Summary of the invention:
The object of the invention just is the deficiency to above-mentioned prior art, and the preparation method of a kind of dialkene removal hydrogenation protecting agent is provided;
The purpose of this invention is to provide the agent of a kind of dialkene removal hydrogenation protecting;
Another object of the present invention provides the application of a kind of dialkene removal hydrogenation protecting agent.
Order of the present invention through following technology side by realizing:
The preparation of dialkene removal hydrogenation protecting agent comprises following order and step:
A, select diameter 9mm-15mm, hole count 3-7 aluminum oxide porous ball and internal diameter are 1mm-3mm, and length is that the Raschig ring of 5mm-7mm is made carrier, and respectively 800 ℃-1000 ℃ high temperature kiln roasting 1-3 hour, it is subsequent use to be cooled to room temperature;
B, preparation maceration extract are pressed mass fraction, are dissolved in 40 parts of deionized waters with 1 part of nickel nitrate and 2 parts of ammonium metatungstates, process tungsten nickel co-impregnated solution;
C, dipping are put into the maceration extract for preparing with baked porous ball or Raschig ring, and maceration extract will not have the porous ball or more than the Raschig ring 100mm, soaked 3-5 hour, made protective agent, emit raffinate and stay the inferior maceration extract usefulness of joining;
D, drying, the protective agent that dipping is good was dried 1-3 hour under 100 ℃-120 ℃ condition;
E, roasting, the protective agent that drying is crossed was processed the agent of dialkene removal hydrogenation protecting at 450 ℃ of-500 ℃ of following roasting 2-3 hours.
The application of dialkene removal hydrogenation protecting agent; The agent of dialkene removal hydrogenation protecting is contained in the superiors of hydrogenation reactor bed; Reactor filling from top to bottom is major catalyst → desilicification catalyst → deferrization catalyst → Raschig ring dialkene removal hydrogenation protecting agent → aluminum oxide porous ball dialkene removal hydrogenation protecting agent in proper order, and the granular size of dialkene removal hydrogenation protecting agent and porosity should meet the requirement of grading loading.
Order of the present invention can also be pressed through following technology side and realize:
The loading height of aluminum oxide porous ball dialkene removal hydrogenation protecting agent is not less than 200mm, and the loading height of Raschig ring dialkene removal hydrogenation protecting agent is 300-500mm.
Beneficial effect: the diene polymerization reaction does not take place in the agent of dialkene removal hydrogenation protecting, only carry out the diene hydrogenation saturated reaction, because the agent of dialkene removal hydrogenation protecting is seated in the topmost of reactor bed; After reactant gets into reactor; At first carry out the dialkene removal reaction, after alkadienes is sloughed or sloughed basically, contact deferrization catalyst, desilicification catalyst and major catalyst more successively; Even certain acidity is arranged on these catalyst and protective agent; These acidity also are that the completion catalytic action is needed, and the diene polymerization reaction can not take place, and have therefore prevented the too fast increase of bed pressure drop effectively.Protectant preparation technology is simple, and is with low cost, and it is too fast effective to have prevented that bed pressure drop from increasing.
The specific embodiment:
Below in conjunction with embodiment the present invention is done further detailed description:
The preparation of dialkene removal hydrogenation protecting agent comprises following order and step:
A, select diameter 9mm-15mm, hole count 3-7 aluminum oxide porous ball and internal diameter are 1mm-3mm, and length is that the Raschig ring of 5mm-7mm is made carrier, and respectively 800 ℃-1000 ℃ high temperature kiln roasting 1-3 hour, it is subsequent use to be cooled to room temperature;
B, preparation maceration extract are pressed mass fraction, are dissolved in 40 parts of deionized waters with 1 part of nickel nitrate and 2 parts of ammonium metatungstates, process tungsten nickel co-impregnated solution;
C, dipping are put into the maceration extract for preparing with baked porous ball or Raschig ring, and maceration extract will not have the porous ball or more than the Raschig ring 100mm, soaked 3-5 hour, made protective agent, emit raffinate and stay the inferior maceration extract usefulness of joining;
D, drying, the protective agent that dipping is good was dried 1-3 hour under 100 ℃-120 ℃ condition;
E, roasting, the protective agent that drying is crossed was processed the agent of dialkene removal hydrogenation protecting at 450 ℃ of-500 ℃ of following roasting 2-3 hours.
The application of dialkene removal hydrogenation protecting agent; The agent of dialkene removal hydrogenation protecting is contained in the superiors of hydrogenation reactor bed; Reactor filling from top to bottom is major catalyst → desilicification catalyst → deferrization catalyst → Raschig ring dialkene removal hydrogenation protecting agent → aluminum oxide porous ball dialkene removal hydrogenation protecting agent in proper order, and the granular size of dialkene removal hydrogenation protecting agent and porosity should meet the requirement of grading loading.
The loading height of aluminum oxide porous ball dialkene removal hydrogenation protecting agent is not less than 200mm, and the loading height of Raschig ring dialkene removal hydrogenation protecting agent is 300-500mm.
