Coal-based needle coke pretreating process multidirectional premixer and premixing method
阅读说明：本技术 煤系针状焦预处理工艺用多向预混合器及预混方法 (Coal-based needle coke pretreating process multidirectional premixer and premixing method ) 是由 朱兴建 张柯旭 王莹 吴凤娥 王永志 朱烨 曹坤 于 2019-09-30 设计创作，主要内容包括：本发明属于煤沥青连续淬取、沉降制备精制沥青生产优质针状焦技术领域,尤其是涉及一种煤系针状焦预处理工艺用多向预混合器及预混方法,多向预混合器其特征在于包括混合器壳体,设置在此混合器壳体顶部的旋流器,设置在混合器壳体底部的出口F,设置在旋流器顶部的主要原料进口A,沿混合器壳体圆周侧壁均匀设置的叶轮式分散器入口B、C和D,设置在混合器壳体下部的测量口E,设置在混合器壳体内的格式筛板,混合器壳体为上部锥体、中部圆柱体和下部锥体的组合体,旋流器由混合器壳体上部锥体贯穿进混合器壳体的中部圆柱体内,测量口E设置在下部椎体上。本发明结构简单,操作方便,占地小,动力消耗低,可实现即时的在线溶剂配比调整。(It continuously quenches and takes the invention belongs to coal tar pitch, sedimentation prepares refined bitumen and produces high-quality STUDY OF NEEDLE COKE TECHNOLOGY field, more particularly, to a kind of coal-based needle coke pretreating process multidirectional premixer and premixing method, it is characterized by comprising mixer cases for multidirectional premixer, cyclone at the top of this mixer case is set, the outlet F of mixer case bottom is set, the primary raw material import A of cyclone apex is set, the vane type disperser entrance B being uniformly arranged along mixer case circumferential side wall, C and D, the measuring mouth E of mixer case lower part is set, format sieve plate in mixer case is set, mixer case is top cone, the assembly of middle part cylindrical body and lower part cone, cyclone is run through by mixer case top cone into the middle part cylindrical body of mixer case, measuring mouth E is arranged in lower part centrum On.The configuration of the present invention is simple, it is easy to operate, it takes up little area, power consumption is low, it can be achieved that instant online solvent burden ratio adjusts.)
1. a kind of multidirectional premixer of coal-based needle coke pretreating process, it is characterised in that including mixer case, setting exists The outlet F of the mixer case bottom is arranged in cyclone at the top of this mixer case, is arranged in the cyclone apex Primary raw material import A, the vane type disperser entrance B being uniformly arranged along the mixer case circumferential side wall, vane type point Device entrance C and vane type disperser entrance D is dissipated, the measuring mouth E of the mixer case lower part is set, is arranged in the mixing Format sieve plate in device shell and positioned at lower part,
The mixer case is the assembly of top cone, middle part cylindrical body and lower part cone, and the cyclone is from institute The mixer case top cone stated runs through into the middle part cylindrical body of mixer case, and the measuring mouth E is arranged described On the lower part centrum of mixer case.
2. the multidirectional premixer of coal-based needle coke pretreating process according to claim 1, it is characterised in that described Format sieve plate is located at the middle part cylindrical body bottom-up 1/5th of the mixer case.
3. the multidirectional premixer of coal-based needle coke pretreating process according to claim 1, it is characterised in that described Vane type disperser entrance B, vane type disperser entrance C and vane type disperser entrance D are located in the mixer case At the one third of portion's cylindrical body from up to down, vane type disperser entrance B, vane type disperser entrance C and the impeller Formula disperser entrance D is circumferentially in 1200Uniformly distributed, the measuring mouth E is located at the lower part centrum of the mixer case Medium position.
4. utilizing the premixing method of the multidirectional premixer of coal-based needle coke pretreating process, it is characterised in that including walking as follows It is rapid:
(1) primary raw material import A liquid is under 0.01m/s-2m/s flow velocity and 0.01MPa-0.5MPa pressure, through A mouthfuls of cyclones It is sprayed in 45 DEG C of rotated versions, forms ultromotivity Stirring ability in multidirectional premixer inner；
(2) B, C, D are different solvents liquid-inlet, and B, C, D liquid are pressed in 0.01m/s-2m/s flow velocity and 0.01MPa-0.5MPa It sprays in 30 DEG C of degree angles with spiral form under power through entry impeller formula disperser, is produced with the main feed that main material import A enters Raw collision mixes under the effect of ultromotivity Stirring；
(3) incorporation time is -30 seconds 25 seconds in multidirectional premixer, is then cut through multidirectional premixer bottom format sieve plate It cuts, flowed out after current stabilization by lower part outlet F.
Technical field
Continuously quench the invention belongs to coal tar pitch take, sedimentation prepares refined bitumen and produces high-quality STUDY OF NEEDLE COKE TECHNOLOGY field, especially It is to be related to a kind of coal-based needle coke pretreating process multidirectional premixer and premixing method.
