CN104645797A - Device and technology for treating exhaust gas of tank ship and preparing inert gas from exhaust gas - Google Patents
Device and technology for treating exhaust gas of tank ship and preparing inert gas from exhaust gas Download PDFInfo
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- CN104645797A CN104645797A CN201510051553.4A CN201510051553A CN104645797A CN 104645797 A CN104645797 A CN 104645797A CN 201510051553 A CN201510051553 A CN 201510051553A CN 104645797 A CN104645797 A CN 104645797A
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Abstract
The invention relates to a device for treating an exhaust gas of a tank ship and preparing an inert gas from the exhaust gas. The device comprises a pipeline combustor, a catalytic conversion device, a cooler and a CO2 washing tower, which are sequentially connected with one another through a pipeline to form an exhaust gas treatment device, wherein the cooler is also connected with an O2 washing tower, a dryer, a copper net deaerating device and an inert gas storage cabinet to form a device for preparing the inert gas from the exhaust gas. The invention further relates to a technology for treating the exhaust gas of the tank ship and preparing the inert gas from the exhaust gas. Compared with the prior art, the device and the technology have the advantages that the exhaust gas treatment device is combined with the device for preparing the inert gas from the exhaust gas through the pipeline combustor, the catalytic conversion device and the cooler; the discharged gas can be relatively clean by the CO2 washing tower and the O2 washing tower in the exhaust gas treatment device; meanwhile, the exhaust gas of the ship can be effectively treated by the device for preparing the inert gas from the exhaust gas; the components in the exhaust gas reach the requirements of the inert protective gas in an oil tank; and the treatment cost of the exhaust gas is greatly reduced.
Description
Technical field
The invention belongs to oil carrier waste gas pollution control and treatment technical field, particularly relate to device and the technique of a kind of inerting disposal to waste gas in oil carrier and marine exhaust process.
Background technology
At present, the generating means that inert protective gas produced by existing oil carrier has flue gas formula, stand alone type, multi-functional formula etc., and often kind of inert protective gas generating means has the design feature of himself and certain scope of application.Flue gas formula inert protective gas generating means, although its economic performance is fine, but only using boiler waste gas as carrying out material source, and can not the pollutant in waste gas be processed, therefore waste gas does not reach the emission request in International Maritime Organization (IMO) MARPOL73/78 Convention amendment; Stand alone type inert protective gas generating means, this device advantage is the purity that can control inert protective gas, but initial investment is large, and fuel consumption, can not process the pollutant in waste gas; Multi-functional formula inert protective gas generating means, this device is the combination of two kinds of devices above, due to reasons such as initial investment are large, maintenance cost is high, fuel consumption amount is large, rarely found on present boats and ships.
Emission-control equipment common in spot ship is desulfurizer, as wet scrubbing tower technology, improves washing alkali liquid pH value mainly through adopting in single loop, increase circulating pump quantity and adopts the methods such as chemical addition agent to improve desulfuration efficiency.In the alkali lye of single loop wet scrubbing technique, maintaining higher alkali lye pH value needs supplementary a large amount of absorbent, and high ph-values is unfavorable for that end product sulfite ion is oxidized, and is also unfavorable for reducing chemical oxygen consumption (COC) (COD); The increase of circulating pump quantity can increase power consumption and operating cost exponentially; And when adopting chemical addition agent, the Strong oxdiative device in alkali lye pond can make the chemical degradation speed of additive accelerate, thus causes the increase of additive use amount.The Chinese invention patent " magnesium base-seawater method desulfurization system for ship " being ZL201110039565.7 (notification number is CN102120138A) as a patent No. reaches long-term desulfurization target efficiently in conjunction with magnesium processes and seawater method, but in the design of this system pipeline, frequency conversion tubing pump and sea water pump place pipeline all adopt a pump to control the method for designing of two pipelines, and spray pump is arranged on again on the branch road of spray pipeline.Therefore, efficient desulfurization target be reached, need accurate flow-control, increase flow-control difficulty.And the spray mode of single loop multi-stage spray adds the spray flux of slurries and the loss power of circulating pump.If another patent No. is the mode of washing that ZL201110210002.X (notification number is CN102247741A) Chinese invention patent " a kind of flue gas desulfurization technique " have employed multi-stage spray in reverse-flow scrubbing tower, decrease the granule foreign in cleaning solution, improve exhuast gas desulfurization efficiency.
Mainly for the desulfurization treating apparatus in waste gas on it, owing to not only including sulfide SO in waste gas
x, also include NO
x, CO
xetc. harmful components, but specifically also do not popularize at present for marine exhaust Integrated Processing Unit, only have minority boats and ships that portion treating apparatus is housed, if a patent No. is ZL02122225 (notification number is CN1462644A), denomination of invention is " emission-control equipment and exhaust treatment system ", its by the 1st emission-control equipment in the rear end of multicyclone device, by multicyclone device, the fine solid particle in waste gas is removed, the back segment of multicyclone device is being configured in through the 2nd emission-control equipment, by multicyclone device, the fine solid particle in waste gas is removed, after purifying again through the 2nd emission-control equipment, be discharged in air by the 2nd exhaust emission tube of the 2nd emission-control equipment.Its deficiency is still that exhaust-gas treatment amount is little, and exhaust-gas treatment cost is high, and also must arrange dissimilar emission-control equipment to the different noble gas of process, and shipping transport cost is improved greatly.For this reason, need to develop a nested structure simple and device and the process of inerting disposal and marine exhaust post processing can be carried out to all oil carrier cargo tanks simultaneously.
Summary of the invention
A technical problem to be solved by this invention provides for above-mentioned prior art present situation a kind of structure simple and effectively can improve oil carrier exhaust-gas treatment and the lazy device of the waste gas system of utilization.
Another technical problem to be solved by this invention provides a kind of effectively to improve oil carrier exhaust-gas treatment for above-mentioned prior art present situation and utilize waste gas to carry out making lazy technique.
The present invention solves the problems of the technologies described above adopted technical scheme: this oil carrier exhaust-gas treatment and the lazy device of the waste gas system of utilization, include the pipeline burner be connected with exhaust gas entrance, the waste gas of discharging from described pipeline burner is carried out the catalytic convention design of SCR, the cooler that the waste gas of discharging from described catalytic convention design is cooled, pipeline burner, catalytic convention design, cooler is connected in turn by pipeline, it is characterized in that: described cooler outlet connects two shunt, wherein, article one, connect the CO oxysulfide contained in waste gas and oxycarbide removed along separate routes
2scrubbing tower, forms emission-control equipment, another shunt connects O successively
2scrubbing tower, drier, copper mesh deaerating plant and noble gas cabinet, form the lazy device of waste gas system.
Further, described CO
2the outlet of scrubbing tower is connected with two paths, and Article 1 exports with scrubbing tower to be connected and the direct path discharged by acceptable exhaust, and Article 2 is and CO
2that the import of scrubbing tower is connected and again reclaim the path of the defective exhaust-gas treatment of processing, described CO
2the outlet of scrubbing tower is connected with CO
2concentration detector, the path of Article 1 toxic emission is connected with the normally closed and Article 2 of the 4th electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. the 4th single electricity again reclaim process defective exhaust-gas treatment path on be connected with the 7th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 7th single electricity and often open, described CO
2the output signal of telecommunication of concentration detector is connected for detecting the CO analyzed in waste gas in real time with the normally closed control signal often opened with the 7th single electricity of the 4th single electricity
2path, the Article 2 of concentration and the toxic emission of control Article 1 reclaim the open close of the path processing defective exhaust-gas treatment again, the outlet of described copper mesh deaerating plant is connected with two paths, Article 1, be the process path directly acceptable exhaust stored that is connected with the import of described noble gas cabinet, Article 2 is connected with the import of copper mesh deaerating plant and again reclaims the process path processing defective waste gas, the outlet of described copper mesh deaerating plant is connected with oxygen concentration sensor, Article 1, process path is connected with the normally closed and Article 2 of the 3rd electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. the 3rd single electricity again reclaim process defective waste gas process path on be connected with the 5th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 5th single electricity and often open, the output signal of telecommunication of described oxygen concentration sensor is connected for detecting the O analyzed in waste gas in real time with the normally closed control signal often opened with the 5th single electricity of the 3rd single electricity
2the process path of concentration and the storage of control Article 1 waste gas, Article 2 reclaim the break-make of the process path processing defective waste gas again.
Further, exhaust gas turbine is provided with between described catalytic convention design and cooler.Utilize the energy of the level pressure in waste gas and pulse to promote turbine rotation, and utilize the other pressure sensor arranged of exhaust gas turbine, damage or pipeline blockage to prevent turbine further.
Further, described copper mesh deaerating plant is that air inlet is designed to cloth inlet shape, to make waste gas can be full of whole copper mesh deaerating plant rapidly, to increase redox speed and effect.And the specification limit of copper mesh is preferable between 15 orders/inch ~ 25 order/inch, if the hole of copper mesh is excessive, redox effect is undesirable, if the hole of copper mesh is too small, is unfavorable for redox too.
Further, the exhaust gas entrance of described cooler is designed to cloth inlet shape.With the cooling space making waste gas can be full of whole cooler rapidly, to increase speed and the effect of cooling.
Further, described cooler napex is equipped with direct acting type pressure-reducing valve.When pressure increase in scrubbing tower is to limit value, direct acting type pressure-reducing valve is automatically opened and sends audible and visible alarm, and waste gas is entered air, until in scrubbing tower below pressure drop to limit value time, all clear, direct acting type pressure-reducing valve close.
