35results about How to "Improve the ratio of agent to oil" patented technology

The invention provides a method of heavy raw material catalytic conversion and the device, comprising: the heavy hydrocarbon raw material passing through the first and second reaction area of the raiser reactor and contacting with catalyst for first reaction and second reaction, the reactants entering into the settler for the separation of catalyst and oil gas, steam stripping the separated catalyst through stripping section and introducing it to the reactivator for carbon burning reactivation, the reactivated catalyst returning to the raiser reactor after cooled or directly to the raiser reactor for reuse. After the heavy oil passing through the device said above, the volume content of olefin decreases by 10~40%, octane value increases 0.5~1 units, sulfur content in petrol decreases 10~30% by weight. After the poor petrol passing through the device said above, the volume content of olefin decreases by 10~60%, octane value increases 0.5~40 units, sulfur content in petrol decreases 10~50% by weight.

The invention discloses a catalytic conversion method to increase production propylene, which comprises the following steps: proceeding in reactor with dilution zone, lightweight hydrocarbon reaction zone and heavyweight hydrocarbon reaction zone; entering regenerated catalyst and carbon catalyst from stripping section into the dilution zone; mixing; flowing upward under the function of pre-lifting agent; entering into the lightweight hydrocarbon reaction zone; touching with the lightweight hydrocarbon at the lower of the lightweight hydrocarbon reaction zone; reacting; moving upward; touching with heavyweight petroleum hydrocarbon at the upper of the lightweight hydrocarbon reaction zone; reacting; moving upward; forming oil solution mixture; entering into heavyweight hydrocarbon reaction zone; touching continually; reacting; getting the carbon catalyst; entering into the stripping section to strip; getting the carbon agent; backing moiety to mixed zone; using cycle; entering the other moiety into mixed zone; using cycle; leading the reaction oil gas to separation system of subsequent product. This method can get very high productivity of propone low carbon alkene.

The invention relates to a pre-treatment process method of high acid crude oil. The method comprises the following steps that high acid crude oil is treated by coupling deacidification and electro-desalting processes by combining chemical extraction and electro-desalting; a first level tank is taken as a deacidification and electro-desalting tank; a demulsifier and an extractant are injected before a crude oil electro-desalting static mixer; after being fully mixing with crude oil, the mixture enters into the first level desalting tank; generated naphthenate and salt-containing sewage in the crude oil are dissolved in the extractant; treated deacidified oil enters into second and third level desalting tanks after being mixed with the demulsifier and water through the static mixer for desalination and dehydration; treated crude oil enters into a subsequent heat exchange unit; after a period time of operation of an electro-desalting system, impurities such as mud in raw material oil are flushed by a non-stop back purge device to discharge mud-containing sewage out of the tank; an extract phase is acidified to separate out naphthenic acid which is further extracted and purified by light dydrocarbon, and the extractant is purified and recovered and recycled.

The invention relates to a hydrocarbon catalytic conversion method for preparing gasoline with low alkene, wherein, in a reactor comprising a mixing area, a first reaction area and a second reaction area, regenerated catalyst and steam stripped charcoal catalyst enter into the mixing area and are mixed together, and flow upward and enter into the first reaction area under the action of a pre-lifted medium; the mixture contacts and reacts with catalyzing materials at the lower part of the first reaction area and flows upward; the generated oil agent mixture enters into the second reaction area and continue to contact and react fully; the oil agent mixture coming out from the second reaction area enters in a settler through a outlet area of the reactor to perform gas-solid separation, the charcoal catalyst after reaction enters into a stripper section of the settler for steam stripping; at lest one part of the steam stripped charcoal catalyst returns to the mixing area for cycling use, and the remained steam stripped charcoal catalyst is regenerated in a regenerator and then enters into the mixing area for cycling use; the reaction oil-gas after separating the charcoal catalyst is sent to a follow-up product separating system. Under the condition of low dry gas yield, the catalytic gasoline with low alkene can be produced by the method.

