carbon dioxide recycle flow control burn.The flue gas that oxygen-enriched combusting produces mainly is made up of water and carbon dioxide, uses water separation technology can trap carbon dioxide with comparalive ease in rear end.
Described post combustion carbon dioxide trapping technique is: trap carbon dioxide in the gas discharged after combustion.Post-combustion capture technology has wide applicability.Separate CO2During cost the highest.CO is captured after burning2The engineering challenge that technology faces is: CO in flue gas2Dividing potential drop is relatively low, and flue-gas temperature is of a relatively high.The main technique methods of the carbon dioxide after trapping burning has: chemical absorption method, physisorphtion and modern new method.
1) chemical absorption method is to make unstripped gas and chemical solvent that reversible chemical reaction to occur in absorption tower, and carbon dioxide enters solvent and forms rich solution, and rich solution enters desorption tower heat resolve and goes out carbon dioxide.Main method has amine method, ammonia spirit absorption techniques, carbonate absorption method.
2) physisorphtion.Absorption method is a kind of to utilize solid adsorbent to the CO in unstripped gas2Carry out selectively reversible adsorption effect to separate and recover CO2New technique.Method difference according to desorption operations process can be divided into pressure-variable adsorption and temp.-changing adsorption (including that the most emerging electrolysis is inhaled).Physical absorption selectivity is poor, adsorption capacity is low, adsorbent easily regenerates, and generally uses the pressure swing adsorption method (PSA) that energy consumption is relatively low;Chemisorbed selectivity is preferable, adsorbent reactivation is relatively difficult, and adsorption operations must use the temp.-change adsorptive process (TSA) that energy consumption is higher.
Described membrane separation process refers to rely on the selective dissolution between gas and thin-film material and osmosis, under the promotion of both sides differential pressure of membrane so that a kind of component rapid solution by this thin film, thus mixed gas is separated into residual gas stream and penetrates air-flow two parts.
Described burning chemistry chains method is to use metal-oxide as oxygen carrier, reacts with carbon-containing fuel, and metal-oxide circulates in oxidation reactor and reduction reactor.Chemical chain burning technology (CLOU) is possible not only to realize low energy consumption and separates and trapping CO2, and have that capacity usage ratio is high, suppress or eradicate the advantage such as generation of NOx, for realizing CO2Reduce discharging and provide an advanced developing direction.Chemical chain burning technology, at present still in conceptual phase, cannot be carried out industrial applications in a short time.
A kind of trapping, utilization metallurgy produce CO2The laying method of work of pipeline, including:
1) addressing:
The amount of carbon dioxide, selected carbon dioxide production region is produced according to metallurgy;According to the demand of carbon dioxide, selected carbon dioxide-depleted region;
2) smelter in carbon dioxide production region or metallurgical process produce CO2Flow process section install CO2Trap portion;Described CO2Trap portion successively with CO2Extract purification portion and CO2Pressurized storage portion is connected;
CO is set up between described carbon dioxide production region and described carbon dioxide-depleted region2Conveyance conduit, described CO2Pressurized storage portion and CO2CO is passed through between allotter2Conveyance conduit is connected;Described CO2Allotter is connected with carbon dioxide user terminal;
3) at described CO2On conveyance conduit, distribution has been arranged in series spherical tank, is provided with force (forcing) pump in entering of each described spherical tank, goes out to be disposed with on tank pipeline conduit assembly and gas bleeding device at each described spherical tank on tank pipeline;At described CO2Monitoring Pinpelines device is set on conveyance conduit;
4) described Monitoring Pinpelines device is responsible for detecting CO2Conveyance conduit gas flow along the line, pressure, temperature, and control platform in real time the positional information at above-mentioned Monitoring Pinpelines device place, detected gas flow, pressure, temperature being uploaded to remotely;Being provided with " safety in production conveying data base " in middle described control platform, correspondence stores CO2Safe transport gas flow threshold value, pressure threshold and the temperature threshold of each transportation section of conveyance conduit: gas flow, pressure or the temperature that described Monitoring Pinpelines device detects in real time, when exceeding described safe transport gas flow threshold value, pressure threshold and temperature threshold, the most described remotely in control platform report to the police voluntarily and management station's communication in this Monitoring Pinpelines device region, sending warning maintenance prompting, corresponding management station sends maintainer or the machinery CO to particular location2Conveyance conduit carries out maintenance investigation;
5), after maintenance investigation, platform is controlled in maintenance investigation situation being reported remotely in described management station;
6) step 4 is repeated), until gas flow, pressure or temperature that described Monitoring Pinpelines device detects in real time, time in the range of described safe transport gas flow threshold value, pressure threshold and temperature threshold, middle described control platform releases reports to the police voluntarily.
