A method for evaluating the performance of powder coke adsorption of sulfur dioxide/hcl based on entrained flow

An evaluation method, the technology of entrained flow bed, which is applied in the direction of using material absorption and weighing, can solve the problems of inappropriate powder activated coke, inability to simulate the adsorption state of powder activated coke, and inability to measure the intrinsic adsorption rate of activated coke. accurate effect

Active Publication Date: 2020-05-08
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This evaluation method, on the one hand, cannot rule out the influence of external diffusion, so that some parameters required for the design of industrial-grade adsorption reactors such as the intrinsic adsorption rate of activated coke cannot be measured; on the other hand, the flow field in the fixed bed and the desulfurization The flow fields in industrial adsorption devices (entrained bed) such as towers are not the same, so the use of fixed bed adsorbers cannot simulate the effect of powdered activated coke on SO in industrial applications. 2 The true adsorption state of / HCl
Therefore, for granular activated coke on SO 2 The traditional evaluation method of / HCl adsorption performance is not suitable for powdered activated coke, it is necessary to invent a method for the adsorption of SO 2 / HCl performance evaluation system

Method used

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  • A method for evaluating the performance of powder coke adsorption of sulfur dioxide/hcl based on entrained flow
  • A method for evaluating the performance of powder coke adsorption of sulfur dioxide/hcl based on entrained flow
  • A method for evaluating the performance of powder coke adsorption of sulfur dioxide/hcl based on entrained flow

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] systems such as Figure 1~4 As shown, it includes adsorption gas generating device, coke powder feeding device, temperature control and heat preservation device, serpentine tube adsorption reactor, gas-solid separation device and tail gas treatment device.

[0064] The adsorption gas generating device includes gas cylinders (high-purity nitrogen cylinder 1, high-purity oxygen cylinder 2, SO 2 Standard gas cylinder 3), mass flow controller 4 and steam generator 5, and adopt peristaltic pump 6 to absorb water from water tank 7 to provide ultrapure water 8 with stable flow for steam generator 5.

[0065] The steam generating device 5 is a cylindrical metal shell, which is heated by an electric heating wire, and an appropriate amount of heat storage ceramics is installed inside, and the water droplets sent by the peristaltic pump 6 evaporate instantly to water vapor.

[0066] The main body of the coke powder feeding device is a screw feeder 9, which is used to send powder...

Embodiment 2

[0071] combine Figure 1~4 , a powder coke adsorbing SO 2 The performance evaluation method includes the following steps:

[0072] 1. Preparation part:

[0073] (1) Sieve the powdered active coke to be tested to obtain powdered coke particles with different particle sizes (50-200 μm);

[0074] (2) Pour powder coke with an average particle size of 75 μm (the powder coke that can pass through a 160-mesh sieve but cannot pass through a 250-mesh sieve has a particle size distribution of 58 to 96 μm, and its average particle size is 75 μm) into the screw feeder The feed bin 12 of the feeder 9 is turned on the feeder motor, and the feeding amount is calibrated (10g / h);

[0075] (3) Turn on the power supply of the steam generating device 5 and the gas heater 13, and after the temperature reaches the set value, turn on the peristaltic pump 6 to set the water supply and open each gas cylinder 1-3 to prepare the simulated flue gas: The concentration of each component in the simulate...

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Abstract

The ivnention discloses a method for evaluating the sulfur dioxide / HCl adsorption performance of powdery coke based on an entrained flow bed. The method comprises the following steps: providing an S-shaped tubular adsorption reactor, wherein the tubular adsorption reactor is formed by a plurality of vertical pipes, a plurality of elbows and an S-shaped single-pass pipeline formed by a plurality ofT-shaped three-way valve, an inlet of the S-shaped single-pass pipeline is formed by an adsorbate gas inlet and a powdery active coke feeding inlet, each T-shaped three-way valve and an outlet of a reactor respectively correspond to one sampling opening, and the sampling openings are connected with a gas-solid separation device; pumping a to-be-detected gas containing SO2 / HCl to the adsorbate gasinlet, simultaneously pumping powdery active coke into the powdery active coke feeding inlet, respectively obtaining obtained samples and the time for obtaining the samples, detecting the SO2 / HCl adsorption quality of different sampling openings, and obtaining the SO2 / HCl adsorption speed of the powdery coke of a zone between two sampling openings according to the SO2 / HCl adsorption quality different value of the obtained samples of the two sampling openings and the time different value of the obtained samples of the two sampling openings.

Description

technical field [0001] The invention belongs to the field of environmental protection, in particular, it is a method for evaluating the desulfurization or dehydrochlorination performance of powdered activated coke in the state of air entrainment. Background technique [0002] Activated coke / carbon is a carbonaceous adsorption material with rich pore structure and huge specific surface area. It has the characteristics of strong adsorption capacity, good chemical stability, high mechanical strength, and convenient regeneration. The active coke used in industry is granular active coke with a diameter of 5-9 mm. Its manufacturing process is complex, expensive, and mechanical loss is large, which limits the popularization and application of active coke. The technology proposed by the applicant of the present invention in the publication number CN103224235A "A Process and Device for Quickly Preparing Powdered Activated Coke for Desulfurization Using Pulverized Coal" can use in-sit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/02
CPCG01N5/02
Inventor 马春元刘志王涛张立强赵希强程星星
Owner SHANDONG UNIV
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