The invention discloses a method and a device for gasoline upgrading, mainly solving the problems of high yield of dry gas and coke and low liquid recovery during the gasoline upgrading reaction in the double-riser catalytic cracking device, high energy consumption of the device and low desulphurization efficiency. The method is mainly characterized by the steps as follows: some of the regenerated catalysts returning to the heavy oil riser reactor; some of the regenerated catalysts mixing with the recycled catalysts from the rapid bed reactor in the catalysts mixer before contacting with the gasoline of poor quality and entering part I of the gasoline riser reactor, the rapid bed reactor, and the part II of the gasoline riser reactor; reactants flowing into a second settler for separation; upgrading reaction oil and gas entering the fractionation system for fractionating; spent catalysts entering the regenerators for coke burning regenerating. The invention can reduce dry gas and coke yield and improve the total liquid yield and meanwhile decrease the energy consumption of the whole device.

The invention discloses a device and method for producing clean gasoline and increasing propylene yield through catalytic cracking and hydrogenation. The device comprises a reaction-regeneration system, a fractionating system, an absorption stable system and a hydrofining unit. The method comprises the following steps: adding a gasoline fractionating tower to the top of a catalytic cracking fractionating tower to divide crude gasoline into a light fraction and a heavy fraction, wherein the heavy gasoline enters the hydrogenation unit for refining, and one part of the light gasoline enters the absorption stable system to obtain stable light gasoline, and the other part of the light gasoline directly returns to the upper part of a catalytic cracking riser reactor to be cracked to increase the propylene yield under a relatively harsh reaction condition; and finally, blending the stable light gasoline and the modified heavy gasoline to obtain the product of clean gasoline. By adopting the method, the catalytic cracking gasoline is efficiently modified, the propylene yield is increased, and the catalyst-oil ratio of a catalytic cracking device can be increased to promote the conversion of heavy petroleum hydrocarbon; and meanwhile, the load and energy consumption of the absorption stable system are reduced, the process is simplified, the synergistic effect between the two devices of catalytic cracking and hydrofining is enhanced, and the processing cost is lowered.

The invention discloses a device and method for producing clean gasoline by combining catalytic cracking and hydrofining. The device comprises a reaction-regeneration system, a fractionating system, an absorption stable system and a hydrofining unit. The method comprises the following steps: adding a gasoline fractionating tower to the top of a catalytic cracking fractionating tower to divide crude gasoline into a light fraction and a heavy fraction, wherein the heavy fraction gasoline enters the hydrofining unit for selective hydrogenation desulfurization, and one part of the light fraction gasoline enters the absorption stable system to obtain stable light gasoline, and the other part of the light fraction gasoline directly returns to a reaction area at the upper part of a catalytic cracking second riser reactor to be modified under a mild condition; and blending the stable light gasoline and the modified heavy gasoline to obtain the product of clean gasoline. By adopting the method, the catalytic cracking gasoline is efficiently modified, and the catalyst-oil ratio of a catalytic cracking device can be increased to promote the conversion of heavy petroleum hydrocarbon; and meanwhile, the load and energy consumption of the absorption stable system are reduced, the synergistic effect between the two devices of catalytic cracking and hydrofining is enhanced, and the processing cost is lowered.

The present invention discloses a catalytic cracking desulfurization method of low-grade gasoline in the field of petroleum processing technology and its equipment. It is characterized by that the invented gasoline upgrading reactor adopts gasoline fast bed reactor with cylindrical structure, a portion of spent catalyst can be passed through spent catalyst coveying pipeline with flow control valve and fed into catalyst mixer, and is mixed together with regenerated catalyst coming from regenerator under the action of aqueous vapor, then fed into gasoline fast bed reactor and is contacted with low-grade gasoline feed so as to make reaction to greatly reduce sulfur content of low-grade gasoline.

The invention provides a catalytic cracking cold-hot catalyst pre-lifter which is suitable for a catalytic cracking lifting pipe reactor with at least one cold catalyst feeding and one hot catalyst feeding. The pre-lifter comprises a pre-lifting cylinder (5), a hot catalyst feeding pipe (4) and a cold catalyst feeding pipe (8), and is characterized in that a guide cylinder (3) is arranged in the pre-lifting cylinder (5) and divides the pre-lifting cylinder (5) into two communicated areas that is an inner ring (I) and an outer ring (II); and the hot and cold catalyst feeding pipes (4 and 8) are arranged between the upper edge and the lower edge of the guide cylinder. With the adoption of the pre-lifter, the cold catalyst and hot catalyst are uniformly mixed and subjected to heat exchange in a short residence time, so that the requirements of catalytic cracking reactions are satisfied effectively, the catalytic cracking reaction is strengthened and the thermal cracking reaction is inhibited, the conversion rate of the devices is increased and the selectivity of products is enhanced.