Embodiment 1
The preparation of dialkene removal hydrogenation protecting agent comprises following order and step:
A, select diameter 9mm, aluminum oxide porous ball that hole count is 3 and internal diameter are 1mm, and length is that the Raschig ring of 5mm is made carrier, and respectively 800 ℃ high temperature kiln roasting 1 hour, it is subsequent use to be cooled to room temperature;
B, preparation maceration extract are dissolved in the 40Kg deionized water with 1Kg nickel nitrate and 2Kg ammonium metatungstate, process tungsten nickel co-impregnated solution;
C, dipping are put into the maceration extract for preparing with baked porous ball or Raschig ring, and maceration extract will not have the porous ball or more than the Raschig ring 100mm, soaked 5 hours, made protective agent, emit raffinate and stay the inferior maceration extract usefulness of joining;
D, drying, the protective agent that dipping is good was dried 3 hours under 120 ℃ condition;
E, roasting, the protective agent that drying is crossed is processed the agent of dialkene removal hydrogenation protecting 500 ℃ of following roastings 3 hours.
The application of dialkene removal hydrogenation protecting agent; The agent of dialkene removal hydrogenation protecting is contained in the superiors of hydrogenation reactor bed; Reactor filling from top to bottom is major catalyst → desilicification catalyst → deferrization catalyst → Raschig ring dialkene removal hydrogenation protecting agent → aluminum oxide porous ball dialkene removal hydrogenation protecting agent in proper order, and the granular size of dialkene removal hydrogenation protecting agent and porosity should meet the requirement of grading loading.
The loading height of aluminum oxide porous ball dialkene removal hydrogenation protecting agent is not less than 200mm, and the loading height of Raschig ring dialkene removal hydrogenation protecting agent is 300mm.
Embodiment 2
The preparation of dialkene removal hydrogenation protecting agent comprises following order and step:
A, select diameter 15mm, aluminum oxide porous ball that hole count is 7 and internal diameter are 3mm, and length is that the Raschig ring of 6mm is made carrier, and respectively 900 ℃ high temperature kiln roasting 2 hours, it is subsequent use to be cooled to room temperature;
B, preparation maceration extract are dissolved in the 20Kg deionized water with 0.5Kg nickel nitrate and 1Kg ammonium metatungstate, process tungsten nickel co-impregnated solution;
C, dipping are put into the maceration extract for preparing with baked porous ball or Raschig ring, and maceration extract will not have the porous ball or more than the Raschig ring 100mm, soaked 4 hours, made protective agent, emit raffinate and stay the inferior maceration extract usefulness of joining;
D, drying, the protective agent that dipping is good was dried 2 hours under 110 ℃ 1 condition;
E, roasting, the protective agent that drying is crossed is processed the agent of dialkene removal hydrogenation protecting 480 ℃ of following roastings 2.5 hours.
The application of dialkene removal hydrogenation protecting agent; The agent of dialkene removal hydrogenation protecting is contained in the superiors of hydrogenation reactor bed; Reactor filling from top to bottom is major catalyst → desilicification catalyst → deferrization catalyst → Raschig ring dialkene removal hydrogenation protecting agent → aluminum oxide porous ball dialkene removal hydrogenation protecting agent in proper order, and the granular size of dialkene removal hydrogenation protecting agent and porosity should meet the requirement of grading loading.
The loading height of aluminum oxide porous ball dialkene removal hydrogenation protecting agent is not less than 200mm, and the loading height of Raschig ring dialkene removal hydrogenation protecting agent is 450mm.
Embodiment 3
The preparation of dialkene removal hydrogenation protecting agent comprises following order and step:
A, select diameter 15mm, aluminum oxide porous ball that hole count is 7 and internal diameter are 1mm, and length is that the Raschig ring of 7mm is made carrier, and respectively 1000 ℃ high temperature kiln roasting 1 hour, it is subsequent use to be cooled to room temperature;
B, preparation maceration extract are dissolved in the 200Kg deionized water with 5Kg nickel nitrate and 10Kg ammonium metatungstate, process tungsten nickel co-impregnated solution;
C, dipping are put into the maceration extract for preparing with baked porous ball or Raschig ring, and maceration extract will not have the porous ball or more than the Raschig ring 100mm, soaked 3 hours, made protective agent, emit raffinate and stay the inferior maceration extract usefulness of joining;
D, in dry, the protective agent that dipping is good was dried 1 hour under 100 ℃ condition;
E, roasting, the protective agent that drying is crossed is processed the agent of dialkene removal hydrogenation protecting 450 ℃ of following roastings 3 hours.
The application of dialkene removal hydrogenation protecting agent; The agent of dialkene removal hydrogenation protecting is contained in the superiors of hydrogenation reactor bed; Reactor filling from top to bottom is major catalyst → desilicification catalyst → deferrization catalyst → Raschig ring dialkene removal hydrogenation protecting agent → aluminum oxide porous ball dialkene removal hydrogenation protecting agent in proper order, and the granular size of dialkene removal hydrogenation protecting agent and porosity should meet the requirement of grading loading.
The loading height of aluminum oxide porous ball dialkene removal hydrogenation protecting agent is not less than 200mm, and the loading height of Raschig ring dialkene removal hydrogenation protecting agent is 500mm.