Further, described CO
2scrubbing tower and O
2tower Inner eycle water tank and chemicals dosing plant has been included in scrubbing tower, level sensor and the acid-base value monitoring sensor for monitoring recirculated water acid-base value is provided with in described cyclic water tank, described chemicals dosing plant includes drug tube, described level sensor supplies water to described cyclic water tank by acting on manual-electromagnetic type pump valve connection water pump, described acid-base value monitoring sensor monitoring recirculated water acid-base value automatism are in single-acting electromagnetism normally closed type bi-bit bi-pass reversal valve, described drug tube is offerd medicine, wherein, the dispensing mouth of drug tube is designed to reducing pipe shower nozzle.
Further, the outlet of described drier is connected with two paths, Article 1, be connected with the import of described copper mesh deaerating plant and direct path waste gas qualified for humidity being made further catalyzed conversion, Article 2 is the process path being connected with the import of drier and being processed by underproof for humidity waste gas again drainage, the outlet of described drier is connected with air humidity sensor, Article 1, the path that exhaust fume catalytic transforms is connected with the second electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. second single electricity normally closed, the Article 2 waste gas process path that drainage is processed again is connected with the 4th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 4th single electricity often open, the control signal that the output signal of telecommunication of described air humidity sensor and four single electricity normally closed with second single electricity is often opened is connected and analyzes moisture in waste gas and the path controlling Article 1 exhaust fume catalytic and transform for detecting in real time, the break-make of process path of Article 2 waste gas drainage processing again.
The present invention also provides a kind of oil carrier exhaust-gas treatment and the lazy technique of the waste gas system of utilization, it is characterized in that comprising the steps:
A, marine exhaust are burnt further through pipeline burner, and EGT is raised, and enter described catalytic convention design, and chemical reaction occurs;
B, cool through described cooler, EGT declines, and enters different scrubbing towers respectively in two kinds of situation;
C, when not producing noble gas, enter described CO
2scrubbing tower generation chemical reaction, CO
2scrubbing tower outlet is provided with CO
2concentration sensor, works as CO
2when concentration reaches below setting, enter air, work as CO
2when concentration is more than setting, CO is returned in drainage
2washing tower inlet;
D, when producing noble gas, enter described O
2scrubbing tower generation chemical reaction, drying is carried out again in described drier, detect through described air humidity sensor, some dry defective waste gas then drains into described drier entrance again, and acceptable exhaust enters described copper mesh deaerating plant generation redox reaction to remove oxygen;
E, deoxygenation is further done to the waste gas of steps d, the oxygen concentration sensor arranged through the outlet of described copper mesh deaerating plant analyzes oxygen concentration, if defective noble gas is back in described copper mesh deaerating plant again, and qualified noble gas enters noble gas cabinet lays in.
Compared with prior art, the invention has the advantages that: by pipeline burner, catalytic convention design, cooler, emission-control equipment and the lazy device of waste gas system are combined, and CO in emission-control equipment
2and O
2scrubbing tower can make the gas of discharge cleaner, reduces rear class treatment step, reduces waste gas purification cost, and expection can by the SO in waste gas
x, NO
x, CO
xmore than 80% is reduced etc. harmful components, the lazy device of waste gas system can process marine exhaust effectively simultaneously, the composition in waste gas is made to reach the requirement of cargo tank inert protective gas, there is the utilization rate strengthening marine exhaust energy, make the advantage that exhaust-gas treatment cost significantly reduces, the present invention collects energy-conservation, environmental protection, make lazy, exhaust-gas treatment is in one, can at oil carrier limited resources, under the conditions such as space, improve the safety coefficient of oil carrier, capability of environmental protection and operation of ship economy, reduce the maintenance and management of tankerman to inert protective gas generating means and marine exhaust treatment facility simultaneously, reduce workload and the maintenance cost of crewman.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is CO of the present invention
2scrubbing tower and O
2the structural representation of scrubbing tower inside;
Fig. 3 is CO of the present invention
2scrubbing tower and O
2the structural representation of the dispensing mouth of the inner drug tube of scrubbing tower;
The structural representation of Fig. 4 to be cooler of the present invention be exhaust gas entrance of cloth air port shape.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in figures 1-4, this oil carrier exhaust-gas treatment and the lazy device of the waste gas system of utilization include the pipeline burner 2 be connected with exhaust gas entrance, the catalytic convention design 11 of the waste gas of discharging from pipeline burner 2 being carried out SCR, cooler 63 that the waste gas of discharging from catalytic convention design 11 is cooled, pipeline burner 2, catalytic convention design 11, cooler 63 are connected in turn by pipeline, cooler 63 exports connection two shunt, wherein, one connects the CO oxysulfide contained in waste gas and oxycarbide removed along separate routes
2scrubbing tower 19, forms emission-control equipment, CO
2the outlet of scrubbing tower 19 is provided with Analysis for CO
2the CO of concentration
2concentration detector, if CO
2concentration detector detects CO
2concentration over-standard then returns to CO
2scrubbing tower carries out reprocessing, and acceptable exhaust can directly discharge; Another shunt connects O successively
2scrubbing tower 62, drier 28, copper mesh deaerating plant 34 and noble gas cabinet 38, form the lazy device of waste gas system.