Background technique
Needle coke has metallic luster, and structure is strip, and visually viewing is needle-shaped, and hence obtain one's name needle coke.Use coal tar pitch The needle coke of production is coal-based needle coke, and the needle coke of petroleum fraction production is oil system needle coke, and purposes is the same, and performance is to take Tropism and good conductivity.The mainly primary raw material of manufacture refining finished steel ultra-high power graphite electrode.Currently, needle coke is also extensive Be used for field of lithium.It is the indispensable artificial graphite raw material of new energy the features such as long service life with specific capacity height One of.
Needle coke production technology is made of three units respectively: 1. feed material preparation units 2. delayed coking unit 3. green coke Calcine unit.During producing needle coke, feed material preparation units are the important links of a decision needle coke quality.It is raw Producing needle coke process is by softening point in 35 DEG C -40 DEG C of coal tar soft asphalt and two kinds of solvents or two kinds of mixed solvents of recycling Mixing carries out extraction sedimentation, obtains purification maltha raw material as production needle coke of the quinoline insolubles less than 0.1%.At present Raw material pretreatment process generallys use several solvent surge-tanks substantially, in advance by two kinds of fresh solvents separately again add-back receive two kinds Mixed solvent is detected after being stirred in proportion in solvent surge-tank, generally requires the completion of 5 hours or so time.Then It send through pipeline to raw material maltha pipeline and mixes, then be sufficiently mixed by pipeline static mixer into carrying out weight in subsider Mutually separate.
The problem of process above is: plant area face is big, investment is more, power consumption is high, cost is big, employment is more, is difficult reality Existing intelligent control.More importantly when the molecular weight of raw material maltha changes, subsider inlet amount will be bottomed out, The solvent burden ratio in solvent surge-tank is waited to readjust, system re-establishes balance again, produces qualified light phase oil, a week Phase wants a hour more than 10, or even the longer time, cannot adjust solvent burden ratio in time online.System material balance and mesh can be given in this way Mark product quality brings very big difficulty, complex process, bad control.
Summary of the invention
The object of the present invention is to provide a kind of coal-based needle coke pretreating process multidirectional premixer and premixing method, with Overcome deficiency present in former needle coke solvent method raw material pretreatment process.
The purpose of the present invention is what is realized by following technical proposals:
The multidirectional premixer of coal-based needle coke pretreating process of the invention, it is characterised in that including mixer case, setting The outlet F of the mixer case bottom is arranged in cyclone at the top of this mixer case, is arranged on the cyclone top The primary raw material import A in portion, vane type disperser entrance B, the vane type being uniformly arranged along the mixer case circumferential side wall The measuring mouth E of the mixer case lower part is arranged in disperser entrance C and vane type disperser entrance D, and setting is described mixed Format sieve plate in clutch shell and positioned at lower part,
The mixer case is the assembly of top cone, middle part cylindrical body and lower part cone, and the cyclone is from institute The mixer case top cone stated runs through into the middle part cylindrical body of mixer case, and the measuring mouth E is arranged described On the lower part centrum of mixer case.
The format sieve plate is located at the middle part cylindrical body bottom-up 1/5th of the mixer case.
Vane type disperser entrance B, vane type disperser entrance C and the vane type disperser entrance D is located at described At the one third of the middle part cylindrical body of mixer case from up to down, the vane type disperser entrance B, vane type dispersion Device entrance C and vane type disperser entrance D is circumferentially in 1200Uniformly distributed, the measuring mouth E is located at the mixer case Lower part centrum medium position.
Utilize the coal-based needle coke pretreating process premixing method of multidirectional premixer, it is characterised in that including walking as follows It is rapid:
(1) primary raw material import A liquid is under 0.01m/s-2m/s flow velocity and 0.01MPa-0.5MPa pressure, through A mouthfuls of cyclones It is sprayed in 45 DEG C of rotated versions, forms ultromotivity Stirring ability in multidirectional premixer inner；
(2) B, C, D are different solvents liquid-inlet, and B, C, D liquid are pressed in 0.01m/s-2m/s flow velocity and 0.01MPa-0.5MPa It sprays in 30 DEG C of degree angles with spiral form under power through entry impeller formula disperser, is produced with the main feed that main material import A enters Raw collision mixes under the effect of ultromotivity Stirring；
(3) incorporation time is -30 seconds 25 seconds in multidirectional premixer, is then cut through multidirectional premixer bottom format sieve plate It cuts, flowed out after current stabilization by lower part outlet F.
Advantages of the present invention:
Coal-based needle coke pretreating process multidirectional premixer and premixing method of the invention, structure is simple, easy to operate, accounts for Ground is small, and power consumption is low, it can be achieved that instant online solvent burden ratio adjusts.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the top view of Fig. 1 of the present invention.
Specific embodiment
A specific embodiment of the invention is further illustrated with reference to the accompanying drawing.
