CN2690375Y

CN2690375Y - Device for producing titanium tetrachloride

Info

Publication number: CN2690375Y
Application number: CN 200420025201
Authority: CN
Inventors: 洪若瑜; 钱建中; 李洪钟
Original assignee: Institute of Process Engineering of CAS; Suzhou University
Current assignee: Institute of Process Engineering of CAS; Suzhou University
Priority date: 2004-03-04
Filing date: 2004-03-04
Publication date: 2005-04-06
Anticipated expiration: 2014-03-04

Abstract

The utility model discloses a device for producing titanium tetrachloride. The utility model is characterized in that the utility model comprises a first spouted fluidized bed and a second spouted fluidized bed, wherein the upper part of the first spouted fluidized bed is provided with a solid material inlet; the lower part of the second spouted fluidized bed is provided with a waste slag outlet; the first spouted fluidized bed and the second spouted fluidized bed are communicated by a down pipe, and a chlorine inlet and a chlorine containing inlet are arranged at the bottoms of the two spouted fluidized beds respectively. Because the utility model adopts the structures of two sections of the spouted fluidized beds, the utility model has the advantages of high yield, sufficient reaction, and small corrosion and abrasion; in addition, the blocking phenomenon of magnesium chloride and calcium chloride can not be generated easily.

Description

A kind of producing apparatus of titanium tetrachloride

Technical field

The utility model relates to a kind of producing apparatus of titanium tetrachloride, is specifically related to a kind ofly prepare the employed equipment of titanium tetrachloride with the chlorination conversion method.

Background technology

Titanium white (titanium dioxide) is most important white pigment, has purposes widely in industries such as coating, printing ink, rubber, papermaking, chemical fibre and art paintings.The titanium ore resource reserves of China occupy the first place in the world, only 10,000,000,000 tons of vanadium titano-magnetites are just contained in area, Flos Bombacis Malabarici one Xichang, amount to titanium dioxide account for the world proven reserve 35%, annual new 3,000,000 tons of the schreyerite slags that produce have been accumulated 50,000,000 tons in slag so far.

The production technique of titanium dioxide has two kinds of sulfuric acid process and chlorination processs.Sulfuric acid process can be used the lower mineral of grade, facility investment is less, and through the effort of two more than ten years, the sulfuric acid process of China prepares the existing certain scale of titanium white, but because preparation method's limitation, there is long flow path, raw materials consumption is many, three wastes discharge amount is big, quality product is relatively poor.

Chlorination process is a kind of emerging preparation method, and it at first utilizes titanium ore and chlorine at high temperature to react, and obtains titanium tetrachloride, with oxidation style titanium tetrachloride is made titanium white again.Chlorination process have flow process short, pollute little, as to prepare rutile-type titanium white, but with high content of technology, very high to the requirement of ore, prior art can't utilize the schreyerite slag to prepare titanium tetrachloride, causes scoriaceous accumulation thus, not only contaminate environment but also waste resource.

China has carried out many work in the titanium white preparation field, and applied for a large amount of patents, but these patents all concentrate on fields such as the oxidation of titanium tetrachloride and the many-sided utilization of reactor, titanium white aftertreatment and titanium white thereof, about the work of the utilization of resources of titanium ore and schreyerite slag and patent seldom.Transform the field in the titanium ore chlorination, employing is arranged: the method for (1) fused salt chlorimation, in order to handle calcium, titanium ore that Mg content is high, its shortcoming is that temperature of reaction is low, chemical reaction rate is little, and equipment capacity is low, reactor volume is huge, equipment is difficult to maximize, produce problems such as poor continuously, useless quantity discharged is big; (2) fluidizing chlorination method, utilize the principle of particle suspension, the transmittance process between reinforcement gas one is consolidated has higher speed of reaction, can strengthen production, its shortcoming is to adopt comparatively high temps, generally only handle rich titanium ore, when foreign matter content is higher in the ore, produces a large amount of fused calcium chloride, magnesium chloride occluding device and influence normal running, yield is not high enough simultaneously, particularly when adopting higher gas speed to be in quick chlorination, equipment corrosion and serious wear, fine particle entrainment problem are difficult to solve.

Summary of the invention

The utility model purpose provides a kind of producing apparatus of titanium tetrachloride, and can adopt higher ore of foreign matter content or slag is raw material, and has higher yield.

For achieving the above object, the technical solution adopted in the utility model is: a kind of producing apparatus of titanium tetrachloride, comprise first spouted fluidized bed, second spouted fluidized bed, the described first spouted fluidized bed top is provided with the titanium ore inlet, the second spouted fluidized bed bottom is provided with slag outlet, be communicated with by down pipe between first spouted fluidized bed and second spouted fluidized bed, two spouted fluidized bed bottoms are respectively equipped with the chlorine inlet.

In the technique scheme, described " spouted fluidized bed " is generally used for corn drying, pulverized coal friring and gasification etc. at present, has bigger jet bore, and the while can also be adopted many fluidicss and is convenient to the industry amplification.

In the technique scheme, can be provided with the muriate isolating construction in described first spouted fluidized bed bottom, described muriate isolating construction comprises muriate collection post and outlet.

In the technique scheme, have chlorine jet pipe and low speed chlorine inlet in the described chlorine inlet.

In the technique scheme, can be provided with valve on described solid material inlet, down pipe is provided with valve, and the waste residue outlet is provided with valve.