Wherein, CO
2the outlet of scrubbing tower 19 is connected with two paths, and Article 1 exports with scrubbing tower to be connected and the direct path discharged by acceptable exhaust, and Article 2 is and CO
2that the import of scrubbing tower 19 is connected and again reclaim the path of the defective exhaust-gas treatment of processing, CO
2the outlet of scrubbing tower 19 is connected with CO
2concentration detector 66, the path of Article 1 toxic emission is connected with the 4th electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. the 4th single electricity normally closed 64 and Article 2 again reclaim process defective exhaust-gas treatment path on be connected with the 7th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 7th single electricity and often open 65, CO
2the control signal that the output signal of telecommunication and the 4th single electricity normally closed 64 and the 7th single electricity of concentration detector 66 often open 65 is connected for detecting the CO analyzed in waste gas in real time
2path, the Article 2 of concentration and the toxic emission of control Article 1 reclaim the open close of the path processing defective exhaust-gas treatment again.
In order to utilize level pressure in waste gas can and pulse energy, be provided with exhaust gas turbine 9 between catalytic convention design 11 and cooler 63, and utilize the other pressure sensor arranged of exhaust gas turbine 9, to prevent turbine damage or pipeline blockage further.In addition, for the cooling space making waste gas can be full of whole cooler 63 rapidly, the exhaust gas entrance of cooler 63 is designed to cloth air port 14 shape, and cooler 63 napex is equipped with direct acting type pressure-reducing valve 13, when in cooler 63, pressure increase is to limit value, direct acting type pressure-reducing valve 13 is opened and sends audible and visible alarm, waste gas is entered air, until in cooler 63 below pressure drop to limit value time, all clear, direct acting pressure valve 13 cuts out.
In order to the gas of discharge can be made cleaner, reduce rear class treatment step, reduce the purification cost of waste gas, CO
2scrubbing tower 19 and O
2tower Inner eycle water tank and chemicals dosing plant has been included in scrubbing tower 62.Be provided with level sensor and the acid-base value monitoring sensor for monitoring recirculated water acid-base value in cyclic water tank, chemicals dosing plant includes drug tube.Level sensor by acting on manually-electromagnetic type pump valve connects water pump and supplies water to cyclic water tank, acid-base value monitoring sensor monitoring recirculated water acid-base value automatism, in single-acting electromagnetism normally closed type bi-bit bi-pass reversal valve, make drug tube offer medicine.Wherein, the dispensing mouth of drug tube is designed to reducing pipe shower nozzle, and the outlet of drier 28 is connected with two paths, Article 1, be connected with copper mesh deaerating plant 34 import and direct path waste gas qualified for humidity being made further catalyzed conversion, Article 2 is the process path being connected with the import of drier 28 and being processed by underproof for humidity waste gas again drainage, the outlet of drier 28 is connected with air humidity sensor 30, Article 1, the path that exhaust fume catalytic transforms is connected with the second electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. second single electricity normally closed 47, the Article 2 waste gas process path that drainage is processed again is connected with the 4th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 4th single electricity and often opens 46, the control signal that the output signal of telecommunication of air humidity sensor 30 and second single electricity normally closed 47 and the 4th single electricity often opens 46 is connected and analyzes moisture in waste gas and the path controlling Article 1 exhaust fume catalytic and transform for detecting in real time, the break-make of process path of Article 2 waste gas drainage processing again.And the outlet of copper mesh deaerating plant 34 is provided with the oxygen concentration sensor 35 for analyzing oxygen concentration.Wherein, the outlet of copper mesh deaerating plant 34 is connected with two paths, Article 1, be the process path directly acceptable exhaust stored that is connected with the import of noble gas cabinet 38, Article 2 is connected with the import of copper mesh deaerating plant 34 and again reclaims the process path processing defective waste gas, the outlet of copper mesh deaerating plant 34 is connected with oxygen concentration sensor 35, Article 1, process path is connected with the 3rd electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. the 3rd single electricity normally closed 48 and Article 2 again reclaim process defective waste gas process path on be connected with the 5th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 5th single electricity and often open 49, the control signal that the output signal of telecommunication and the 3rd single electricity normally closed 48 and the 5th single electricity of oxygen concentration sensor 35 often open 49 is connected for detecting the O analyzed in waste gas in real time
2the process path of concentration and the storage of control Article 1 waste gas, Article 2 reclaim the break-make of the process path processing defective waste gas again.