The advantage of the present invention:
The present invention use first trapping, purify, store, the pattern that remotely carries realizes making full use of metallurgical produced carbon dioxide.Present invention introduces the pipeline configuration of safe transport, it is ensured that carbon dioxide remotely carries can safety and steady.The present invention also introduces intelligence pipe inspection method, it is achieved that the intelligence maintenance of pipeline and maintenance.The present invention is substantially reduced in metallurgical process the CO2 produced and enters in air; it is used for producing carbamide, soda pop, supercritical extraction agent; may be also used in and make protection gas, tobacco industry in welding procedure for expanded, the food industry of tobacco shred for the fresh-keeping of food, vegetable etc. and cold preservation; chemical industry is used for producing the carbon geochemistry product such as dimethyl carbonate, carbon dioxide based polyalcohol; therefore, the production cost of above-mentioned industry is also reduced.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention;
In FIG, 1, spherical tank;2, force (forcing) pump;3, conduit assembly;4, conduit support;5, apparatus for examination and repair;6, gas bleeding device.
Fig. 2 is the flow chart of laying method of work of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited to this.
Embodiment 1,
A kind of trapping, utilization metallurgy produce CO2Pipeline, including the CO being sequentially communicated2Trap portion, CO2Extract purification portion, CO2Pressurized storage portion, CO2Allotter and Monitoring Pinpelines device;
Described CO2Extract purification portion and CO2Pressurized storage passes through CO between portion2Conveyance conduit is connected, described CO2Pressurized storage portion and CO2CO is passed through between allotter2Conveyance conduit is connected;
At described CO2On conveyance conduit, distribution has been arranged in series spherical tank 1, enters to be provided with on tank pipeline force (forcing) pump 2 at each described spherical tank 1, goes out to be disposed with on tank pipeline conduit assembly 3 and gas bleeding device 6 at each described spherical tank 1.
Embodiment 2,
A kind of trapping, utilization metallurgy produce CO2Pipeline, its difference is, described conduit assembly includes flange, pad, valve, expansion apparatus and steam trap.
Described gas bleeding device includes exhaust stack and diffuses valve.
At described CO2Conduit support and apparatus for examination and repair it is additionally provided with on conveyance conduit.
Embodiment 3,
A kind of trapping, utilization metallurgy as described in embodiment 1,2 produce CO2Pipeline, its difference is, described CO2Conveyance conduit is CO2Critical transport condition, manifold pressure scope: 4.8MPa~21MPa, temperature range in pipeline: 31.26-33 DEG C are provided.
At described CO2Heater and force (forcing) pump it is additionally provided with on conveyance conduit.
Embodiment 4,
A kind of trapping, utilization metallurgy as described in embodiment 1-3 produce CO2Pipeline, its difference is, described apparatus for examination and repair includes inspection platform, manhole.
Embodiment 5,
A kind of trapping, utilization metallurgy as described in embodiment 1-4 produce CO2Pipeline, its difference is, described Monitoring Pinpelines device be responsible for detect CO2Conveyance conduit gas flow along the line, pressure, temperature, and control platform in real time above-mentioned gas flow, pressure, temperature being uploaded to remotely;Being provided with " safety in production conveying data base " in middle described control platform, correspondence stores CO2Safe transport gas flow threshold value, pressure threshold and the temperature threshold of each transportation section of conveyance conduit:
Gas flow, pressure or the temperature that described Monitoring Pinpelines device detects in real time, when exceeding described safe transport gas flow threshold value, pressure threshold and temperature threshold, middle the most described control platform is to CO2Management station's communication that conveyance conduit is arranged along the line, sends warning maintenance prompting, and corresponding management station sends maintainer or the machinery CO to particular location2Conveyance conduit carries out maintenance investigation.
Embodiment 6,
A kind of trapping, utilization metallurgy as described in embodiment 1-5 produce CO2Pipeline, its difference is, described CO2The capture method that portion is used is: carbon dioxide isolation technics, oxygen-enriched combustion technology, post combustion carbon dioxide trapping technique, membrane separation process or burning chemistry chains method before burning.
Before described burning, carbon dioxide isolation technics is for separating CO before burning2Method be by water gas shift reaction, CO gas is converted into CO2And H2, CO after conversion2Enrichment improve 30%-40%, then by physical adsorption systems CO2Separating, remaining major part is preferable hydrogen-enriched fuel gas.
Described oxygen-enriched combustion technology burns with than usual air (oxygen-containing 21%) oxygen-enriched air that oxygen concentration is high exactly.It is an energy-efficient combustion technology, all has application in glass industry, metallurgical industry and Thermal Power Engineering Field.The principle of oxygen-enriched combustion technology is with the same fluid fuel of pure oxygen burning, carbon dioxide recycle flow control burn.The flue gas that oxygen-enriched combusting produces mainly is made up of water and carbon dioxide, uses water separation technology can trap carbon dioxide with comparalive ease in rear end.