In the technique scheme, the described first spouted fluidized bed top is provided with the outlet of the first spouted fluidized bed upper gas, described first spouted fluidized bed upper gas outlet is communicated with the chlorine-containing gas inlet of second spouted fluidized bed through pipeline, on the pipeline air pump can be set, the described second spouted fluidized bed top is provided with the outlet of the second spouted fluidized bed upper gas.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1. because the utility model has adopted the structure of two sections spouted fluidized beds, react under the comparatively high temps of first spouted fluidized bed earlier, so that higher speed of reaction to be provided, further reaction under the lesser temps of second spouted fluidized bed again can improve yield;

2. because the utility model adopts spouted fluidized bed, solid detention time is long, the bed superficial gas velocity is lower, can use bigger granule materials, gas-solid reaction is more abundant, and equipment corrosion and wearing and tearing are little, the jet bore is bigger, be not easy to stop up, and the first spouted fluidized bed bottom is provided with the tripping device of calcium chloride and magnesium chloride etc. specially the problem of fusion bonding such as the calcium chloride of having avoided taking place in the prior art, magnesium chloride;

3. the utlity model has simple in structure, easy to implement, the advantage of can reduce production costs, boosting productivity.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment one;

Accompanying drawing 2 is the enlarged diagram of the first spouted fluidized bed bottom construction among the embodiment one.

Wherein: [1], first spouted fluidized bed; [2], second spouted fluidized bed; [3], valve; [4], valve; [5], valve; [6], solid material inlet; [7], down pipe; [8], waste residue outlet; [9], chlorine inlet; [10], chlorine-containing gas inlet; [11], first spouted fluidized bed upper gas outlet; [12], second spouted fluidized bed upper gas outlet; [13], first spouted fluidized bed bottom; [14], low speed chlorine inlet; [15], muriate is collected post; [16], chlorine jet pipe; [17], outlet; [18], pipeline.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: shown in accompanying drawing 1, a kind of producing apparatus of titanium tetrachloride comprises that all there are heating unit and lagging material in the outside of first spouted fluidized bed 1,2, two fluidized-beds of second spouted fluidized bed.Described first spouted fluidized bed 1 top is provided with solid material inlet 6, second spouted fluidized bed, 2 bottoms are provided with waste residue outlet 8, be communicated with by down pipe 7 between first spouted fluidized bed 1 and second spouted fluidized bed 2, two spouted fluidized bed bottoms are respectively equipped with chlorine inlet 9, chlorine-containing gas inlet 10, solid material inlet 6 is provided with valve 3, down pipe 7 is provided with valve 4, waste residue outlet 8 is provided with valve 5, first spouted fluidized bed bottom 13 has liquid muriate and separates and discharge outlet, as shown in Figure 2, constitute by muriate collection post 15 and outlet 17, include chlorine jet pipe 16 and low speed chlorine inlet 14 in the described chlorine inlet 9, the outlet 11 of the first spouted fluidized bed upper gas is communicated with the chlorine-containing gas inlet 10 of second spouted fluidized bed 2 through pipeline 18, on the pipeline 18 air pump can be set, second spouted fluidized bed, 2 tops are provided with second spouted fluidized bed upper gas outlet 12.

Titanium ore or titanium slag are pulverized, and mix with carbonaceous material such as coke breeze or wooden carbon powder etc., feed first spouted fluidized bed 1 from solid material inlet 6, feed excessive chlorine from chlorine inlet 9, reacted solid materials feeds in second spouted fluidized bed 2 through down pipe 7, the gas that contains chlorine and titanium tetrachloride is fed by chlorine-containing gas inlet 10 through pipeline 18 from the outlet 11 of the first spouted fluidized bed upper gas, the gas that contains titanium tetrachloride that obtains after the chlorination is drawn from second spouted fluidized bed upper gas outlet 12, and last waste residue is discharged from slag-drip opening 8.

Wherein, the liquid calcium chloride and the magnesium chloride that in first spouted fluidized bed 1, generate, the inflow muriate is collected post 15, is separated through outlet 17, reduces the situation that takes place to stop up and take place in synthetic and aftertreatment.

Claims

1. the producing apparatus of a titanium tetrachloride, it is characterized in that: comprise first spouted fluidized bed [1], second spouted fluidized bed [2], described first spouted fluidized bed [1] top is provided with solid material inlet [6], second spouted fluidized bed [2] bottom is provided with waste residue outlet [8], be communicated with by down pipe [7] between first spouted fluidized bed [1] and second spouted fluidized bed [2], two spouted fluidized bed bottoms are respectively equipped with chlorine inlet [9] and chlorine-containing gas inlet [10].

2. according to the producing apparatus of the described a kind of titanium tetrachloride of claim 1, it is characterized in that: described first spouted fluidized bed [1] bottom is provided with the muriate isolating construction, and described muriate isolating construction comprises muriate collection post [15] and outlet [17].

3. according to the producing apparatus of the described a kind of titanium tetrachloride of claim 1, it is characterized in that: have chlorine jet pipe [16] and low speed chlorine inlet [14] in the described chlorine inlet [9].

4. according to the producing apparatus of the described a kind of titanium tetrachloride of claim 1, it is characterized in that: described solid material inlet [6] is provided with valve [3], and down pipe [7] is provided with valve [4], and waste residue outlet [8] is provided with valve [5].

5. according to the producing apparatus of the described a kind of titanium tetrachloride of claim 1, it is characterized in that: described first spouted fluidized bed [1] top is provided with pneumatic outlet [11], it is communicated with the chlorine-containing gas inlet [10] of second spouted fluidized bed [2] through pipeline [18], pipeline [18] is provided with air pump, and described second spouted fluidized bed [2] top is provided with pneumatic outlet [12].