The present invention also provides a kind of oil carrier exhaust-gas treatment and the lazy technique of the waste gas system of utilization, comprises the steps:
A, marine exhaust are burnt further through pipeline burner 2, make EGT reach rising, enter catalytic convention design 11, and chemical reaction occurs;
B, cool through subcooler 63, EGT declines, and enters different scrubbing towers respectively in two kinds of situation;
C, when not producing noble gas, enter CO
2there is chemical reaction in scrubbing tower 19, CO
2scrubbing tower outlet is provided with CO
2concentration sensor, works as CO
2when concentration reaches below setting, enter air, work as CO
2when concentration is more than setting, CO is returned in drainage
2washing tower inlet;
D, when producing noble gas, enter described O
2there is chemical reaction in scrubbing tower 62, drying is carried out again in drier 28, detect through air humidity sensor 30, some dry defective waste gas then drains into drier 28 entrance again, and acceptable exhaust enters copper mesh deaerating plant 34 redox reaction occurs to remove oxygen;
E, deoxygenation is further done to the waste gas of steps d, the oxygen concentration sensor 35 arranged through the outlet of copper mesh deaerating plant 34 analyzes oxygen concentration, if defective noble gas is back in copper mesh deaerating plant 34 again, and qualified noble gas enters noble gas cabinet 38 lays in.
When boats and ships start discharging waste gas, waste gas is burnt through pipeline burner 2 further by entrance 1 access to plant, and EGT is raised, and enters catalytic convention design 11, issues biochemical reaction 4NO+4NH at 300 ~ 400 DEG C
3+ O
2=4N
2+ 6H
2o; 6NO
2+ 8NH
3=7N
2+ 12H
2o.Then enter exhaust gas turbine 9, utilize the energy of the pulse in waste gas and level pressure to promote turbine rotation, then cool through subcooler 63, EGT is declined, and act on through the first blower fan 17 and the second blower fan 70, point different situations enter different scrubbing towers respectively:
When not producing noble gas, waste gas enters CO
2scrubbing tower 19, by the effect of the first pumping 27 and High Rotation Speed shower nozzle 50, makes medicine fully contact in filler 20 with waste gas, concurrent biochemical reaction 2NaOH+CO
2=Na
2cO
3+ H
2o; Na
2cO
3+ CO
2+ H
2o=2NaHCO
3; 2NaOH+SO
2=Na
2sO
3+ H
2o; Na
2sO
3+ H
2o+SO
2=2NaHSO
3after, waste gas enters air by first row gas port 23.
When producing noble gas, waste gas enters O
2scrubbing tower 62, by the effect of the second pumping 75 and High Rotation Speed shower nozzle 50, makes medicine fully contact in filler 77 with waste gas, concurrent biochemical reaction 12FeSO
4+ 6H
2o+3O
2=4Fe
2(SO
4)
3+ 4Fe (OH)
3; Fe
2(SO
4)
3+ SO
2+ 2H
2o=2FeSO
4+ 2H
2sO
4; 2SO
2+ O
2+ 2H
2o=2H
2sO
4.Waste gas, through drier 28, removes moisture.And then enter copper mesh deaerating plant 34, under scorching hot copper mesh, redox reaction 2Cu+O occurs
2=2CuO, removes oxygen further.Finally enter noble gas cabinet 38, when cargo tank needs inerting, enter cargo tank by second exhaust port 41.
Consider the various factors in actual management, following improvement is done to native system.
As shown in Figure 1, waste gas enters pipeline burner 2 by exhaust gas entrance 1 and burns, and temperature raises, and filters out a part of particulate, enter catalytic convention design 11 through filter screen 3, and chemical reaction occurs.Temperature sensor 6 real-time Transmission temperature in catalytic convention design 11, when temperature is lower than 300 DEG C or higher than 400 DEG C, send audible and visible alarm, and send the signal of telecommunication, act on single-acting electromagnetism normally closed type bi-bit bi-pass reversal valve 7 (normally closed hereinafter referred to as single electricity) and single-acting electromagnetism bi-bit bi-pass open in usual reversal valve 39 (often opening hereinafter referred to as single electricity).Waste gas is exported drainage from catalytic convention design 11 and returns entrance, until temperature reaches 300 ~ 400 DEG C or manual cancellation, all clear, single-acting electromagnetism normally closed type bi-bit bi-pass reversal valve 7 and single-acting electromagnetism bi-bit bi-pass reversal valve 39 open in usual reset.