Described post combustion carbon dioxide trapping technique is: trap carbon dioxide in the gas discharged after combustion.Post-combustion capture technology has wide applicability.Separate CO2During cost the highest.CO is captured after burning2The engineering challenge that technology faces is: CO in flue gas2Dividing potential drop is relatively low, and flue-gas temperature is of a relatively high.The main technique methods of the carbon dioxide after trapping burning has: chemical absorption method, physisorphtion and modern new method.
1) chemical absorption method is to make unstripped gas and chemical solvent that reversible chemical reaction to occur in absorption tower, and carbon dioxide enters solvent and forms rich solution, and rich solution enters desorption tower heat resolve and goes out carbon dioxide.Main method has amine method, ammonia spirit absorption techniques, carbonate absorption method.
2) physisorphtion.Absorption method is a kind of to utilize solid adsorbent to the CO in unstripped gas2Carry out selectively reversible adsorption effect to separate and recover CO2New technique.Method difference according to desorption operations process can be divided into pressure-variable adsorption and temp.-changing adsorption (including that the most emerging electrolysis is inhaled).Physical absorption selectivity is poor, adsorption capacity is low, adsorbent easily regenerates, and generally uses the pressure swing adsorption method (PSA) that energy consumption is relatively low;Chemisorbed selectivity is preferable, adsorbent reactivation is relatively difficult, and adsorption operations must use the temp.-change adsorptive process (TSA) that energy consumption is higher.
Described membrane separation process refers to rely on the selective dissolution between gas and thin-film material and osmosis, under the promotion of both sides differential pressure of membrane so that a kind of component rapid solution by this thin film, thus mixed gas is separated into residual gas stream and penetrates air-flow two parts.
Described burning chemistry chains method is to use metal-oxide as oxygen carrier, reacts with carbon-containing fuel, and metal-oxide circulates in oxidation reactor and reduction reactor.Chemical chain burning technology (CLOU) is possible not only to realize low energy consumption and separates and trapping CO2, and have that capacity usage ratio is high, suppress or eradicate the advantage such as generation of NOx, for realizing CO2Reduce discharging and provide an advanced developing direction.Chemical chain burning technology, at present still in conceptual phase, cannot be carried out industrial applications in a short time.
Embodiment 7,
A kind of trapping, utilization metallurgy as described in embodiment 1-6 produce CO2The laying method of work of pipeline, including:
1) addressing:
The amount of carbon dioxide, selected carbon dioxide production region is produced according to metallurgy;According to the demand of carbon dioxide, selected carbon dioxide-depleted region;
2) smelter in carbon dioxide production region or metallurgical process produce CO2Flow process section install CO2Trap portion;Described CO2Trap portion successively with CO2Extract purification portion and CO2Pressurized storage portion is connected;
CO is set up between described carbon dioxide production region and described carbon dioxide-depleted region2Conveyance conduit, described CO2Pressurized storage portion and CO2CO is passed through between allotter2Conveyance conduit is connected;Described CO2Allotter is connected with carbon dioxide user terminal;
3) at described CO2On conveyance conduit, distribution has been arranged in series spherical tank, is provided with force (forcing) pump in entering of each described spherical tank, goes out to be disposed with on tank pipeline conduit assembly and gas bleeding device at each described spherical tank on tank pipeline;At described CO2Monitoring Pinpelines device is set on conveyance conduit;
4) described Monitoring Pinpelines device is responsible for detecting CO2Conveyance conduit gas flow along the line, pressure, temperature, and control platform in real time the positional information at above-mentioned Monitoring Pinpelines device place, detected gas flow, pressure, temperature being uploaded to remotely;Being provided with " safety in production conveying data base " in middle described control platform, correspondence stores CO2Safe transport gas flow threshold value, pressure threshold and the temperature threshold of each transportation section of conveyance conduit: gas flow, pressure or the temperature that described Monitoring Pinpelines device detects in real time, when exceeding described safe transport gas flow threshold value, pressure threshold and temperature threshold, the most described remotely in control platform report to the police voluntarily and management station's communication in this Monitoring Pinpelines device region, sending warning maintenance prompting, corresponding management station sends maintainer or the machinery CO to particular location2Conveyance conduit carries out maintenance investigation;
5), after maintenance investigation, platform is controlled in maintenance investigation situation being reported remotely in described management station;
6) step 4 is repeated), until gas flow, pressure or temperature that described Monitoring Pinpelines device detects in real time, time in the range of described safe transport gas flow threshold value, pressure threshold and temperature threshold, middle described control platform releases reports to the police voluntarily.