As shown in Figure 1, 2, the multidirectional premixer of coal-based needle coke pretreating process of the invention, it is characterised in that including Mixer case 2 is arranged in the cyclone 1 at this 2 top of mixer case, the outlet of 2 bottom of mixer case is arranged in The primary raw material import A at 1 top of cyclone, the leaf being uniformly arranged along 2 circumferential side wall of mixer case is arranged in F Wheeled disperser entrance B, vane type disperser entrance C and vane type disperser entrance D are arranged under the mixer case 2 The measuring mouth E4 in portion is arranged in the mixer case 2 and is located at the format sieve plate 3 of lower part,
The mixer case 2 be top cone, middle part cylindrical body and lower part cone assembly, the cyclone 1 from The 2 top cone of mixer case runs through into the middle part cylindrical body of mixer case 2, and the measuring mouth E4 setting exists On the lower part centrum of the mixer case 2.
The format sieve plate 3 is located at the middle part cylindrical body bottom-up 1/5th of the mixer case 2.
Vane type disperser entrance B, vane type disperser entrance C and the vane type disperser entrance D is located at described At the one third of the middle part cylindrical body of mixer case 2 from up to down, the vane type disperser entrance B, vane type point Dissipating device entrance C and vane type disperser entrance D is circumferentially in 1200Uniformly distributed, the measuring mouth E4 is located at the mixer The medium position of the lower part centrum of shell 2.
Utilize the coal-based needle coke pretreating process premixing method of multidirectional premixer, it is characterised in that including walking as follows It is rapid:
(1) primary raw material import A liquid is under 0.01m/s-2m/s flow velocity and 0.01MPa-0.5MPa pressure, through A mouthfuls of cyclones 1 It is sprayed in 45 DEG C of rotated versions, forms ultromotivity Stirring ability in multidirectional premixer inner；
(2) B, C, D are different solvents liquid-inlet, and B, C, D liquid are pressed in 0.01m/s-2m/s flow velocity and 0.01MPa-0.5MPa It sprays in 30 DEG C of degree angles with spiral form under power through entry impeller formula disperser, is produced with the main feed that main material import A enters Raw collision mixes under the effect of ultromotivity Stirring；
(3) incorporation time is -30 seconds 25 seconds in multidirectional premixer, is then cut through multidirectional premixer bottom format sieve plate 3 It cuts, flowed out after current stabilization by lower part outlet F.
Coal-based needle coke pretreating process of the invention is two kinds of recycling mixed solvents with the function of multidirectional premixer To enter from A mouthfuls, A mouthful are main feed inlet, below B, C, D mouthful two of them be two kinds of fresh solvent imports, another is spare Mouthful, mainly by recycled at two kinds the obtained density value of slot sample examination among mixed solvents be computed obtain other two kinds it is molten The density difference of agent obtains the supplement proportional quantity of other two solvent, realizes that instant online solvent is matched using multidirectional premixer Than adjustment.Multidirectional premixer monnolithic case is the composite unit structure of top cone, middle part cylindrical body and lower part cone, multidirectional pre- Internal mixer is that ultromotivity stirs turbulent area from minimum 4/5ths above sections of lighting of middle part cylindrical body, with format sieve plate 3 For boundary, remainder five/a part is stabilization area, and multidirectional premixer total measurement (volume) is 2.5 times to 3 times for the treatment of capacity maximum value.
The import of uniformly distributed tetra- different liquids of A, B, C, D outside multidirectional premixer, below one outlet F, be wherein for A mouthfuls Two kinds of mixed solvent imports.Main body entrance A liquid is under 0.01m/s-2m/s flow velocity and 0.01MPa-0.5MPa pressure, through A mouthfuls Cyclone 1 is sprayed in 45 DEG C of rotated versions, forms ultromotivity Stirring ability in multidirectional premixer inner；B, C, D are not With solvent liquid import, three imports horizontal direction on multidirectional premixer outer wall is in 1200It is uniformly distributed, apart from multidirectional premixing The middle part cylindrical body top length of device is the one third of outer wall straight section overall length, B, C, D liquid in 0.01m/s-2m/s flow velocity and It is sprayed in 30 DEG C of degree angles with spiral form under 0.01MPa-0.5MPa pressure through entry impeller formula disperser, with mixed solvent liquid The main feed that body import A enters generates collision, mixes under the effect of ultromotivity Stirring.
Incorporation time is -30 seconds 25 seconds in multidirectional premixer, is then cut through multidirectional premixer bottom format sieve plate 3 It cuts, flowed out after current stabilization by lower part outlet F, mixed with raw material maltha and enter pipeline static mixer depth simultaneously and mix, then It send to subsider progress weight and mutually separates.
The multidirectional premixer of coal-based needle coke pretreating process of the invention, structure is simple, easy to operate, small investment, It takes up little area, power consumption is low, it can be achieved that instant online solvent burden ratio adjusts.