CN209714703U - A kind of heavy oil feedstock deep processing pretreatment system - Google Patents

Abstract

A kind of heavy oil feedstock deep processing pretreatment system, including flue gas purification device, device for recovering waste heat of high-temperature flue, low-temperature flue gas waste heat recyclable device, heavy oil feedstock deep processing pretreatment unit, described flue gas purification device one end is connected with catalytic unit, the flue gas purification device other end is connected with device for recovering waste heat of high-temperature flue one end, the device for recovering waste heat of high-temperature flue other end is connected with low-temperature flue gas waste heat recyclable device one end, the heavy oil feedstock deep processing pretreatment unit is connected with the low-temperature flue gas waste heat recyclable device other end, to carry out deep processing pretreatment to heavy oil feedstock using the hot water in low-temperature flue gas waste heat recyclable device.The utility model is provided with heavy oil feedstock deep processing pretreatment unit, water purifier carries out purified treatment to the hot water of recycling, the temperature of purified water, impurity is set just to can satisfy requirement of the electrical desalter to hot water, heavy oil feedstock electro-desalting efficiency is improved, the production cost of the electro-desalting of heavy oil feedstock is greatly decreased.

Description

A kind of heavy oil feedstock deep processing pretreatment system

Technical field

The utility model relates to petrochemical industry heavy oil deep process technology field more particularly to a kind of heavy oil feedstock deep processing are pre- Processing system.

Background technique

The catalysis flue-gas temperature that catalytic unit generates is up to 500 DEG C or more, although the prior art is delivered to flue gas is catalyzed Superheater, evaporator cool down step by step in preheater, superheater, evaporator, pre- so that cooling high-temperature fume becomes low-temperature flue gas Hot device is separately recovered a part of heat in high-temperature flue gas, and low-temperature flue gas is fed directly to chimney, but low-temperature flue gas Temperature is still higher, and low-temperature flue gas is directly emitted into atmosphere by temperature between 130 DEG C -200 DEG C, causes low-temperature flue gas Middle amount of heat is lost, and causes the low-temperature flue gas waste heat wasting of resources, is reduced catalysis flue gas waste heat recovery and is recycled efficiency.

It is catalyzed during flue gas waste heat recovery recycling, although carrying out desulfurization, dedusting demisting, denitration to original high-temperature flue gas Processing makes original high-temperature flue gas purification become high-temperature flue gas, but there are still more CO in high-temperature flue gas, through high-temperature flue gas waste heat After recycling, low-temperature flue gas waste heat recovery processing, high-temperature flue gas is changed into room temperature flue gas, there are still more CO in room temperature flue gas, It is directly discharged in atmosphere, pollutes the environment, be unfavorable for environmental protection, there are security risks.

It is catalyzed during flue gas waste heat recovery recycling, although carrying out desulfurization, dedusting demisting, denitration to original high-temperature flue gas Processing makes original high-temperature flue gas purification become high-temperature flue gas, but there are still a small amount of dioxin, furans in high-temperature flue gas, more PM2.5, dioxin, the furans of ultra-fine grain shape be attracted to PM2.5 particle surface, it is difficult to removed by flue gas purification device, And dioxin, furans have strong carcinogenicity, will increase the carcinogenicity of atmosphere after being emitted into atmosphere, produce to the mankind and biology health Raw security risk, and PM2.5 is emitted into atmosphere can cause haze.

Because containing inorganic salts in heavy oil feedstock, serious corrosion is caused to production equipment, can also cause catalyst poisoning, together When heavy oil feedstock in because containing moisture, make to cause fractionating column to rush tower containing dilutional hyponatremia, increase cooling system load, it is therefore desirable to counterweight Oily raw material carries out dewatering and desalting processing.And electrical desalter needs de- in electricity in advance when carrying out dewatering and desalting processing to heavy oil feedstock Hot water is injected in salt cellar, hot water comes from external boiler, and boiler combustion fossil energy is to be heated as hot water for cold water, and hot water is not By purified treatment, the desalting effect of electrical desalter is influenced, while also increasing the production cost of electro-desalting.

Summary of the invention

In view of this, in view of the above deficiencies, it is necessary to propose a kind of heavy oil feedstock deep processing pretreatment system.

A kind of heavy oil feedstock deep processing pretreatment system, including it is flue gas purification device, device for recovering waste heat of high-temperature flue, low Warm flue gas waste heat recovery apparatus, heavy oil feedstock deep processing pretreatment unit, described flue gas purification device one end and catalytic unit phase Connection, the original high-temperature flue gas in catalytic unit is delivered in flue gas purification device so that original high-temperature flue gas purification at For high-temperature flue gas, the flue gas purification device other end is connected with device for recovering waste heat of high-temperature flue one end, by high temperature cigarette Gas is delivered in device for recovering waste heat of high-temperature flue, and the device for recovering waste heat of high-temperature flue cools down to high-temperature flue gas, with Become low-temperature flue gas after making cooling high-temperature fume, the device for recovering waste heat of high-temperature flue other end and low-temperature flue gas waste heat recycle Device one end is connected, and low-temperature flue gas is delivered in low-temperature flue gas waste heat recyclable device, the low-temperature flue gas waste heat recycling Device cools down to low-temperature flue gas, so as to become room temperature flue gas after low-temperature flue gas cooling, the heavy oil feedstock deep processing is located in advance Reason device is connected with the low-temperature flue gas waste heat recyclable device other end, to utilize the hot water pair in low-temperature flue gas waste heat recyclable device Heavy oil feedstock carry out deep processing pretreatment, the flue gas purification device include water sealed tank, desulfurizing tower, dedusting demister, denitrating tower, Combustion chamber, described water sealed tank one end are connected with catalytic unit, original high-temperature flue gas are delivered in water sealed tank, the water seal The tank other end is connected with desulfurizing tower one end, and the desulfurizing tower carries out desulfurization process to original high-temperature flue gas, and the desulfurizing tower is another One end is connected with dedusting demister one end, and the dedusting demister is dusted demisting processing, institute to original high-temperature flue gas It states the dedusting demister other end to be connected with denitrating tower one end, the denitrating tower carries out denitration process, institute to original high-temperature flue gas It states the denitrating tower other end to be connected with combustion chamber one end, the combustion chamber removes CO, furans in original high-temperature flue gas, the height Warm flue gas waste heat recovery apparatus includes superheater, evaporator, preheater, and described superheater one end is connected with the combustion chamber other end It connects, the superheater carries out first time cooling to high-temperature flue gas, and the superheater other end is connected with evaporator one end, described Evaporator carries out second to high-temperature flue gas and cools down, and described preheater one end is connected with the evaporator other end, the preheater Third time cooling is carried out to high-temperature flue gas, realizes the recycling and reusing of high-temperature flue gas waste heat, the low-temperature flue gas waste heat recycling dress It sets including refrigerant evaporator, adsorption tower, gas-liquid separator, compressor, heat exchanger, the refrigerant evaporator input terminal and preheater The other end is connected, and low-temperature flue gas is delivered in refrigerant evaporator, and the refrigerant evaporator cools down to low-temperature flue gas, First output end of refrigerant evaporator is connected with adsorption tower one end, room temperature flue gas is delivered in adsorption tower, the suction Dioxin, furans, PM2.5 in attached tower removal room temperature flue gas, the adsorption tower other end are connected with external chimney, will go Except the room temperature flue gas emission after dioxin, furans, PM2.5 is into atmosphere, the refrigerant evaporator second output terminal and gas-liquid point It is connected from device one end, the gas-liquid separator will heat up the coolant media after vaporization and carry out gas-liquid separation, the compressor one End is connected with the gas-liquid separator other end, and the compressor compresses gaseous coolant medium, so that gaseous coolant medium As the gaseous coolant medium of high temperature and pressure, described heat exchanger one end is connected with the compressor other end, inside the heat exchanger It accesses external cold water source and is in contact with the pipeline for the gaseous coolant medium for being connected with high temperature and pressure to carry out heat exchange, so that outside Portion's cold water source becomes hot water after absorbing heat, and the heat exchanger other end is connected with hot water tank one end, by hot water It is delivered in hot water tank, realizes the recycling and reusing of low temperature exhaust heat, the heavy oil feedstock deep processing pretreatment unit includes Hot water tank, water purifier, heavy oil feedstock tank, electrical desalter, waste water tank, riser reactor, described water purifier one end and heat The water reservoir other end is connected, so that hot water purification becomes purified water, the water purifier other end and electrical desalter one end phase Connection, purified water is delivered in electrical desalter, the heavy oil feedstock tank is connected with electrical desalter one end, after being demulsified Heavy oil feedstock be delivered in electrical desalter, the heavy oil feedstock after hot water and demulsification in the electrical desalter is sufficiently mixed into mixed Object is closed, is powered to carry out desalting processing to mixture, the riser reactor is connected with the electrical desalter other end, so that de- Salt heavy oil catalytic cracking, the waste water tank are connected with electrical desalter bottom end.

Preferably, it is additionally provided with the first regulating valve on the pipeline that described water sealed tank one end is connected with catalytic unit, it is described The second regulating valve is additionally provided on the pipeline that refrigerant evaporator input terminal is connected with the preheater other end.

Preferably, the first temperature is additionally provided on the pipeline that the refrigerant evaporator input terminal is connected with the preheater other end Sensor is spent, second temperature biography is additionally provided on the pipeline that first output end of refrigerant evaporator is connected with adsorption tower one end Sensor.

Preferably, multiple active focus layer are provided in the adsorption tower.

Preferably, it is additionally provided with water injecting pump on the pipeline that described water purifier one end is connected with the hot water tank other end, Petroleum pump, the riser reactor and electricity are additionally provided on the pipeline that the heavy oil feedstock tank is connected with electrical desalter one end Desalination petroleum pump is additionally provided on the pipeline that the desalter other end is connected.