And then waste gas enters exhaust gas turbine 9, utilizes the energy of the level pressure in waste gas and pulse to promote turbine rotation.Exhaust gas turbine 9 is other is equipped with the first pressure sensor 8, prevents turbine from damaging or pipeline blockage.When pipeline inner pressure reaches limit value, send audible and visible alarm and first single electricity is often opened 61 simultaneously and open, until pipeline inner pressure drops to below limit value or manual cancellation, all clear, first single electricity often opens 61 resets.When waste gas from exhaust gas turbine 9 out, enter cooler 63, under the effect of cooling water coil 10, EGT reduce.In order to make waste gas be full of whole cooling space fast, cooler exhaust gas entrance spy is designed to cloth air port 14 shape, as shown in Figure 4.Consider that the exhaust gas flow that pipeline likely blocked or entered cooler 63 exceeds the quata, cause pressure in cooler 63 sharply to raise, direct acting type pressure-reducing valve 13 (making safety valve to use) is equipped with at cooler 63 top.When the pressure in cooler 63 reaches the limit value of direct acting type pressure-reducing valve 13, send audible and visible alarm simultaneously direct acting type pressure-reducing valve 13 open, waste gas is entered air, until in cooler 63 below pressure drop to limit value or manual cancellation, all clear, direct acting type pressure-reducing valve 13 resets.
Gas flow sensor 83 moment monitoring exhaust gas flow, and control second single electricity and often open 84.Now, waste gas divides three kinds of situations to enter scrubbing tower.
When exhaust gas flow is within system process range:
(1) the second pressure sensor 37 on noble gas cabinet 38 controls the single electricity of first single electricity the normally closed 44, the 3rd often to be opened 45, first manually-electromagnetic type pump valve 26 and second manually-keying of electromagnetic type pump valve 74.When the pressure of noble gas cabinet 38 is higher than limit value, send the signal of telecommunication, often to be opened by normally closed 44, the 3rd single electricity of first single electricity 45 and second manually-electromagnetic type pump valve 74 cuts out simultaneously, first manually-electromagnetic type pump valve 26 is opened.Water circulating pump 27 is started working, and water chemical solution is pumped to High Rotation Speed shower nozzle 50 (see Fig. 2).Water circulating pump 27 establishes two, a preparation and a use.Waste gas, under the effect of the first blower fan 17, enters CO fast
2scrubbing tower 19, fully contacts with aqueous chemical solution and reacts in filler 20, and scrubbing tower outlet 23 is provided with CO
2concentration detector 66, detects the CO in waste gas in real time
2concentration, and singly electricity normally closed 64 and the 7th single electricity often open 65 to act on the 4th.Work as CO
2when concentration reaches below setting, enter air; Work as CO
2when concentration is more than setting, CO is returned in drainage
2scrubbing tower 19 entrance.Tower top is provided with the first pressure sensor 22 and direct acting type pressure-reducing valve 13.When pressure increase in tower is to limit value, direct acting type pressure-reducing valve 13 is opened and sends audible and visible alarm, and waste gas enters air, until in tower below pressure drop to limit value, all clear, direct acting type pressure-reducing valve 13 resets.
(2) when the pressure of noble gas cabinet 38 is less than limit value or needs to carry out inerting to cargo tank, send the signal of telecommunication, normally closed 44, the 3rd single electricity of first single electricity is often driven 45 and second manually-electromagnetic type pump valve 74 to open, first manually-electromagnetic type pump valve 26 cuts out simultaneously.Water circulating pump 75 is started working, and water chemical solution is pumped to High Rotation Speed shower nozzle 50 (see Fig. 3).Water circulating pump 75 establishes two, a preparation and a use.Waste gas, under the effect of the second blower fan 70, enters O fast
2scrubbing tower 62, fully contacts with aqueous chemical solution and reacts in filler 77.Tower top is provided with the 3rd pressure sensor 79 and the 3rd direct acting type pressure-reducing valve 69.When pressure increase in tower is to limit value, the 3rd direct acting type pressure-reducing valve 69 is opened and sends audible and visible alarm, and waste gas enters air, until in tower below pressure drop to limit value, all clear, the 3rd direct acting type pressure-reducing valve 69 resets.
As depicted in figs. 1 and 2, tower Inner eycle water tank is equipped with level sensor 55, limiting water level level sensor 52 and acid-base value monitoring sensor 25, level sensor 55 by acting on first manually-electromagnetic type pump valve 16 or second manually-electromagnetic type pump valve 71, connect the first make-up pump 18 or the second make-up pump 72 supplies water in case, first make-up pump 18 and the second make-up pump 72 all establish two, the using and the reserved.Acid-base value monitoring sensor 25 monitors the acid-base value of recirculated water, and automatism is in the 4th single electricity normally closed 64, and drug tube 56 is offerd medicine, and the dispensing mouth of drug tube 56 is designed to reducing pipe shower nozzle 51, (as shown in Figure 3).If automatic medicine adding system damages, then act on electromagnetism-manual bi-bit bi-pass reversal valve (often opening hereinafter referred to as electric hand) 59 open in usual, offerd medicine by the first outer dispensing mouth 24 or the second outer dispensing mouth 78, also can by manually offeing medicine.Be provided with bottom cyclic water tank the first electric hand often open 21 and second electric hand often open 73, by limiting water level sensor 52 or Artificial Control, do blowoff valve use.