The invention discloses a catalytic conversion method to increase production propylene, which comprises the following steps: proceeding in reactor with dilution zone, lightweight hydrocarbon reactionzone and heavyweight hydrocarbon reaction zone; entering regenerated catalyst and carbon catalyst from stripping section into the dilution zone; mixing; flowing upward under the function of pre-lifting agent; entering into the lightweight hydrocarbon reaction zone; touching with the lightweight hydrocarbon at the lower of the lightweight hydrocarbon reaction zone; reacting; moving upward; touchingwith heavyweight petroleum hydrocarbon at the upper of the lightweight hydrocarbon reaction zone; reacting; moving upward; forming oil solution mixture; entering into heavyweight hydrocarbon reactionzone; touching continually; reacting; getting the carbon catalyst; entering into the stripping section to strip; getting the carbon agent; backing moiety to mixed zone; using cycle; entering the other moiety into mixed zone; using cycle; leading the reaction oil gas to separation system of subsequent product. This method can get very high productivity of propone low carbon alkene.

The invention discloses a catalytic cracking method and device. The method is characterized by comprising the following steps: introducing raw oil into bottom of a riser reactor to contact and react with a catalyst from a catalyst heat exchanger; separating oil gas after the reaction from a coked catalyst; introducing separated reaction oil gas into a fractionating tower; carrying out steam stripping on the separated coked catalyst and sending the coked catalyst into a regenerator for regeneration; sending part of the regenerated catalyst into the riser reactor from different height positions of the riser; and carry out heat transfer on the other part of the regenerated catalyst by a heat exchanger and entering the other part of the regenerated catalyst into bottom of the riser reactor. The method of the invention can lower total yield of dry gas and coke by 0.5-1.5 percentage, increase total liquid yield of liquefied gas, gasoline and diesel by more than 1 percentage, and reduce gasoline olefin volume content by 5-15 percentage.

The invention discloses a catalytic cracking method and a catalytic cracking device. According to the invention, raw oil enters the lower part of a riser reactor, and is subjected to a contact reaction with a catalyst from a catalyst pre-lift mixer; oil gas obtained after reaction is separated from spent catalyst; reaction oil gas obtained by separation is delivered into a fractionating tower, and the separated spent catalyst is regenerated; part of high-temperature regenerated catalyst after regeneration enters an external heat remover; part of cooled regenerated catalyst is delivered back to the regenerator, another part of the cooled regenerated catalyst enters the catalyst pre-lift mixer, and a third part of the cooled regenerated catalyst enters the riser reactor from different height positions of the riser. The method provided by the invention can be used for reducing dry gas and coke total yield. A total liquid yield is increased by more than 1.5 percentage points; gasoline olefin volume content is reduced by 5-15 percentage points; and SOx content in flue gas is reduced by more than 30%.

The gasoline catalytically re-converting method and reactor belongs to the field of petroleum refining technology. Before the catalyst and reacted oil-gas flow is discharged from the reactor, partial catalyst is led out, returned through the reflux pipe to the bottom of the gasoline reactor and mixed with regenerated catalyst to lower the temperature of the regenerated catalyst, so that inferior gasoline is made to contact with low temperature and high activity catalyst in high catalyst / oil ratio and for relatively long time for catalytically converting to modify or to convert into low carbon olefin. The modifying section of the reactor may be a convenient riser, a fluidized bed or their combination. The present invention can lower the content of olefin in gasoline to below 20 % and eliminate sulfur of 70 %.

The invention discloses a catalytic cracking method and device. The method comprises the following steps: introducing raw oil into a lower part of a riser reactor to contact and react with a catalyst from a catalyst heat exchanger; separating oil gas after the reaction from a coked catalyst; introducing separated reaction oil gas into a fractionating tower; carrying out steam stripping on the separated coked catalyst and sending the coked catalyst into a regenerator for regeneration; carrying out heat transfer and cooling on the regenerated catalyst and part of system prevailing wind within the catalyst heat exchanger; sending part of the regenerated catalyst into the riser reactor from different heights of the riser; and sending the other part of the regenerated catalyst into the lower part of the riser reactor. The method can reduce total yield of dry gas and coke by 0.8-2 percentage, increase total liquid yield of liquefied gas, gasoline and diesel by 1.2 percentage, and reduce volume content of gasoline olefin by 5-15 percentage.

