阅读说明：本技术 一种焦炭粘合剂 (Coke adhesive ) 是由 邓宏达 刘哲 王鑫 吕云飞 昝大鑫 于 2020-07-28 设计创作，主要内容包括：本申请公开了一种焦炭粘合剂,涉及工业粘合剂技术领域。本申请所述的焦炭粘合剂采用加氢残渣制成,加氢残渣由重油、渣油、煤粉中的一种或多种作为原料进行加氢反应后产生,加氢残渣作为粘合剂的用量为5-20wt％。本申请通过采用原料加氢后产生的加氢残渣代替现有技术中的石油沥青,作为煤粉焦化工艺中的粘合剂,能够产生性能相当的焦炭,在此基础上,加氢残渣的成本远低于石油沥青,经济效益高,且有害致癌成分含量低。同时,本申请将加氢残渣用于制备焦炭,即实现了对加氢残渣的无害处理,由有效利用了加氢残渣中的高价值组分,是一种经济实惠的处理方法。(The application discloses a coke adhesive, and relates to the technical field of industrial adhesives. The coke adhesive is prepared from hydrogenation residues, wherein the hydrogenation residues are generated by taking one or more of heavy oil, residual oil and coal powder as raw materials and carrying out hydrogenation reaction, and the dosage of the hydrogenation residues as the adhesive is 5-20 wt%. According to the coal dust coking process, petroleum asphalt in the prior art is replaced by the hydrogenation residues generated after the raw materials are hydrogenated, and the coal dust coking process can generate coke with equivalent performance as an adhesive in the coal dust coking process. Meanwhile, the method uses the hydrogenation residues for preparing the coke, namely realizes the harmless treatment of the hydrogenation residues, effectively utilizes high-value components in the hydrogenation residues, and is an economical and practical treatment method.)

1. The coke binder is characterized by being prepared from hydrogenation residues, wherein the hydrogenation residues are generated after one or more of heavy oil, residual oil and coal powder are used as raw materials and subjected to hydrogenation reaction, and the hydrogenation residues are used as the binder and are used in an amount of 5-20 wt%.

2. A coke binder as claimed in claim 1 wherein the hydrogenation reaction is a liquid phase hydrogenation reaction.

3. The coke binder as claimed in claim 2, wherein the reaction temperature of the liquid phase hydrogenation reaction is 350-500 ℃ and the reaction pressure is 150-250 bar.

4. A coke binder as claimed in claim 1 wherein the raw materials are mixed with additives.

5. A coke binder as claimed in claim 4, wherein said additive comprises a porous carbonaceous material.

6. A coke binder as claimed in claim 4 wherein the internal surface area of the additive is 300 m/g.

7. A coke binder as claimed in claim 4 wherein the additive is added in an amount of 1 to 3 wt% of the feed.

8. A coke binder as claimed in claim 1 wherein the feedstock is mixed with a catalyst.

9. A coke binder as claimed in claim 1, wherein the sulphur content of the hydrogenation residue is less than 4%.

10. A coke binder as claimed in claim 1 wherein said hydrogenation residue is comprised of oil phase components and solid components, said oil phase components being present in an amount of 50 to 80 wt%.

11. A coke binder as claimed in claim 10 wherein said solid component comprises additives and/or catalysts.

12. The coke binder of claim 10 wherein the oil phase component comprises wax oil, gums, and asphaltenes.

Technical Field

The application relates to the technical field of industrial adhesives, in particular to a coke adhesive.

Background

Disclosure of Invention

The application aims to provide a coke adhesive, which solves the problem of treatment of hydrogenation residues, can replace the coke adhesive of which the raw material is petroleum asphalt, and reduces the production cost of coke.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions: a coke adhesive is prepared from hydrogenated dregs generated by hydrogenating one or more of heavy oil, residual oil and powdered coal, and the used amount of hydrogenated dregs as adhesive is 5-20 wt%.

In the technical scheme, the hydrogenation residue generated after the raw materials are hydrogenated is adopted to replace petroleum asphalt in the prior art and is used as a binding agent in the coal powder coking process, coke with equivalent performance can be generated, and on the basis, the cost of the hydrogenation residue is far lower than that of the petroleum asphalt, so that the economic benefit is high, and the content of harmful carcinogenic components is low. Meanwhile, the method uses the hydrogenation residues for preparing the coke, namely realizes the harmless treatment of the hydrogenation residues, effectively utilizes high-value components in the hydrogenation residues, and is an economical and practical treatment method.

Further, according to the embodiment of the present application, wherein the hydrogenation reaction is a liquid phase hydrogenation reaction.

Further, according to the embodiment of the present application, the reaction temperature of the liquid phase hydrogenation reaction is 350-.

Further, according to the examples of the present application, wherein the raw materials are mixed with additives.

Further in accordance with an embodiment of the present application, wherein the additive includes a porous carbonaceous material.

Further in accordance with an embodiment of the present application, wherein the additive has an internal surface area of 300 square meters per gram.

Further, according to the examples herein, wherein the additive is added in an amount of 1-3 wt% of the feedstock feed.

Further, according to the examples herein, wherein the feedstock is mixed with a catalyst.

Further, according to the embodiment of the application, the sulfur content of the hydrogenation residue is lower than 4%.

Further, according to the examples of the present application, wherein the hydrogenation residue is composed of an oil phase component and a solid component, the oil phase component accounts for 50-80 wt%.

Further, in accordance with an embodiment of the present application, wherein the solid component comprises an additive and/or a catalyst.

Further in accordance with embodiments herein, wherein the oil phase component includes wax oil, gum, and asphaltene.