The utility model is provided with low-temperature flue gas waste heat recyclable device, obtains after device for recovering waste heat of high-temperature flue is handled Low-temperature flue gas be delivered in refrigerant evaporator, the coolant media inside low-temperature flue gas and refrigerant evaporator exchanges heat, low-temperature flue gas Become room temperature flue gas after heat release, the coolant media in refrigerant evaporator vaporizes after absorbing heat, and refrigerant evaporator will be after vaporization Coolant media is delivered in gas-liquid separator, so that the coolant media after vaporization carries out gas-liquid separation, then by gaseous coolant medium It is delivered in compressor, so that gaseous coolant medium becomes the gaseous coolant medium of high temperature and pressure, then by the gaseous state of high temperature and pressure Coolant media is delivered in heat exchanger, so that the external cold water source in the gaseous coolant medium of high temperature and pressure and heat exchanger carries out Heat exchange, external cold water source becomes hot water after absorbing heat, then delivery is used into hot water tank for production line, The recycling and reusing for realizing low temperature exhaust heat, such as by delivery into power steam boiler, so that power steam boiler is directly right Hot water heating greatly reduces the energy consumption of power steam boiler, substantially energy saving.The utility model is provided with low-temperature flue gas Waste-heat recovery device, the waste heat in effective recycling and reusing low-temperature flue gas realize the recycling of catalysis flue gas low-temperature waste heat, greatly The temperature of room temperature flue gas is reduced greatly.

The utility model is provided with flue gas purification device, to original high-temperature flue gas progress desulfurization, dedusting demisting, denitration While reason, moreover it is possible to the high-temperature flue gas after desulfurization, dedusting demisting, denitration process is delivered in combustion chamber, to remove original height CO in warm flue gas makes original high-temperature flue gas purification become high-temperature flue gas, avoids CO in the recycling of high-temperature flue gas waste heat, low-temperature flue gas It is directly discharged in atmosphere after waste heat recovery processing, the discharge of room temperature flue gas is made to meet environmental requirement, reduce security risk.

The utility model is provided with low-temperature flue gas waste heat recyclable device, by setting between refrigerant evaporator and external chimney Adsorption tower is set, to remove dioxin, furans, the PM2.5 in room temperature flue gas, dioxin, furan in room temperature flue gas can be significantly reduced It mutters, the content of PM2.5, reduces the carcinogenic risk of atmosphere, reduce haze caused by PM2.5, make to be emitted into the room temperature cigarette in atmosphere Gas is also more green safe while meeting environmental requirements.

The utility model is provided with heavy oil feedstock deep processing pretreatment unit, and low-temperature flue gas waste heat recyclable device is recycled Delivery is into hot water tank, and water purifier carries out purified treatment to the hot water of recycling, and the temperature for making purified water, impurity are just It can satisfy requirement of the electrical desalter to hot water, be not required to reproduction hot water and used for electrical desalter, made full use of more than low-temperature flue gas The hot water of heat recovery apparatus improves heavy oil feedstock electro-desalting efficiency, the production cost of the electro-desalting of heavy oil feedstock is greatly decreased, subtracts The loss of few equipment, while avoiding catalyst poisoning.

Detailed description of the invention

Fig. 1 is the schematic diagram of heavy oil feedstock deep processing pretreatment system.

In figure: water sealed tank 11, the first regulating valve 111, desulfurizing tower 12, dedusting demister 13, denitrating tower 14, combustion chamber 15, Superheater 21, evaporator 22, preheater 23, the second regulating valve 231, the first temperature sensor 232, refrigerant evaporator 31, second Temperature sensor 311, gas-liquid separator 32, compressor 33, heat exchanger 34, adsorption tower 35, hot water tank 41, water injecting pump 411, Water purifier 42, petroleum pump 431, electrical desalter 44, desalination petroleum pump 441, waste water tank 45, promotes tube reaction at heavy oil feedstock tank 43 Device 46；Catalytic unit 101, chimney 102.

Specific embodiment

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for this For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others Attached drawing.

Referring to Fig. 1, the utility model provides a kind of heavy oil feedstock deep processing pretreatment system, including gas cleaning dress It sets, device for recovering waste heat of high-temperature flue, low-temperature flue gas waste heat recyclable device, heavy oil feedstock deep processing pretreatment unit, the cigarette Air purifying apparatus one end is connected with catalytic unit 101, and it is net that the original high-temperature flue gas in catalytic unit 101 is delivered to flue gas Makeup is set, so that original high-temperature flue gas purification becomes high-temperature flue gas, more than the flue gas purification device other end and high-temperature flue gas Heat recovery apparatus one end is connected, and high-temperature flue gas is delivered in device for recovering waste heat of high-temperature flue, more than the high-temperature flue gas Heat recovery apparatus cools down to high-temperature flue gas, so as to become low-temperature flue gas, the high-temperature flue gas waste heat after cooling high-temperature fume The recyclable device other end is connected with low-temperature flue gas waste heat recyclable device one end, and low-temperature flue gas is delivered to low-temperature flue gas waste heat In recyclable device, the low-temperature flue gas waste heat recyclable device cools down to low-temperature flue gas, so as to become after low-temperature flue gas cooling Room temperature flue gas, the heavy oil feedstock deep processing pretreatment unit is connected with the low-temperature flue gas waste heat recyclable device other end, with benefit Deep processing pretreatment is carried out to heavy oil feedstock with the hot water in low-temperature flue gas waste heat recyclable device；

