Technical plan of high gravity reaction equipment for an aluminum industry

 

Technical background of project equipment

XXX aluminum through the network to find the company, to choose the company's high gravity reactor for sodium aluminate carbonation reaction, the company's high gravity reaction has done similar gas-liquid reaction, then the company organized relevant technical personnel to carry out preliminary design.

According to the needs of process optimization and in line with the principle of ensuring product quality, after careful study, XXX Aluminum decided to change the carbon separation reactor in the original configuration scheme:

1. The continuous three-stage kettle type carbon separation reaction system is no longer used.

2. The high gravity reactor is selected as the carbon fraction reactor.

3. Technical conditions of high gravity reactor:

(1) Reaction type: carbonation reaction.

(2) material to be treated: sodium aluminate solution.

(3) Reactant: carbon dioxide gas with a concentration of 50-99%.

(4) throughput: 35m ³/d.

(5) chemical composition of the treated material: pH value> 14, caustic ratio 1.5-1.8,Al2O3 concentration 100-120g/L.

(6) Treatment cycle: 5 cycles of daily treatment, each cycle reaction time 4h. Capacity per cycle: 7m ³.

(7) Reaction temperature: 20-25°C.

(8) Equipment material: 304 stainless steel.

 

Technical brief description of high gravity carbonation reaction equipment

    Sodium aluminate in the stirred reaction tank is metered to the premixed reaction device at constant pressure by the circulating pump, while carbon dioxide gas also enters the distributor of the premixed reaction device through the flowmeter for primary mixing reaction with sodium aluminate, and then isSuperThe mixing device of the gravity reactor is drawn into the reaction chamber. Sodium aluminate, carbon dioxide gas in the reactor to withstand the high-speed relative movement of the stator 3000r/min quickly get mixed homogeneous reaction. Because the small particles such as gas-ladle liquid and liquid-ladle gas formed in the reaction process are also rapidly torn, oscillated and broken under the action of high-speed and high-frequency mechanical force of the super-gravity reactor, the reaction time is shortened and the reaction efficiency is strengthened. Finally sodium aluminate with a small amount of carbon dioxide gas fromAfter the high gravity reactor comes out, it is mixed and absorbed again through the condensation reactor and then enters the bottom of the reaction tank through the circulation pipe. This high-tech high-gravity reaction device can make the sodium aluminate and carbon dioxide gas absorb faster during the reaction, the particle size after the reaction is smaller, and the reaction time is shorter.

   reaction conditions , 99% carbon dioxide gas, low temperature circulating water should meet the reaction temperature, circulating pump andThe high-gravity reactor will generate a part of heat due to mechanical movement during the reaction process, and the heat generated will not exceed the power consumption of the motor.

Reactant index, sodium aluminate reaction liquid is added with additives to make the original particle size of the product 50 nm, polymerize in the reaction system, the final particle size is related to the reaction environment, the reaction product is broken by the super gravity reactor to form small particle size particles.

Brief Description of Equipment Self-control Interlock

1, the reaction tank temperature and circulating water temperature control valve interlock

2. The discharge pressure of the circulating pump is interlocked with the frequency conversion motor of the circulating pump

3, sodium aluminate flowmeter and sodium aluminate regulating valve interlock

4, carbon dioxide flow meter and carbon dioxide regulating valve interlock

5. The transfer cut-off valve is interlocked with the sodium aluminate cut-off valve, the transfer cut-off valve is opened, and the sodium aluminate cut-off valve is closed. The transfer cut-off valve is closed, and the sodium aluminate cut-off valve is opened.

Equipment Technical Documents

Equipment Name: Complete set of high gravity reaction equipment

Equipment model: FLK-7/CZL

Material: material contact part is 304

1.Stirred reaction kettle

1.1、Reaction kettleOne, nominal volume: 7000L, actual volume: 7900L, diameter: 2000mm, upper and lower elliptical heads, wall thickness 10mm, total height ~ 2900mm, upper head matching: 450mm manhole 1, feed pipe DN80, feed port DN100, thermowell 1, lower outlet DN50, flange standard GH20592-2009, material: 304, raw material origin: Taigang, whole machine origin: Nantong fleck.