The invention discloses a catalytic cracking method of increasing gasoline yield, which comprises the following steps: (A) feeding raw material oil to the lower part of a first lifting tube reactor and carrying out a contact reaction to the raw material oil with a catalyst from a pre-lifting mixer; (B) feeding a to-be-regenerated catalyst from the first lifting tube reactor into a steam stripping part of a main precipitator, performing steam stripping and regenerating the catalyst in a regenerator; (C) feeding catalytic diesel or hydrotreated catalytic diesel into the lower part of a second lifting tube reactor and carrying out a contact reaction with the catalyst from the regenerator; (D) feeding the to-be-regenerated catalyst from the second lifting tube reactor into a steam stripping part of a sub precipitator; (E) performing air stripping to the to-be-regenerated catalyst from the steam stripping part of the sub precipitator, feeding one part of the catalyst into the regenerator and regenerating the catalyst, and feeding the other one part of the catalyst into the pre-lifting mixer and mixing the catalyst with the regenerated catalyst from the regenerator; and (F) feeding the mixed catalyst into the lower part of the first lifting tube reactor and carrying out a contact reaction with the raw material oil. By means of the method, the catalytic cracking device is increased by 3-20% in gasoline yield, is increased by more than 0.5 units in RON of gasoline and is reduced in the content of olefin by more than 3% by volume. The gasoline directly produced in the second lifting tube reactor is higher than 96 in RON and is less than 10% in the content of olefin.

The invention relates to a two-stage regeneration catalytic cracking method, belonging to the technical field of petrochemical industry and aiming at solving the problem that the traditional two-stage regeneration catalytic cracking is unsuitable for regulating solvent-oil ratio within a large range. The two-stage regeneration catalytic cracking method comprises the steps of reaction coking, catalyst deactivation and two-stage catalyst regeneration. The two-stage regeneration catalytic cracking method is characterized in that heat removal is set in two-stage regeneration processes; when the solvent-oil ratio is regulated within a large range, by regulating the heat removal of the two-stage regeneration, the invariable main air quantity of the two-stage regeneration can be realized, the temperature of the two-stage regeneration can be controlled to ensure the coking effect, and a regenerated catalyst with temperature of 620-700 DEG C is provided for a reaction process. The invention also provides a device for realizing the method. The device comprises a first regenerator, a second regenerator, a regenerant cooler and an outer combined heat removing device. The two-stage regeneration catalytic cracking method disclosed by the invention can be used for a heavy oil catalytic cracking device and can enhance the solvent-oil ratio of the device, reduce the coking rate of the device and increase the product yield.

The invention discloses a heavy oil catalytic cracking method, belongs to the technical field of petroleum chemical industry, is used for processing heavy oil, can improve the catalyst-to-oil ratio, reduces coke and dry gas yields, improves product yield, and solves reactor coking. The heavy oil catalytic cracking method includes the processes of catalyst feeding, raw material oil feeding, raw material oil vaporization, gas-solid contact, catalytic cracking reaction and gas-solid separation, and is characterized in that through arrangement of temperature reduction with a regeneration agent, heat collection with a pre-lifting device, and heat collection at the middle part of a lifting pipe reactor, the catalyst-to-oil ratio is increased, a mixing temperature of a feeding section is improved, the catalyst activity in the catalytic cracking process is improved, and the feeding heavy oil vaporization rate is improved; through arrangement of a closed fast separation system, the oil and gas residence time in a settler is shortened. The method can reduce the dry gas and coke yields, increase the product yield, improve the product quality and solve the problem of coking of the lifting pipe reactor and the settler. A device for realizing the method is also provided, includes a regeneration agent temperature reducer, the pre-lifting device, a heat collector, a lifting pipe middle-part heat collection facility and a closed fast separation facility, and is the catalytic cracking and catalytic pyrolysis device applied for processing the heavy oil.