The flue gas purification device includes water sealed tank 11, desulfurizing tower 12, dedusting demister 13, denitrating tower 14, the water seal 11 one end of tank is connected with catalytic unit 101, and original high-temperature flue gas is delivered in water sealed tank 11, to prevent original high temperature cigarette Gas leaks during transportation, and 11 other end of water sealed tank is connected with 12 one end of desulfurizing tower, by original high temperature cigarette Gas is delivered in desulfurizing tower 12, and the desulfurizing tower 12 carries out desulfurization process to original high-temperature flue gas, to remove original high-temperature flue gas In sulfur dioxide, sulfur trioxide, hydrogen sulfide, mercaptan, 12 other end of desulfurizing tower is connected with 13 one end of dedusting demister, The original high-temperature flue gas after desulfurization process to be delivered in dedusting demister, the dedusting demister is to original high temperature cigarette Gas is dusted demisting processing, to remove dust, the water mist in original high-temperature flue gas, 13 other end of dedusting demister and de- 14 one end of nitre tower is connected, and the original high-temperature flue gas after dedusting demisting is delivered in denitrating tower 14, and the denitrating tower 14 is right Original high-temperature flue gas carries out denitration process, to remove the NOx in original high-temperature flue gas, 14 other end of denitrating tower and combustion chamber 15 one end are connected, and the combustion chamber 15 removes the CO in original high-temperature flue gas, pass through desulfurization, dedusting demisting, denitration, removal CO Original high-temperature flue gas purification is set to become high-temperature flue gas；

Specifically, containing mercaptan in original high-temperature flue gas, because mercaptan easily burns under the conditions of high fever, meeting open fire has explosion Danger, it is therefore desirable to first to original high-temperature flue gas carry out desulfurization, with remove the sulfur dioxide in original high-temperature flue gas, three oxidation Sulphur, hydrogen sulfide reduce the corrosion of original high-temperature flue gas and subsequent high temperature flue gas, low-temperature flue gas to equipment, while removing original height Mercaptan in warm flue gas avoids mercaptan from being delivered in combustion chamber 15 with original high-temperature flue gas, prevents the excessively high Shi Gao of concentrations of mercaptans It explodes under the conditions of heat, open fire, and after removing mercaptan, when CO is delivered to combustion chamber 15 with original high-temperature flue gas, sulphur is not present Alcohol burning security risk, CO in combustion chamber 15 full combustion and become CO₂, can effectively remove in original high-temperature flue gas CO, makes original high-temperature flue gas purification become high-temperature flue gas, and CO is not present in subsequent high-temperature flue gas waste heat recycling, low-temperature flue gas In waste heat removal process, CO is avoided to be directly discharged to pollute atmosphere in atmosphere.

The device for recovering waste heat of high-temperature flue includes superheater 21, evaporator 22, preheater 23, the superheater 21 1 End is connected with 15 other end of combustion chamber, and high-temperature flue gas is delivered in superheater 21, and the superheater 21 is to high-temperature flue gas First time cooling is carried out, to recycle a part of heat in high-temperature flue gas, 21 other end of superheater and 22 one end of evaporator It is connected, the high-temperature flue gas after first time is cooled down is delivered in evaporator 22, and the evaporator 22 carries out high-temperature flue gas Second of cooling, to recycle a part of heat in high-temperature flue gas, described 23 one end of preheater is connected with 22 other end of evaporator It connects, the high-temperature flue gas after second is cooled down is delivered in preheater 23, and the preheater 23 carries out third to high-temperature flue gas Secondary cooling, by cooling down three times, becomes low temperature cigarette after making cooling high-temperature fume to recycle a part of heat in high-temperature flue gas Gas, while superheater 21, evaporator 22, preheater 23 recycle the heat in high-temperature flue gas step by step, realize high-temperature flue gas waste heat Recycling and reusing；

The low-temperature flue gas waste heat recyclable device includes refrigerant evaporator 31, adsorption tower 35, gas-liquid separator 32, compressor 33, heat exchanger 34,31 input terminal of refrigerant evaporator are connected with 23 other end of preheater, low-temperature flue gas are delivered to cold In matchmaker's evaporator 31, the refrigerant evaporator 31 cools down to low-temperature flue gas, becomes room temperature flue gas after low-temperature flue gas heat release, cold Coolant media in matchmaker's evaporator 31 vaporizes after absorbing heat, 31 first output end of refrigerant evaporator and 35 one end of adsorption tower Be connected, room temperature flue gas be delivered in adsorption tower 35, the adsorption tower 35 remove dioxin in room temperature flue gas, furans, PM2.5,35 other end of adsorption tower are connected with external chimney 102, will remove the room temperature cigarette of dioxin, furans, PM2.5 Gas is emitted into atmosphere, and 31 second output terminal of refrigerant evaporator is connected with 32 one end of gas-liquid separator, the gas-liquid point It will heat up the coolant media after vaporization from device 32 and carry out gas-liquid separation, described 33 one end of compressor and 32 other end of gas-liquid separator It is connected, gaseous coolant medium is delivered in compressor 33, the compressor 33 compresses gaseous coolant medium, with Gaseous coolant medium is set to become the gaseous coolant medium of high temperature and pressure, described 34 one end of heat exchanger is connected with 33 other end of compressor It connects, the gaseous coolant medium of high temperature and pressure is delivered in heat exchanger 34, external cold water water is accessed inside the heat exchanger 34 Source is simultaneously in contact with the pipeline for the gaseous coolant medium for being connected with high temperature and pressure to carry out heat exchange, so that external cold water source absorbs Become hot water after heat, the temperature of hot water is 50-70 DEG C, and 34 other end of heat exchanger is connected with 41 one end of hot water tank It connects, delivery is subjected to deep processing pretreatment for heavy oil feedstock into hot water tank 41 and is used, realizes low temperature exhaust heat Recycling and reusing；

Specifically, original high-temperature flue gas becomes high temperature cigarette by desulfurization, dedusting demisting, denitration, removal CO processing after-purification Gas still contains more PM2.5 and a small amount of and dioxin, furans, dioxin, furans are in ultra-fine grain at this time in high-temperature flue gas Shape is attracted to PM2.5 particle surface, it is difficult to it is removed by flue gas purification device, and dioxin, furans have strong carcinogenicity, high temperature Flue gas recycles by high-temperature flue gas waste heat, becomes room temperature flue gas, room temperature flue gas direct emission after low-temperature flue gas waste heat recovery processing Into atmosphere, there are still dioxin, furans, PM2.5 in room temperature flue gas at this time, if directly will be containing dioxin, furans, PM2.5 On the one hand room temperature flue gas emission can discharge the PM2.5 particle for being adsorbed with dioxin, furans into atmosphere, atmosphere into atmosphere In contain dioxin, furans ingredient, increase the carcinogenicity of atmosphere, another aspect PM2.5, which is emitted into atmosphere, can cause haze. By the way that adsorption tower 35 is arranged between refrigerant evaporator 31 and external chimney 102, to remove dioxin, the furan in room temperature flue gas It mutters, PM2.5, the content of dioxin, furans, PM2.5 in room temperature flue gas can be significantly reduced, reduce the carcinogenic risk of atmosphere, make The room temperature flue gas in atmosphere is emitted into while meeting environmental requirements, it is also more green safe；

The heavy oil feedstock deep processing pretreatment unit includes hot water tank 41, water purifier 42, heavy oil feedstock tank 43, electricity Desalter 44, waste water tank 45, riser reactor 46, described 42 one end of water purifier are connected with 41 other end of hot water tank, With by delivery, into water purifier 42, the water purifier 42 removes visible particle object, organic matter, inorganic salts, gold in hot water Belong to ion, chloride ion, so that hot water purification becomes purified water, 42 other end of water purifier is connected with 44 one end of electrical desalter It connects, purified water is delivered in electrical desalter 44, demulsifier, the heavy oil feedstock is added in the heavy oil feedstock tank 43 in advance Tank 43 is connected with 44 one end of electrical desalter, the heavy oil feedstock after demulsification is delivered in electrical desalter 44, the electro-desalting The heavy oil feedstock after hot water and demulsification in tank 44 is sufficiently mixed resulting mixture, is powered to carry out desalting processing to mixture, makes Mixture becomes desalination heavy oil, small water droplet, and gradually long greatly flood drips small water droplets, and the density of water is greater than heavy oil density, greatly Drops of water fall down to electrical desalter 44 bottom and form waste water layer, so that water be made to separate with desalination heavy oil, the promotion tube reaction Device 46 is connected with 44 other end of electrical desalter, by desalination oil transfer into riser reactor 46, so that desalination heavy oil Catalytic cracking, the waste water tank 45 are connected with 44 bottom end of electrical desalter, waste water in waste water layer are delivered in waste water tank 45.

Further, the first regulating valve is additionally provided on the pipeline that described 11 one end of water sealed tank is connected with catalytic unit 101 111, the second regulating valve is additionally provided on the pipeline that 31 input terminal of refrigerant evaporator is connected with 23 other end of preheater 231。

Specifically, the temperature of the first temperature sensor 232 monitoring low-temperature flue gas, by low-temperature flue gas temperature and preset temperature ratio Right: when low-temperature flue gas temperature is not less than preset temperature, the first regulating valve 111 does not adjust；When low-temperature flue gas temperature is less than in advance If when temperature, illustrate that catalytic unit 101 exports original high-temperature flue gas flow velocity is too low or superheater 21, evaporator 22, preheater 23 workloads are excessively high, increased by adjusting the original high-temperature flue gas flow velocity that the first regulating valve 111 exports catalytic unit 101, And then increase inflow total amount when high-temperature flue gas first time cooling, second of cooling, third time cooling, in uncomfortable whole superheater 21, in the case where evaporator 22,23 workload of preheater, more high-temperature flue gas pass through superheater 21, evaporator 22, preheating Become low-temperature flue gas after device 23, low-temperature flue gas temperature is promoted to be increased to preset temperature；Or by reducing superheater 21, evaporator 22,23 workload of preheater reduces superheater 21, evaporator 22, preheater 23 to the heat exchange degree of high-temperature flue gas, uncomfortable In the case where the original high-temperature flue gas flow velocity that whole catalytic unit 101 exports, so that cooling high-temperature fume is become low-temperature flue gas, promote low Warm flue-gas temperature is increased to preset temperature.

Specifically, second temperature sensor 311 monitors the temperature of room temperature flue gas, by room temperature flue-gas temperature and preset temperature ratio Right: when room temperature flue-gas temperature is less than preset temperature, the second regulating valve 231 does not adjust；When room temperature flue-gas temperature is not less than pre- If when temperature, illustrating that low-temperature flue gas flow velocity in refrigerant evaporator 31 is excessively high or 31 workload of refrigerant evaporator is too low, passing through Adjusting the second regulating valve 231 reduces the low-temperature flue gas flow velocity being delivered in refrigerant evaporator 31, reduces low-temperature flue gas and is delivered to Inflow total amount in refrigerant evaporator 31, in the case where not adjusting 31 workload of refrigerant evaporator, less low-temperature flue gas By becoming room temperature flue gas after refrigerant evaporator 31, room temperature flue-gas temperature is promoted to be increased to preset temperature；Or by improving refrigerant 31 workload of evaporator increases refrigerant evaporator 31 to the heat exchange degree of low-temperature flue gas, is not adjusting low-temperature flue gas flow velocity In the case of, promote room temperature flue-gas temperature to be increased to preset temperature.

Further, 31 input terminal of refrigerant evaporator is connected on pipeline with 23 other end of preheater is additionally provided with first Temperature sensor 232, to monitor the temperature of low-temperature flue gas, 31 first output end of refrigerant evaporator and 35 one end phase of adsorption tower Second temperature sensor 311 is additionally provided on the pipeline of connection, to monitor the temperature of room temperature flue gas.

Specifically, the room temperature flue-gas temperature is at 30-60 DEG C.

Further, multiple active focus layer are provided in the adsorption tower 35.

Specifically, the activity focus layer is prepared by activated coke, there is good adsorptivity, can effectively intercept, catch Dioxin, furans and the PM2.5 of ultra-fine grain shape in collection, absorption room temperature flue gas, after the activity focus layer adsorption saturation, using Desorption and regeneration, shaking-sieving are with dioxin, furans and the PM2.5 in removal activity focus layer, so that active focus layer can be repeated Repeatedly utilize.

Specifically, the activity focus layer is in addition to it can adsorb dioxin, furans and PM2.5, moreover it is possible to effectively absorption heavy metal And multiple harmful substances, moreover it is possible to further remaining sulfur dioxide, NO in absorption room temperature flue gas_x, make to be emitted into normal in atmosphere Warm flue gas is more environmentally-friendly.

Further, water filling is additionally provided on the pipeline that described 42 one end of water purifier is connected with 41 other end of hot water tank Pump 411, to control the flow rate of hot water that hot water tank 41 is exported to water purifier 42, water purifier 42 is formed after purifying to hot water and is purified Water, purified water are delivered to again in electrical desalter 44, to meet the purification water demand requirement of electrical desalter 44, the heavy oil feedstock It is additionally provided with petroleum pump 431 on the pipeline that tank 43 is connected with 44 one end of electrical desalter, it is de- to electricity to control heavy oil feedstock tank 43 The heavy oil feedstock flow velocity that salt cellar 44 exports, to meet the heavy oil feedstock demand requirement of electrical desalter 44, the promotion tube reaction Be additionally provided with desalination petroleum pump 441 on the pipeline that device 46 is connected with 44 other end of electrical desalter, with control electrical desalter 44 to The desalination heavy oil flow velocity that riser reactor 46 exports, to meet the desalination heavy oil demand requirement of riser reactor 46.