Compared with the prior art, the method has the following beneficial effects: according to the coal dust coking process, the petroleum asphalt in the prior art is replaced by the hydrogenation residue generated after the raw materials are hydrogenated, and the coal dust coking process can generate coke with equivalent performance as an adhesive in the coal dust coking process. Meanwhile, the method uses the hydrogenation residues for preparing the coke, namely realizes the harmless treatment of the hydrogenation residues, effectively utilizes high-value components in the hydrogenation residues, and is an economical and practical treatment method.

Drawings

The present application is further described below with reference to the drawings and examples.

FIG. 1 is a flow diagram of a liquid phase hydrogenation process of the present application.

In the attached drawings

1. Blender 2, high-pressure pump 3, new hydrogen machine

4. Heating furnace I5, liquid phase hydrogenation reactor 6 and heat separator

7. Separator 8, stripping tower 9 and heating furnace II

10. Fractionating tower 11, membrane separator 12, and hydrogen circulation machine

13. Heating furnace III 14, decompression tower 15 and circulating hydrogen pipeline

16. Cold hydrogen pipe

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

The application discloses a coke adhesive, which is prepared from hydrogenation residues generated by hydrogenation of one or more raw materials of heavy oil, residual oil and coal powder, and the dosage of the coke adhesive is 5-20 wt%, preferably 5-15 wt%.

In the technical scheme, the hydrogenation residue generated after the raw materials are hydrogenated is adopted to replace petroleum asphalt in the prior art, and the hydrogenation residue is used as a binding agent in a coal powder coking process, so that coke with equivalent performance can be generated. Meanwhile, the method uses the hydrogenation residues for preparing the coke, namely realizes the harmless treatment of the hydrogenation residues, effectively utilizes high-value components in the hydrogenation residues, and is an economical and practical treatment method.

In this regard, the process flow for producing the hydrogenation residue is shown in FIG. 1. In fig. 1, heavy oil or residual oil as a raw material is mixed with additives in a mixer 1, pressurized by a high-pressure pump 2, and fed into a heating furnace 1 to be heated together with fresh hydrogen fed from a fresh hydrogen generator 3. The raw material hydrogenation mixture is heated to a preset reaction temperature and then is sent into a liquid phase hydrogenation reactor 5 from the bottom for reaction, the liquid phase hydrogenation reactor 5 consists of 2-4 reactors connected in series, and a reaction product leaves from the top of the liquid phase hydrogenation reactor 5. The exiting reaction products, consisting of three phases of gas, oil and solids, are separated in a hot separator 6, producing a top and a bottom material. The top material is processed by the separator 7, the stripping tower 8, the heating furnace II 9, the fractionating tower 10 and other equipment to produce products such as gasoline, diesel oil, wax oil and the like, and the bottom material is conveyed to the heating furnace III 13 to be heated and then conveyed to the decompression tower 14 to separate hydrogenation residues. The hydrogenation residue comprises a mixture of heavy oil or residue converted and additive solids.

Wherein the additive used comprises a porous carbonaceous material, in particular a coal-based material. It is characterized by a surface area as large as possible, typically several hundred square meters per gram, usually 300 square meters per gram, of its internal surface. The additive plays a role in adsorbing unconverted heavy oil and avoiding coking in the liquid-phase hydrogenation reaction. The additive typically comprises 1 to 3 wt% of the resid feed. The additive not only increases the stability of hydrogenation residues and improves the quality, but also can promote the formation of a coke framework in the coking process.

In addition, catalysts may be added to promote the hydrogenation reaction, such as iron oxide, iron sulfate, or molybdenum sulfide.

In addition, the reaction temperature in the liquid phase hydrogenation reactor is 350-500 ℃, and the reaction pressure is 150-250 bar. The specific reaction temperature and reaction pressure are determined by the feedstock oil to be reacted.

The hydrogenation residue thus produced also needs to take into account the following points:

first, the hydrogenation residue is preferably a residue having a low sulfur content. The amount of sulfur in the hydrogenation residue is determined by the S element in the hydrogenation raw material (i.e. heavy oil or residual oil): if the S element content in the raw material is high, the residual sulfur content in the hydrogenation residue is high; if the S element content in the feedstock is low, the sulfur content in the hydrogenation residue is low. Generally, the sulfur content in the hydrogenated residue as a binder is preferably controlled to 4% or less, and if it exceeds 4%, the quality of the coke is affected, and indexes such as hardness and density of the coke are slightly lowered.

Secondly, the hydrogenated residue of heavy oil or residual oil is preferably selected in the present application, rather than coal, because the coal powder causes the ash to be enriched in the residue, and the ash is inorganic and has adverse effects on the strength and heat value of the coke.

Finally, as a binder, the proportion of the oil phase component in the hydrogenation residue needs to be 50 to 80% by weight, and the remainder is the solid component. The solid component mainly comprises inorganic substances such as additives (such as activated carbon), catalysts (such as iron oxide) and the like, and if the hydrogenation raw material contains coal dust, the solid component also comprises unconverted coal (carbon conversion rate is 90%, and 10% of carbon is remained) and ash in the coal. The oil phase components mainly comprise three substances of wax oil, colloid and asphaltene, wherein the colloid and the asphaltene are mainly used as main components, and the mass ratio is as follows: 10-30 wt% of wax oil, 20-40 wt% of colloid, and asphaltene: 30-70 wt%.

The present application is further illustrated by the following examples 1-6, but the present application is not limited to these examples.

In examples 1 to 6, the hydrogenation residue produced by the liquefaction hydrogenation process having a conversion rate of 95% was used as a binder for coke production, and the physical properties of the hydrogenation raw material used in the liquefaction hydrogenation process are shown in Table 1.

TABLE 1

The above hydrogenation raw material was subjected to liquid phase hydrogenation, and the liquid phase hydrogenation reaction feed and the obtained hydrogenation residue in each example are shown in table 2.

TABLE 2