2, when exhaust gas flow is beyond system process range:
When gas flow sensor 83 monitor exhaust gas flow beyond system process range time, send the signal of telecommunication, second single electricity often opened 84 closedowns.Waste gas is then crossed the 3rd single electricity and is often opened 45, directly enters CO
2scrubbing tower 19.In addition, gas flow sensor 83 does not affect the second pressure sensor 37 often opens 45 control to the single electricity of first single electricity the normally closed 44, the 3rd, and namely when the pressure of noble gas cabinet 38 is higher than limit value, waste gas enters CO as usual
2scrubbing tower 19; When the pressure of noble gas cabinet 38 is less than limit value or needs to carry out inerting to cargo tank, waste gas enters O as usual
2scrubbing tower 62.Drier 28 is responsible for carrying out drying to waste gas, and drier filter screen 80 filters a part of particulate, under the effect of filler 29, absorbs the moisture in waste gas.Drier 28 outlet is provided with gas humidity sensor 30, detects the humidity in outlet exhaust, and controls the keying that second single electricity normally closed 47 and the 4th single electricity often open 46.When gas humidity reaches more than limit value, waste gas again drainage is returned drier 28 entrance; When gas humidity reaches limit value and be following, waste gas enters copper mesh deaerating plant 34.
Under the effect of the scorching hot copper mesh 32 of energising, the oxygen in waste gas is removed further, weakened.Copper mesh deaerating plant 34 top is equiped with the 4th direct acting type pressure-reducing valve 82, when pressure increase in tower is to limit value, send audible and visible alarm simultaneously direct acting type pressure-reducing valve 13 open, waste gas enters air.Device outlet arranges oxygen concentration sensor 35, analyzes oxygen concentration, and controls the keying that the the 3rd single electric normally closed 48 and the 5th single electricity often opens 49.Defective waste gas again leads back and flows to copper mesh deaerating plant 34, and acceptable exhaust now can be referred to as inert protective gas, is called for short noble gas.Noble gas enters in noble gas cabinet 38, the second pressure sensor 37 on noble gas cabinet 38 controls the single electricity of first single electricity the normally closed 44, the 3rd often to be opened 45, first manually-electromagnetic type pump valve 26 and second manually-keying of electromagnetic type pump valve 74.When cargo tank needs inerting, open hand stop valve 40, enter cargo tank by exhaust outlet 41, and by sensors all in computer collection control 43 centralized control system.
Claims (9)
1. an oil carrier exhaust-gas treatment and the lazy device of the waste gas system of utilization, include the pipeline burner (2) be connected with exhaust gas entrance, the waste gas of discharging from described pipeline burner (2) is carried out the catalytic convention design (11) of SCR, the cooler (63) that the waste gas of discharging from described catalytic convention design (11) is cooled, pipeline burner (2), catalytic convention design (11), cooler (63) is connected in turn by pipeline, it is characterized in that: described cooler (63) outlet connection two shunt, wherein, article one, connect the CO oxysulfide contained in waste gas and oxycarbide removed along separate routes
2scrubbing tower (19), forms emission-control equipment, another shunt connects O successively
2scrubbing tower (62), drier (28), copper mesh deaerating plant (34) and noble gas cabinet (38), form the lazy device of waste gas system.
2. oil carrier exhaust-gas treatment according to claim 1 and the lazy device of the waste gas system of utilization, is characterized in that: described CO
2the outlet of scrubbing tower (19) is connected with two paths, and Article 1 exports with scrubbing tower to be connected and the direct path discharged by acceptable exhaust, and Article 2 is and CO
2that the import of scrubbing tower (19) is connected and again reclaim the path of the defective exhaust-gas treatment of processing, described CO
2the outlet of scrubbing tower (19) is connected with CO
2concentration detector (66), the path of Article 1 toxic emission is connected with the 4th electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. the 4th single electricity normally closed (64) and Article 2 again reclaim process defective exhaust-gas treatment path on be connected with the 7th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 7th single electricity and often open (65), described CO
2the output signal of telecommunication of concentration detector (66) is connected for detecting the CO analyzed in waste gas in real time with the control signal that the 7th single electricity often opens (65) with the 4th single electricity normally closed (64)
2path, the Article 2 of concentration and the toxic emission of control Article 1 reclaim the open close of the path processing defective exhaust-gas treatment again, the outlet of described copper mesh deaerating plant (34) is connected with two paths, Article 1, be the process path directly acceptable exhaust stored that is connected with the import of described noble gas cabinet (38), Article 2 is connected with the import of copper mesh deaerating plant (34) and again reclaims the process path processing defective waste gas, the outlet of described copper mesh deaerating plant (34) is connected with oxygen concentration sensor (35), Article 1, process path is connected with the 3rd electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. the 3rd single electricity normally closed (48) and Article 2 again reclaim process defective waste gas process path on be connected with the 5th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 5th single electricity and often open (49), the output signal of telecommunication of described oxygen concentration sensor (35) is connected for detecting the O analyzed in waste gas in real time with the control signal that the 5th single electricity often opens (49) with the 3rd single electricity normally closed (48)
2the process path of concentration and the storage of control Article 1 waste gas, Article 2 reclaim the break-make of the process path processing defective waste gas again.
