Automatic circulation line of full-intelligent catalyst electric heating roasting furnace

Abstract

The full-intelligent catalyst electric heating mesh belt roasting furnace automatic circulation line is high in intelligent degree, full-automatic operation is achieved, unattended operation is achieved, and parameters are set through one key. Loading and unloading are automatic, the feeding accuracy is + / -50 g, and the product quality is effectively improved. The labor intensity of workers is effectively reduced, and the product quality is stable. Manual feeding and discharging in a traditional process are changed into a full-automatic, full-sealed, negative-pressure vacuum, feeding and discharging mode. Therefore, accurate feeding is achieved, sealing performance is good, workshops are free of dust, and the environment-friendly and energy-saving requirements are met. Temperature control is accurate and uniform, electric heating response is fast, partition independent control is achieved, and product consistency is improved by 30% or above; the atmosphere is controllable, various catalyst process requirements are met, and the activity and the qualification rate are improved; energy conservation and consumption reduction are achieved, and energy consumption is reduced by 20%-40% through the full-fiber furnace lining and waste heat recovery; multiple interlocking protection is achieved, continuous operation is reliable, and the maintenance amount is low.

Description

Technical Field

[0001] This invention belongs to the technical field of heat treatment equipment for industrial catalytic materials, specifically relating to a fully intelligent, electrically heated, continuous mesh belt catalyst roasting furnace, which is particularly suitable for the fully automated production of denitrification catalysts, molecular sieves, and carrier catalysts, integrating drying, debinding, roasting, and activation. Background Technology

[0002] Traditional catalyst roasting furnaces generally suffer from the following defects: (Traditional process: no circulation line is designed, and loading and unloading are done manually) Traditional processes involve manual loading and unloading of materials, resulting in high labor intensity for workers. Poor loading and unloading precision, resulting in inconsistent quality.

[0003] Large temperature fluctuations and low temperature control precision during heating can easily cause catalyst cracking and uneven activity. The segmented manual adjustment has a low degree of automation, making it difficult to consistently guarantee batch consistency. The atmosphere, oxygen content, and wind speed inside the furnace cannot be controlled in a closed loop, which can easily lead to oxidation or insufficient sintering. It has high energy consumption, poor sealing, and simple exhaust gas treatment, which does not meet the requirements of environmental protection and energy conservation.

[0004] Existing technologies cannot meet the demands for large-scale, high-precision, intelligent, and continuous production of catalysts. Summary of the Invention

[0005] 3.1 Purpose of the Invention To overcome the shortcomings of existing technologies, a fully intelligent electric heating mesh belt roasting furnace is provided, which realizes automatic control of all parameters such as temperature, speed, atmosphere, air pressure and waste discharge, improves the uniformity of catalyst roasting, activity stability and production efficiency, and reduces energy consumption and labor costs.

[0006] The traditional manual loading and unloading process has been replaced with a fully automatic, fully sealed, negative pressure vacuum loading and unloading mode, thereby achieving precise feeding, good sealing, and a dust-free workshop that meets environmental protection and energy-saving requirements.

[0007] 3.2 Technical Solution A fully intelligent catalyst electric heating mesh belt roasting furnace includes: furnace body assembly, mesh belt conveying system, electric heating system, circulating air system, atmosphere control system, intelligent control system, sealing and exhaust gas treatment system, and automated loading and unloading system.

[0008] Furnace body: It adopts a modular segmented structure, consisting of feeding section, drying section, glue discharge section, calcination section, constant temperature section, slow cooling section, fast cooling section, and discharge section; the furnace lining adopts a full fiber high temperature refractory insulation layer, and the outer wall temperature rise is ≤45℃.

[0009] Mesh belt conveyor: Stainless steel mesh belt, frequency conversion speed regulation, speed continuously adjustable from 0.5 to 5 m / h; equipped with tensioning, correction, and anti-deviation mechanisms.

[0010] Electric heating system: Independent electric heating in each zone, with silicon carbide rod / resistance wire heating elements arranged on both the top and bottom sides; independent temperature control for each zone, with a temperature control range of room temperature to 650℃ and an accuracy of ±1℃.

[0011] Circulating air system: Each zone is equipped with an independent circulating fan and air distribution plate to achieve horizontal / vertical convection and temperature field uniformity of ±3℃.

[0012] Atmosphere control: Nitrogen / air multi-channel intake, online oxygen content monitoring, closed-loop control adjustable from 50ppm to 21%, suitable for inert / oxidative / micro-oxygen roasting.

[0013] Sealing system: kiln head and kiln tail labyrinth seal + nitrogen curtain seal to prevent air leakage and oxidation.

[0014] Intelligent control system: Industrial PLC + Touch screen + IoT cloud platform, achieving: Multi-zone temperature PID self-tuning control Automatic speed following and interlocking protection for conveyor belts Closed-loop regulation of oxygen content, wind pressure, and flow rate Automatic alarm and shutdown for over-temperature, belt breakage, overload, and over-pressure. Historical curves, data storage, remote monitoring, one-click start / stop Exhaust gas treatment: gas collection hood + flame arrester + heat exchanger + catalytic oxidation treatment to meet emission standards.

[0015] 3.3 Description of the attached figures: Figure 1 A fully intelligent catalyst electric heating calcination furnace automatic circulation line process layout diagram 3.4 Introduction to each workstation ◆High level of intelligence: Fully automatic operation, unattended, parameters can be set with one click.

[0016] ◆Automated loading and unloading: Feeding accuracy ±50g, effectively improving product quality.

[0017] ◆ Effectively reduces the labor intensity of staff and ensures stable product quality.

[0018] ◆ It changes the traditional manual loading and unloading process to a fully automatic, fully sealed, negative pressure vacuum loading and unloading mode.

[0019] ◆This achieves precise material feeding, good sealing, and a dust-free workshop, meeting environmental protection and energy-saving requirements.

[0020] ◆Precise and uniform temperature control: Electric heating responds quickly, with independent zone control, improving product consistency by more than 30%; ◆Controllable atmosphere: Adaptable to various catalyst process requirements, improving activity and yield; ◆Energy saving and consumption reduction: Full fiber furnace lining + waste heat recovery, energy consumption is reduced by 20% to 40%; ◆Safe and stable: Multiple interlock protections ensure reliable continuous operation and low maintenance.

Claims

1. To overcome the shortcomings of existing technologies, a fully intelligent electric heating mesh belt roasting furnace is provided, which realizes automatic control of all parameters such as temperature, speed, atmosphere, air pressure and waste discharge, improves the uniformity of catalyst roasting, activity stability and production efficiency, and reduces energy consumption and labor costs.

2. The traditional manual loading and unloading process has been replaced with a fully automatic, fully sealed, negative pressure vacuum loading and unloading mode; thereby achieving precise feeding, good sealing, and a dust-free workshop that meets environmental protection and energy-saving requirements.

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