The SCR denitration catalyst detection test bench is a device designed and developed to meet the wear strength detection of SCR denitration catalysts. The main target customers of this device are thermal power plants, enabling customers to conveniently and accurately detect the wear resistance performance of catalyst modules, and providing accurate experimental data for the design, production, and use of catalysts in flue gas denitrification.

Process Introduction

This test bench is designed as a horizontal structure, and the main structure of the detection device is a horizontally placed air duct. A vortex air pump is installed at the front end of the air duct to provide power, and air is blown into the pipeline from the inlet by the vortex air pump. There are two rectangular sample compartments arranged in front and back on the pipeline for placing test catalyst samples. There is a feeding port for abrasive (quartz sand particles) between two sample chambers. The abrasive is injected into a horizontally placed air duct at a constant rate through the feeding port and carried downstream by the airflow generated by the vortex air pump. The airflow with abrasive passes through the pores in the middle of the catalyst module in the downstream test sample chamber to polish the catalyst module. The catalyst powder under wear is carried away by the airflow, so the reduced mass of the test sample can indirectly reflect its wear resistance. There is a set of abrasive separation system connected at the end of the pipeline, and the separated abrasive falls into the bottom hopper, while the airflow is discharged through the exhaust outlet.

The horizontally set air duct is equipped with vortex flowmeter, pressure transmitter, anemometer and other detection instruments to monitor and adjust the wind speed inside the pipeline, so as to maintain a suitable and stable state of wind speed inside the pipeline in the test bench.

The wear agent feeding mechanism consists of a wear agent storage hopper, valves, feeding hopper, spiral feeder, etc. The spiral feeder is driven by a variable frequency motor and can freely adjust the speed, thereby freely controlling the speed of the wear agent entering the pipeline.

Before the experiment begins, add an appropriate amount of screened abrasive to the feeding hopper, compare the same catalyst samples in the sample chamber and the test sample chamber, turn on the fan, observe the flow meter, pressure transmitter, and anemometer, adjust the fan frequency and air volume adjustment mechanism to achieve the required stable values of air volume and air speed in the pipeline, adjust the abrasive feeding screw to the appropriate speed and start it, so that the abrasive is evenly added to the pipeline. The control system starts timing. When the set time is reached, the control system automatically stops the feeding work of the screw feeder, and the fan stops after a certain delay. The operator turns on the pulse dust removal device, cleans all the abrasive adhered in the dust collector into the abrasive collection box, takes it out and weighs it. Take out the comparison sample and the test sample from the sample warehouse, and weigh them separately. The concentration of the abrasive in the gas passing through the test sample can be calculated based on the weight of the abrasive. By comparing the weight difference between the test sample and the control sample, the degree of wear of the catalyst block can be calculated, thereby determining the wear strength of the catalyst.

Phone:13776249631

Email:cai-yz@163.com

QQ:759080241