62results about How to "Solve the problem of not being able to operate stably for a long period of time" patented technology

The invention relates to a hydrogenation method for production of a low-condensation point motor fuel from biolipid. The method comprises the following steps that: biolipid is used as raw oil, and the raw oil and hydrogen pass through a first-stage hydrogenation reaction zone under hydrogenation operation conditions, wherein the first-stage hydrogenation reaction zone comprises at least two hydrogenation reactors, and the raw oil and hydrogen pass through one reactor operated at a low temperature at first and then pass through the other reactor operated at a high temperature; a material flow generated in hydrogenation is separated, obtained hydrogen-rich gas is recycled, and obtained liquid enters into a second-stage hydro-upgrading reaction zone; and a material flow generated in hydro-upgrading is separated, obtained side hydrogen is recycled, and an obtained liquid product is subjected to fractionation so as to obtain naphtha and low-condensation point diesel oil, wherein a sulfur-containing substance is supplemented to reaction materials so as to maintain the content of hydrogen sulfide in circulation gas. Compared with the prior art, the method provided by the invention can produce the low-condensation point motor fuel while guaranteeing activity stability of a catalyst and long-period stable running of an apparatus.

The present invention relates to a two-stage hydrogenation method for producing a low freezing point motor fuel. The method is characterized in that a biological oil raw material and hydrogen pass through a first stage hydrogenation reaction zone containing at least two hydrogenation reactors, wherein the mixture passes through a low temperature operation reactor, and then passes through a high temperature operation reactor; the hydrogen-rich gas is recycled at the first stage; the liquid enters a second stage hydrogenation modification reaction zone; the sub-hydrogen gas after hydrogenation modification is recycled at the second stage; the liquid product is subjected to fractionation to obtain naphtha and a low freezing point diesel oil; and under a reaction state, active components of the hydrogenation catalyst used at the first stage are one or a plurality of materials selected from sulfurization state W, Mo, Ni and Co, and active components of the hydrogenation catalyst used at the second stage are one or a plurality of materials selected from reduction state W, Mo, Ni and Co. Compared to the method in the prior art, the method of the present invention has the following advantages that: a low freezing point motor fuel can be produced, activity stability of the catalyst can be ensured, and stable and long period device operation can be ensured.

The invention relates to a hydrogenation combination method for producing high-quality kerosene. The hydrogenation combination method comprises the steps that firstly, under the condition of hydrogenation, biolipid and recycle hydrogen are mixed and pass through a hydrotreating reaction zone, the gas obtained by separating a hydrotreating generated material flow is recycled, the liquid obtained by separation, the raw kerosene and the recycle hydrogen are mixed and pass through a hydrofining reaction zone and then enter a hydro-upgrading reaction zone at least comprising hydrogenation catalysts with isomerization performance, and the liquid obtained by separating a hydro-upgrading generated material flow is continuously fractionated, thus obtaining naphtha and high-quality kerosene products, wherein in the reaction state, the hydrogenation active components of the hydrogenation catalysts used in the hydrotreating reaction zone are one or more of W, Mo, Ni and Co in the reduction state. Compared with the prior art, the method has the advantages that not only can the storage stability of the biolipid as fuel oil be effectively improved but also the high-quality jet fuel product can be directly produced.

The invention relates to a combination method for producing high-quality kerosene through hydrogenation. The combination method comprises the steps that firstly, under the condition of hydrogenation, biolipid and recycle hydrogen are mixed and pass through a hydrotreating reaction zone, the gas obtained by separating a hydrotreating generated material flow is recycled, the liquid obtained by separation, raw kerosene and the recycle hydrogen are mixed and pass through a hydrofining reaction zone and then enter a hydro-upgrading reaction zone at least comprising hydrogenation catalysts with isomerization performance, and the liquid obtained by separating a hydro-upgrading generated material flow is continuously fractionated, thus obtaining naphtha and high-quality kerosene products, wherein in the reaction state, the hydrogenation active components of the hydrogenation catalysts used in the hydrotreating reaction zone are Pt and / or Pd in the reduction state. Compared with the prior art, the method has the advantages that not only can the storage stability of the biolipid as fuel oil be effectively improved but also high-quality jet fuel products can be directly produced.

The present invention relates to a hydrogenation method for producing a high quality low freezing point motor fuel from a biological oil. The method is characterized in that a biological oil is adopted as a raw material oil; under a hydrogenation operation condition, the raw material oil and hydrogen gas pass through a first stage hydrogenation reaction zone containing at least two hydrogenation reactors, wherein the raw material oil and the hydrogen gas sequentially pass through a low temperature operation reactor and a high temperature operation reactor; hydrogen-rich gas separated from the stream generated from hydrogenation is recycled, and the separated liquid enters a second stage hydrogenation modification reaction zone; sub-hydrogen gas separated from the stream generated from hydrogenation modification is recycled, and the separated liquid product is subjected to fractionation to obtain naphtha and a low freezing point diesel oil; and under a reaction state, active components of the hydrogenation catalysts used at the first stage and the second stage are sulfurization state Pt and / or Pd. Compared to the method in the prior art, the method of the present invention has the following advantages that: storage stability can be effectively improved when the biological oil is adopted as a fuel oil, and hydrogenation device stability can be effectively prolonged.

The invention relates to a hydro-upgrading method for production of a low-condensation point motor fuel from biolipid. The method comprises the following steps that: biolipid is used as raw oil, and the raw oil and hydrogen pass through a first-stage hydrogenation reaction zone, wherein the first-stage hydrogenation reaction zone comprises at least two hydrogenation catalyst beds in which the content of a hydrogenation active component successively increases; a material flow generated in first-stage hydrogenation is separated, obtained hydrogen-rich gas is recycled, and obtained liquid enters into a second-stage hydro-upgrading reaction zone; and a material flow generated in second-stage hydrogenation is separated, obtained side hydrogen is recycled, and an obtained liquid product is subjected to fractionation so as to obtain naphtha and low-condensation point diesel oil; wherein in a reaction state, the active component of all the hydrogenation catalysts is one or more selected from the group consisting of W, Mo, Ni and Co in a reduction state. Compared with the prior art, the method provided by the invention can produce the low-condensation point motor fuel while guaranteeing activity stability of the catalysts and long-period stable running of an apparatus.

The invention relates to a hydrogenation combination method for producing high-quality kerosene. The hydrogenation combination method comprises the steps that firstly, under the condition of hydrogenation, biolipid and recycle hydrogen are mixed and pass through a hydrotreating reaction zone, the gas obtained by separating a hydrotreating generated material flow is recycled, the liquid obtained by separation, the raw kerosene and the recycle hydrogen are mixed and pass through a hydrofining reaction zone and then enter a hydro-upgrading reaction zone at least comprising hydrogenation catalysts with isomerization performance, and the liquid obtained by separating a hydro-upgrading generated material flow is continuously fractionated, thus obtaining naphtha and kerosene products, wherein in the reaction state, the hydrogenation active components of the hydrogenation catalysts used in the hydrotreating reaction zone are one or more of W, Mo, Ni and Co in the sulfuration state. Compared with the prior art, the method has the advantages that not only can the storage stability of the biolipid as fuel oil be effectively improved but also the high-quality kerosene can be directly produced.

The present invention relates to a two-stage hydrogenation method for producing a low freezing point motor fuel. The method is characterized in that a biological oil is adopted as a raw material oil; under a hydrogenation condition, the raw material oil and hydrogen are mixed, and pass through a first stage hydrogenation reaction zone; the stream generated from hydrogenation is separated to obtain hydrogen-rich gas; the hydrogen-rich gas is recycled at the first stage; the separated liquid enters a second stage hydrogenation modification reaction zone; the sub-hydrogen gas separated from the oil generated through second stage hydrogenation is recycled at the second stage circulation; and the separated liquid product is subjected to fractionation to obtain naphtha and low freezing point diesel oil, wherein hydrogenation activity components of the hydrogenation catalyst used at the first stage are one or a plurality of materials selected from sulfurization state W, Mo, Ni and Co and hydrogenation activity components of the hydrogenation catalyst used at the second stage are one or a plurality of materials selected from reduction state W, Mo, Ni and Co under a reaction state. Compared to the method in the prior art, the two-stage hydrogenation method of the present invention has the following characteristics that: the low freezing point motor fuel can be produced, activity stability of the catalyst can be ensured, and stable and long period device operation can be ensured.

The invention relates to a hydrogenation method for producing a high-quality motor fuel with biological grease. The method comprises: taking one or several kinds of biological grease as raw oil; passing the raw oil and hydrogen through at least two precious metal hydrogenation catalyst beds, the hydrogenation active component contents of which increase in order, leaving the raw oil and hydrogen first to pass through a catalyst bed with low hydrogenation active component content and then to pass through a catalyst bed with high hydrogenation active component content, with reduced Pt and / or Pd adopted as the hydrogenation active component under a reaction state; separating a hydrogenation effluent into a gas phase and a liquid phase, recycling the gas phase and leaving the liquid phase to enter a fractionating tower; conducting fractionation in the fractionating tower so as to obtain naphtha, diesel oil and unconverted oil, circulating part of the diesel oil and / or part of the unconverted oil back to a reaction system. Compared with prior art, the method of the invention not only can effectively improve the storage stability of biological grease taken as fuel oil, and simultaneously can realize long-period stable operation of a device.

The invention discloses a conversion method of heavy and residual oil suspension bed hydrogenation. The method comprises the steps as follows: a feeding flow containing hydrogen and heavy and residual oil passes through a honeycomb-shaped or similar structure integrated reactor of a hydrogenation catalyst; the linear speed of liquid and gas in a hollow tower is controlled and a taylor flow is formed in the structural integrated reactor; and as the gas and the liquid are uniformly distributed in each passage, better gas-liquid distribution can be formed, the catalytic efficiency of the reactorcan be greatly improved, and the running period can be effectively prolonged.

The present invention relates to a hydrogenation method for producing a low freezing point motor fuel from a biological oil. The method is characterized in that a biological oil is adopted as a raw material oil; under a hydrogenation condition, the raw material oil and hydrogen are mixed, and pass through a first stage hydrogenation reaction zone; hydrogen-rich gas separated from a stream generated through hydrogenation is recycled; the separated liquid enters a second stage hydrogenation modification reaction zone; and sub-hydrogen gas separated from the oil generated through second stage hydrogenation is recycled, and the separated liquid product is subjected to fractionation to obtain naphtha and a low freezing point motor fuel. Compared with the method in the prior art, the method of the present invention has the following advantages that: a low freezing point motor fuel can be produced, activity stability of the catalyst can be ensured, and stable and long period device operation can be ensured.