CN201094885Y - High concentration bag-type dust remover - Google Patents

Abstract

The utility model relates to a bag-typed dust-removing device that is used for removing the high density of the smoke-dust in the smoke gas, which consists of a smoke-gas inlet 1, a shell 8, a filtering bag 4, an upper box body 6, a pulse spraying-blowing device 5, an ash hopper 9, an ash-removing valve 10 and a smoke-gas outlet 7, wherein, a separation plate 2 is vertically arranged inside the shell 8 and close to the smoke-gas inlet 1, and a gas-stream distributor 3 is arranged at the back of the separation plate 2 in parallelism. The utility model adopts the mechanical dust-removing technology and bag-typed dust-removing composite technology, which improves the dust-removing efficiency; at the same time, the operation of the bag-typed dust-removing device is stable with the dust-removing efficiency amounting up to 99 percent.

Description

High concentration bag filter

technical field

The utility model relates to a bag type dust remover, in particular to a bag type dust remover used for removing high dust concentration in flue gas.

Background technique

With the improvement of people's awareness of dust pollution, the emission standards will become more and more stringent. Some places require that the dust content in the treated flue gas must be lower than 50mg/m ³ , which puts forward higher requirements for dust removal devices.

At present, there is still a lack of suitable treatment technology and devices for the treatment of high-concentration dust. Traditional dust removal devices usually have common problems such as complex systems, large footprints, and high operating costs, especially for the low collection efficiency of fine dust.

The bag filter is an efficient device for controlling the emission of fine particles. The concentration of flue gas treated by conventional bag filter is generally below 100g/nm ³ . However, the inlet flue gas dust concentration of the bag filter used for dry desulfurization is as high as 500-2000g/nm ³ , so the conventional bag filter cannot be used in high concentration occasions.

Contents of the invention

The purpose of this utility model is to provide a high-concentration bag-type dust collector, so that the bag-type dust collector can adapt to the occasion with high dust concentration in the flue gas, and at the same time improve the collection efficiency of the bag-type dust collector for fine dust and meet the requirements of the dust discharge standard. Require.

The technical solution of the utility model is:

A high-concentration bag filter, including a flue gas inlet, a shell, a filter bag, an upper box, a pulse injection device, an ash hopper, an ash discharge valve, and a flue gas outlet, which are vertically arranged in the shell close to the flue gas inlet The clapboard divides the shell of the bag filter into a part, which is equivalent to forming a mechanical settling chamber, which pre-treats the high-concentration dust and settles the larger particles of dust, and then puts them on the clapboard. The air distributor is arranged in parallel at the back, and the air distributor plays the role of rectification, which is convenient for the filter bag to improve the filtration efficiency, thereby improving the collection efficiency of fine dust.

The beneficial effect of the utility model is that: the composite technology of mechanical dust removal and bag type dust removal is adopted to improve the dust removal efficiency, and at the same time, the operation is stable, and the dust removal efficiency can reach more than 99%.

Description of drawings

Figure 1 Structural diagram of high concentration bag filter

In the figure 1. Smoke inlet, 2. Partition, 3. Air distributor, 4. Filter bag, 5. Pulse injection device, 6. Upper box, 7. Smoke outlet, 8. Shell, 9. Ash hopper, 10. Ash discharge valve

Detailed ways

The utility model is described further below:

A high-concentration bag-type dust collector consists of a flue gas inlet 1, a housing 8, a filter bag 4, an upper box 6, a pulse injection device 5, an ash hopper 9, an ash discharge valve 10, and a flue gas outlet 7. A partition 2 is arranged vertically near the inlet 1 in the housing 8 , and an airflow distributor 3 is arranged in parallel behind the partition 2 .

When in use, the high-concentration dust-containing flue gas enters the bag filter from top to bottom through the flue gas inlet 1, and performs pre-separation in the pre-separation space formed by the partition 2, and the separated dust falls into the ash hopper 9; the flue gas Rectification is realized through the air distributor 3 . The rectified flue gas is filtered through the filter bag 4 . The filtered flue gas is collected into the upper box body 6 and discharged from the flue gas outlet 7.

As the filtration progresses, the resistance of the filter bag increases and dust removal is required. Dust removal is realized by pulse injection device 5. The dust on the surface of the filter bag falls off to the ash hopper 9 and is discharged through the ash discharge valve 10.

Claims (1)

1. A high-concentration bag filter, consisting of a flue gas inlet (1), a housing (8), a filter bag (4), an upper box (6), a pulse injection device (5), an ash hopper (9 ), ash unloading valve (10), and flue gas outlet (7), which is characterized in that a partition (2) is vertically arranged in the housing (8) close to the flue gas inlet (1), behind the partition (2) Arrange the air distributors (3) in parallel.