3. oil carrier exhaust-gas treatment according to claim 1 and the lazy device of the waste gas system of utilization, is characterized in that: be provided with exhaust gas turbine (9) between described catalytic convention design (11) and cooler (63).
4. oil carrier exhaust-gas treatment according to claim 1 and the lazy device of the waste gas system of utilization, is characterized in that: described copper mesh deaerating plant (34) is designed to cloth inlet shape for air inlet.
5. oil carrier exhaust-gas treatment according to claim 1 and the lazy device of the waste gas system of utilization, is characterized in that: the exhaust gas entrance of described cooler (63) is designed to cloth inlet shape.
6. oil carrier exhaust-gas treatment according to claim 5 and the lazy device of the waste gas system of utilization, is characterized in that: described cooler (63) napex is equipped with direct acting type pressure-reducing valve.
7. oil carrier exhaust-gas treatment according to claim 1 and the lazy device of the waste gas system of utilization, is characterized in that: described CO
2scrubbing tower (19) and O
2scrubbing tower has included tower Inner eycle water tank and chemicals dosing plant in (62), level sensor and the acid-base value monitoring sensor for monitoring recirculated water acid-base value is provided with in described cyclic water tank, described chemicals dosing plant includes drug tube, described level sensor supplies water to described cyclic water tank by acting on manual-electromagnetic type pump valve connection water pump, described acid-base value monitoring sensor monitoring recirculated water acid-base value automatism are in single-acting electromagnetism normally closed type bi-bit bi-pass reversal valve, described drug tube is offerd medicine, wherein, the dispensing mouth of drug tube is designed to reducing pipe shower nozzle.
8. oil carrier exhaust-gas treatment according to claim 1 and the lazy device of the waste gas system of utilization, it is characterized in that: the outlet of described drier (28) is connected with two paths, Article 1, be connected with the import of described copper mesh deaerating plant (34) and direct path waste gas qualified for humidity being made further catalyzed conversion, Article 2 is connected with the import of drier (28) and the process path processed by underproof for humidity waste gas again drainage, the outlet of described drier (28) is connected with air humidity sensor (30), Article 1, the path that exhaust fume catalytic transforms is connected with the second electromagnetism normally closed type bi-bit bi-pass reversal valve i.e. second single electricity normally closed (47), the Article 2 waste gas process path that drainage is processed again is connected with the 4th electromagnetism bi-bit bi-pass open in usual reversal valve i.e. the 4th single electricity often open (46), the control signal that the output signal of telecommunication of described air humidity sensor (30) and second single electricity normally closed (47) and the 4th single electricity often opens (46) is connected and analyzes moisture in waste gas and the path controlling Article 1 exhaust fume catalytic and transform for detecting in real time, the break-make of process path of Article 2 waste gas drainage processing again.
9. apply oil carrier exhaust-gas treatment as claimed in claim 8 and the lazy technique of the waste gas system of utilization, it is characterized in that comprising the steps:
A, marine exhaust are burnt further through pipeline burner 2, and EGT is raised, and enter described catalytic convention design (11), and chemical reaction occurs;
B, through described cooler (63) cooling, EGT decline, enter different scrubbing towers respectively in two kinds of situation;
C, when not producing noble gas, enter described CO
2there is chemical reaction in scrubbing tower (19), CO
2scrubbing tower (19) outlet is provided with CO
2concentration sensor, works as CO
2when concentration reaches below setting, enter air, work as CO
2when concentration is more than setting, CO is returned in drainage
2washing tower inlet;
D, when producing noble gas, enter described O
2there is chemical reaction in scrubbing tower (62), drying is carried out again in described drier (28), detect through described air humidity sensor, some dry defective waste gas then drains into described drier (28) entrance again, and acceptable exhaust enters described copper mesh deaerating plant (34) generation redox reaction to remove oxygen;
E, deoxygenation is further done to the waste gas of steps d, the oxygen concentration sensor (35) arranged through the outlet of described copper mesh deaerating plant (34) analyzes oxygen concentration, if defective noble gas is back in described copper mesh deaerating plant (34) again, and qualified noble gas enters noble gas cabinet (38) lays in.
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