1.2、Jacket diameter2200mm, wall thickness 8mm, with lower elliptical head, material: 304, raw material origin: Taigang, jacket: 1 pressure gauge, 1 automatic temperature control valve, material: 304, origin: Zhejiang, complete machine origin: Nantong Fulek.

1.3、Paddle mixer: spindle isΦ 108 × 8 seamless stainless steel pipe, 3 blades, blade diameter 900mm, material: 304, southern Anhui motor YE3-15kw-4P-B5, reducer model: FAF87-NA111-Y15kw-4P, origin: Jiangyin Guokang, complete machine origin: Nantong Fulike

2.Circulating pump

2.1. Circulating pump, model XHB-40, flow rate: 15m ³/h, pump head material: 304, import DN50, export DN40, bearing seat material: HT250, bearing model: NSK6309ZZC3E,3, carbon steel weldments at base, motor: Wannan variable frequency motor YE3-11kw-2P-B3, flange standard GH20592-2009, whole machine origin: Nantong flake

3. self-regulating ball valve

3.1. Liquid regulating valve, DN40, regulating flow rate: 5~20 m/h, gas regulating valve DN25, regulating flow rate: 5~35 m/h,Material:304 (solenoid valve brand: ASCO 8551 series with stainless steel junction box, echo proximity switch using electronic), product: Shanghai

4. flow meter

4.1. Liquid flowmeter DN40, measuring range: 5~30 m/h, gas flowmeter DN25, measuring range: 5~40 m/h,Material:304 (solenoid valve brand: ASCO 8551 series with stainless steel junction box, echo proximity switch using electronic), origin: Anhui Tiankang

5. temperature control valve

5.1, temperature control range20-25 ℃, material: 304, flange connection, import and export DN32, flange standard GH20592-2009, origin: Zhejiang.

6. temperature sensor

6.1, temperature sensor, the length in the kettle is 2000mm, temperature transmitter, output signal: 4-20mA, 0-10mA, material: 304,Origin: Anhui Tiankang

7.Supergravity reactor

7.1、SuperGravity Reactor, Model:FSB-40 flow rate: 15m ³/h, pump head material: 304, import DN50, export DN40, bearing seat material: HT250, bearing model: NSK6309ZZC3E,3, carbon steel weldment at base, motor: Wannan variable frequency motor YE3-15kw-2P-B3, flange standard GH20592-2009, origin: Nantong flake.

8. condensing reactor

8.1. The condensing reactor is made of 304 material, with a diameter of DN50, an outer diameter of φ89, a total length of 1500mm, and a cooling water pipe of DN32. The origin is Nantong Flake.

9. gas-liquid distributor

9.1. The gas-liquid distributor is made of 304 material, with a diameter of DN65 and a total length of 500mm. The origin is Nantong Flake.

10. pressure gauge, manual valve, skid-mounted floor seat, pipeline, etc.

10.1, pressure gauge, manual valve, skid-mounted seat, pipeline, etc. Origin: Nantong Flake.

XI,PLC control cabinet

11.1、SiemensPLC control, Weichuang frequency converter, with output reactor. Main electrical components: ABB, grounding system adopts TN-S system. The PLC electric control cabinet is installed on the skid-mounted base.

11.2、The electrical power distribution and PLC system in the control cabinet are required to be arranged before and after, and strong and weak electricity are separated (Or 2 control cabinets), to avoid interference; PLC controller requires Siemens PLC with modbus485 bus interface, power modules, terminals and relays adopt Weidmuller or Phoenix brand, and indicator lights, switches and buttons adopt imported products;

11.3PLC control cabinet is required to have good heat dissipation function and cannot be arranged together with high heat dissipation and frequency converter (high frequency interference) equipment;

XII. Random Accessories

12.1. Circulating pump, 1 set of mechanical seal, model XHB-40/NY;

12.2, superGravity reactor, 1 set of mechanical seal, model XHB-40/NY;

12.3. One set of circulating pump and one set of O-ring for high gravity reactor;

12.4, random wrench 1 piece

XIII. Attached Drawings

Attached Figure 1:

 

 

Attached Figure II: