Flue gas probe filtering device

Abstract

The utility model belongs to the technical field of standard gas probe filter elements. The utility model provides a flue gas probe filtering device. The flue gas probe filtering device comprises a heat manifold block and a transfer flange, a heating source is arranged in the hot manifold block and is used for heating the whole hot manifold block; the thermal integration block comprises a sampling gas circuit, a purging gas circuit, a calibration gas circuit, a sampling gas circuit and a filter element, and the filter element 105 is arranged in the middle of the hot manifold block 1. The device disclosed by the utility model can ensure that the standard gas is heated to a proper temperature, is more convenient to control, and ensures that the standard gas passes through the tail end of the sampling probe to be consistent with a sample gas passing path (including a filter element).

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gas standard probe filter element. BACKGROUND

[0002] Full-flow gas standard must pass through the probe filter element, and the existing probe calibration does not pass through the probe filter element. Compared with the ordinary sampling probe, the full-flow calibration sampling probe has faster T90 response time, is more stable in full-flow calibration, and can reduce the zero point and range drift of the full system in the same period. The full-flow calibration probe is designed according to the requirements of "Technical Specifications for Continuous Monitoring of Flue Gas (SO2, NOX, Particulate Matter) Emission from Fixed Pollution Sources" HJ75-2017, fully meets the environmental protection requirements, and when the whole calibration is performed, the path (including sampling pipeline, filter, scrubber, regulator, analyzer, etc.) through which the standard gas and sample gas pass at the end of the sampling probe is consistent, and the detection of zero point and range drift, value error and system response time is performed. SUMMARY

[0003] Therefore, the utility model provides a flue gas probe filter device, including heat integration block and transfer flange, the inside of heat integration block is equipped with heating source for heating whole heat integration block, heat integration block includes: sampling gas circuit, purging gas circuit, calibration gas circuit, sampling gas circuit, filter element, filter element 105 sets in heat integration block 1 middle part, filter element top is provided with purging gas circuit, filter element below is provided with calibration gas circuit, filter element front is provided with sampling gas circuit, filter element left side is provided with sampling gas circuit, the entrance of sampling gas circuit 101 is adapted to the hollow position of transfer flange 2, the outlet of sampling gas circuit 101 is adjacent to filter element front, the entrance of purging gas circuit 102 is provided with purging port 1021, the outlet of purging gas circuit 102 is adjacent to filter element top, the entrance of calibration gas circuit 103 is provided with calibration port 1031, the outlet of calibration gas circuit 103 is adjacent to filter element below, the outlet of sampling gas circuit 104 is provided with sampling port 1041, the entrance of sampling gas circuit 104 is adjacent to filter element left side, transfer flange 2 is hollow structure, transfer flange 2 and heat integration block 1 fixed connection, the hollow position of transfer flange 2 is adapted to the entrance of sampling gas circuit 101.

[0004] Further, the inlet of the sampling gas circuit 101 is further provided with a pneumatic valve. BRIEF DESCRIPTION OF DRAWINGS

[0005] Figure 1 It is the flue gas probe filter device diagram.

[0006] Figure 2 It is the flue gas probe filter device calibration gas circuit diagram.

[0007] Figure 3 It is the flue gas probe filter device calibration gas circuit diagram. DETAILED DESCRIPTION

[0008] EMBODIMENT

[0009] As Figure 1 shown, the utility model provides a flue gas probe filter device, including heat integration block 1 and transfer flange 2.

[0010] Heating source is equipped in the heat integration block 1, is used for heating the whole heat integration block, including: sampling gas path 101, purging gas path 102, calibration gas path 103, sampling gas path 104, filter core 105.

[0011] As Figure 2 shown, the filter core 105 is arranged in the middle part of heat integration block 1, the purging gas path is arranged above the filter core, the calibration gas path is arranged below the filter core, the sampling gas path is arranged in front of the filter core, the sampling gas path is arranged on the left side of the filter core, the inlet of sampling gas path 101 is adapted to the hollow position of transfer flange 2, the outlet of sampling gas path 101 is adjacent to the front of filter core, the inlet of purging gas path 102 is provided with purging port 1021, the outlet of purging gas path 102 is adjacent to the top of filter core, the inlet of calibration gas path 103 is provided with calibration port 1031, the outlet of calibration gas path 103 is adjacent to the bottom of filter core, the outlet of sampling gas path 104 is provided with sampling port 1041, and the inlet of sampling gas path 104 is adjacent to the left side of filter core.

[0012] The inlet of sampling gas path 101 is further provided with a pneumatic valve.

[0013] The transfer flange 2 is a hollow structure, the transfer flange 2 is fixedly connected with heat integration block 1, and the hollow position of transfer flange 2 is adapted to the inlet of sampling gas path 101.

[0014] When collecting sample gas, the sampling probe rod is connected to the other end of transfer flange 2, the flue gas collected by the sampling probe rod enters heat integration block 1 through transfer flange 2, sampling gas path 101 and filter core 105, heating sources are arranged in transfer flange 2 and heat integration block 1 to ensure the temperature of sample gas, when sampling (when the sampling probe rod collects flue gas), sample gas passes through the sampling gas path of heat integration block, passes through the filter core, reaches the sampling port through the sampling gas path, and finally enters the heat tracing pipe and enters the gas analysis system through the sampling port.

[0015] When calibrating, the purging port is closed, the pneumatic valve 106 is closed, the calibration gas passes through the calibration port, the calibration gas path, the filter core, reaches the sampling port through the sampling gas path, and finally enters the heat tracing pipe and enters the gas analysis system through the sampling port.

[0016] When purging, the calibration port and the sampling port are closed, the pneumatic valve is opened, clean compressed air passes through the purge port, the purge gas path, blows off floating dust attached to the outer surface of the filter core 4, and blows it back into the flue through the sampling gas path.

[0017] The sampling gas path, as shown in Figure 1 The arrow indicates the direction of the gas flow, the sample gas enters the transfer flange from the flue through the sampling probe, then enters the heat integration block through the transfer flange, then passes through the filter core, and finally enters the gas analysis system through the sampling port.

[0018] The calibration gas path, as shown in Figure 3 The arrow indicates the direction of the gas flow, the calibration gas enters from the calibration port and the calibration gas path, then passes through the filter core, and finally enters the gas analysis system through the sampling gas path and the sampling port.

[0019] The device can ensure that the calibration gas is heated to the appropriate temperature, the control is more convenient, and the path through which the calibration gas and the sample gas pass through the end of the sampling probe (including the filter core) is consistent.

Claims

1. A flue gas probe filter apparatus, characterised in that, The heat integration block and the transfer flange are included; The heat integration block is internally provided with a heating source for heating the whole heat integration block; The heat integration block includes a sampling gas path, a purging gas path, a calibration gas path, a sampling gas path and a filter core; The filter core is arranged in the middle of the heat integration block; a purging gas path is arranged above the filter core; a calibration gas path is arranged below the filter core; a sampling gas path is arranged in front of the filter core; a sampling gas path is arranged on the left side of the filter core; the inlet of the sampling gas path is adapted to the hollow position of the transfer flange; the outlet of the sampling gas path is adjacent to the front of the filter core; the inlet of the purging gas path is provided with a purging port; the outlet of the purging gas path is adjacent to the top of the filter core; the inlet of the calibration gas path is provided with a calibration port; the outlet of the calibration gas path is adjacent to the bottom of the filter core; the outlet of the sampling gas path is provided with a sampling port; the inlet of the sampling gas path is adjacent to the left side of the filter core; The transfer flange is a hollow structure; the transfer flange is fixedly connected with the heat integration block; the hollow position of the transfer flange is adapted to the inlet of the sampling gas path.

2. The flue gas probe filter apparatus of claim 1, wherein, The inlet of the sampling gas path is further provided with a pneumatic valve.

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