Specifically, the hot water temperature of electrical desalter 44 requires to be 50-70 DEG C in the prior art, external boiler pair is generally required Cold water heating becomes hot water after so that cold water is absorbed heat, then by delivery into electrical desalter 44, this heating process needs to consume big The fossil energy of amount, and hot water is without purified treatment, wherein the inorganic salts contained, metal ion will seriously affect heavy oil feedstock Electro-desalting effect, and the delivery that this programme recycles low-temperature flue gas waste heat recyclable device is into hot water tank 41, only Hydrophone 42 carries out purified treatment to the hot water of recycling again, makes that the temperature of purified water, that impurity just can satisfy electrical desalter 44 is right The requirement of hot water is not required to reproduction hot water and uses for electrical desalter 44, makes full use of the hot water of low-temperature flue gas waste heat recyclable device, The pretreated production cost of heavy oil feedstock is greatly decreased.

Specific implementation step:

1) the original high-temperature flue gas in catalytic unit 101 is delivered in water sealed tank 11, then step by step by original high-temperature flue gas It is delivered to desulfurizing tower 12, dedusting demister 13, denitrating tower 14, combustion chamber 15, to carry out desulfurization to original high-temperature flue gas, dedusting removes Mist, denitration, removal CO, so as to become high-temperature flue gas after original high-temperature flue gas purification；

2) high-temperature flue gas is delivered to superheater 21, evaporator 22, in preheater 23, step by step to carry out three to high-temperature flue gas Secondary cooling, so as to become low-temperature flue gas after cooling high-temperature fume, while superheater 21, evaporator 22, preheater 23 are separately recovered A part of heat in high-temperature flue gas realizes the recycling and reusing of high-temperature flue gas waste heat；

3) low-temperature flue gas is delivered in refrigerant evaporator 31, the coolant media inside low-temperature flue gas and refrigerant evaporator 31 Heat exchange becomes room temperature flue gas after low-temperature flue gas heat release, room temperature flue gas is delivered in adsorption tower 35 by refrigerant evaporator 31, passes through suction Attached tower 35 removes dioxin, furans, PM2.5 in room temperature flue gas, and adsorption tower 35 is connected with external chimney 102, will remove two The room temperature flue gas emission of English, furans, PM2.5 are disliked into atmosphere, the coolant media in refrigerant evaporator 31 vaporizes after absorbing heat, Coolant media after vaporization is delivered in gas-liquid separator 32 by refrigerant evaporator 31, so that the coolant media after vaporization carries out gas Liquid separation, then gaseous coolant medium is delivered in compressor 33, so that gaseous coolant media collapse becomes the gas of high temperature and pressure State coolant media, then the gaseous coolant medium of high temperature and pressure is delivered in heat exchanger 34, so that the gaseous coolant of high temperature and pressure External cold water source in medium and heat exchanger 34 carries out heat exchange, so that external cold water source becomes hot water after absorbing heat, By delivery, into hot water tank 41, heavy oil feedstock carries out deep processing pretreatment use again, realizes the recycling of low temperature exhaust heat again It utilizes.

4) by delivery into water purifier 42, purified treatment is carried out to hot water, the temperature of purified water, impurity is made just Enough meet requirement of the electrical desalter 44 to hot water, the heavy oil feedstock after demulsification is delivered in electrical desalter 44, hot water and demulsification Heavy oil feedstock afterwards is sufficiently mixed resulting mixture, and electrical desalter 44 carries out desalting processing to mixture, makes water and desalination heavy oil point From by desalination oil transfer into riser reactor 46, so that desalination heavy oil catalytic cracking, the waste water in waste water layer is conveyed Into waste water tank 45.

Module or unit in the utility model embodiment device can be merged according to actual needs, divide and be deleted Subtract.

Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly Interest field, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to this reality The equivalent variations made by novel claim, still falls within the scope of the utility model.

Claims (5)

1. a kind of heavy oil feedstock deep processing pretreatment system, it is characterised in that: returned including flue gas purification device, high-temperature flue gas waste heat Receiving apparatus, low-temperature flue gas waste heat recyclable device, heavy oil feedstock deep processing pretreatment unit, described flue gas purification device one end with urge Makeup, which is set, to be connected, and the original high-temperature flue gas in catalytic unit is delivered in flue gas purification device, so that original high temperature cigarette Gas purification becomes high-temperature flue gas, and the flue gas purification device other end is connected with device for recovering waste heat of high-temperature flue one end, with High-temperature flue gas is delivered in device for recovering waste heat of high-temperature flue, the device for recovering waste heat of high-temperature flue carries out high-temperature flue gas Cooling, so as to become low-temperature flue gas, the device for recovering waste heat of high-temperature flue other end and low-temperature flue gas after cooling high-temperature fume Waste-heat recovery device one end is connected, and low-temperature flue gas is delivered in low-temperature flue gas waste heat recyclable device, the low-temperature flue gas Waste-heat recovery device cools down to low-temperature flue gas, so as to become room temperature flue gas after low-temperature flue gas cooling, the heavy oil feedstock is deep Processing pretreatment unit is connected with the low-temperature flue gas waste heat recyclable device other end, using in low-temperature flue gas waste heat recyclable device Hot water to heavy oil feedstock carry out deep processing pretreatment, the flue gas purification device includes water sealed tank, desulfurizing tower, dedusting demisting Device, denitrating tower, combustion chamber, described water sealed tank one end are connected with catalytic unit, and original high-temperature flue gas is delivered to water sealed tank In, the water sealed tank other end is connected with desulfurizing tower one end, and the desulfurizing tower carries out desulfurization process, institute to original high-temperature flue gas It states the desulfurizing tower other end to be connected with dedusting demister one end, the dedusting demister, which is dusted original high-temperature flue gas, to be removed Mist processing, the dedusting demister other end are connected with denitrating tower one end, and the denitrating tower takes off original high-temperature flue gas Nitre processing, the denitrating tower other end are connected with combustion chamber one end, and the combustion chamber removes CO, furan in original high-temperature flue gas It mutters, the device for recovering waste heat of high-temperature flue includes superheater, evaporator, preheater, and described superheater one end and combustion chamber are another One end is connected, and the superheater carries out first time cooling, the superheater other end and evaporator one end phase to high-temperature flue gas Connection, the evaporator carry out second to high-temperature flue gas and cool down, and described preheater one end is connected with the evaporator other end, institute It states preheater and third time cooling is carried out to high-temperature flue gas, the recycling and reusing of high-temperature flue gas waste heat is realized, more than the low-temperature flue gas Heat recovery apparatus includes refrigerant evaporator, adsorption tower, gas-liquid separator, compressor, heat exchanger, the refrigerant evaporator input terminal It is connected with the preheater other end, low-temperature flue gas is delivered in refrigerant evaporator, the refrigerant evaporator is to low-temperature flue gas Cool down, first output end of refrigerant evaporator is connected with adsorption tower one end, and room temperature flue gas is delivered to adsorption tower In, dioxin, furans, PM2.5 in the adsorption tower removal room temperature flue gas, the adsorption tower other end are connected with external chimney It connects, the room temperature flue gas emission after removing dioxin, furans, PM2.5 is into atmosphere, the refrigerant evaporator second output terminal It is connected with gas-liquid separator one end, the gas-liquid separator will heat up the coolant media after vaporization and carry out gas-liquid separation, described Compressor one end is connected with the gas-liquid separator other end, and the compressor compresses gaseous coolant medium, so that gaseous state Coolant media becomes the gaseous coolant medium of high temperature and pressure, and described heat exchanger one end is connected with the compressor other end, described to change External cold water source is accessed inside hot device and is in contact with the pipeline for the gaseous coolant medium for being connected with high temperature and pressure to carry out hot friendship It changes, so that external cold water source becomes hot water after absorbing heat, the heat exchanger other end is connected with hot water tank one end, Delivery into hot water tank, to be realized to the recycling and reusing of low temperature exhaust heat, the heavy oil feedstock deep processing pretreatment Device includes hot water tank, water purifier, heavy oil feedstock tank, electrical desalter, waste water tank, riser reactor, the water purifier One end is connected with the hot water tank other end, so that hot water purification becomes purified water, the water purifier other end and electro-desalting Tank one end is connected, and purified water is delivered in electrical desalter, and the heavy oil feedstock tank is connected with electrical desalter one end, with Heavy oil feedstock after demulsification is delivered in electrical desalter, the heavy oil feedstock after hot water and demulsification in the electrical desalter is abundant Resulting mixture is mixed, is powered to carry out desalting processing to mixture, the riser reactor is connected with the electrical desalter other end It connects, so that desalination heavy oil catalytic cracking, the waste water tank is connected with electrical desalter bottom end.

2. heavy oil feedstock deep processing pretreatment system as described in claim 1, it is characterised in that: described water sealed tank one end with urge Makeup, which is set, is additionally provided with the first regulating valve on the pipeline being connected, the refrigerant evaporator input terminal is connected with the preheater other end The second regulating valve is additionally provided on the pipeline connect.

3. heavy oil feedstock deep processing pretreatment system as described in claim 1, it is characterised in that: the refrigerant evaporator input It holds and is additionally provided with the first temperature sensor, first output end of refrigerant evaporator on the pipeline being connected with the preheater other end Second temperature sensor is additionally provided on the pipeline being connected with adsorption tower one end.

4. heavy oil feedstock deep processing pretreatment system as described in claim 1, it is characterised in that: be provided in the adsorption tower Multiple activity focus layer.

5. heavy oil feedstock deep processing pretreatment system as described in claim 1, it is characterised in that: described water purifier one end and heat Water injecting pump is additionally provided on the pipeline that the water reservoir other end is connected, the heavy oil feedstock tank is connected with electrical desalter one end Pipeline on be additionally provided with petroleum pump, be additionally provided on the pipeline that the riser reactor is connected with the electrical desalter other end Desalination petroleum pump.