Crude sulfur treatment system

Abstract

The utility model discloses a crude sulfur treatment system which comprises a hot filter, a liquid inlet pipe, a blow-off pipe, a purging pipe, a steam pipe and a condensate water discharge bypass pipe, one end of the liquid inlet pipe is connected with the hot filter, the other end of the liquid inlet pipe is connected with a slurry pump placed in a crude molten pool, and a liquid inlet heat preservation valve is installed on the liquid inlet pipe; one end of the blow-off pipe is connected with the hot filter, the other end of the blow-off pipe extends into the rough molten pool, and the blow-off pipe is provided with a blow-off heat preservation valve; one end of the purging pipe is connected with the liquid inlet pipe and located between the hot filter and the liquid inlet heat preservation valve, and the other end of the purging pipe is provided with a purging heat preservation valve. One end of the steam pipe is connected with the purging heat-preservation valve, and the other end of the steam pipe is connected with a steam source; one end of the condensate water discharge bypass pipe is installed on the steam pipe, and a condensate water discharge valve is installed on the condensate water discharge bypass pipe. The device can improve the yield of sulfur and reduce the sulfur content of hot filter residues.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfur concentrate processing, and more specifically to a crude sulfur processing system. Background Art

[0002] The oxygen pressure leaching process of zinc sulfide concentrate is divided into one-stage oxygen pressure leaching and two-stage oxygen pressure leaching. The two-stage oxygen pressure leaching is a unique leaching process. The leaching slag contains valuable elements such as sulfur, copper, lead, zinc and silver. At present, the leaching slag is produced into sulfur concentrate and tailings through the flotation process. The sulfur concentrate enters the sulfur melting process to recover elemental sulfur, and the tailings are recovered through the lead smelting system. Lead and silver.

[0003] However, in the current sulfur recovery process of oxygen pressure leaching slag, the sulfur concentrate output is low due to the influence of factors such as the moisture content of the sulfur concentrate and the utilization of steam thermal energy. At the same time, since the liquid sulfur containing slag needs to pass through a hot filter for liquid-solid separation, but the hot filter uses a 160-mesh stainless steel filter as the filter medium, the hot filter slag contains a high sulfur content, resulting in a waste of sulfur and an increase in production and processing costs.

[0004] Therefore, providing a crude sulfur processing system is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a crude sulfur processing system to increase sulfur production and reduce sulfur content in hot filter residues.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A crude sulfur processing system comprises a heat filter, a liquid inlet pipe and a drain pipe, wherein one end of the liquid inlet pipe is connected to the heat filter, the other end of the liquid inlet pipe is connected to a slurry pump placed in a rough molten pool, and the liquid inlet pipe is provided with a liquid inlet insulation valve; one end of the drain pipe is connected to the heat filter, the other end of the drain pipe extends into the rough molten pool, and the drain pipe is provided with a drain insulation valve; further comprising a purge pipe, a steam pipe and a condensate discharge bypass pipe, one end of the purge pipe is connected to the liquid inlet pipe and is located between the heat filter and the liquid inlet insulation valve, and the other end of the purge pipe is provided with a purge insulation valve; one end of the steam pipe is connected to the purge insulation valve, and the other end of the steam pipe is connected to a steam source; one end of the condensate discharge bypass pipe is provided on the steam pipe, and a condensate discharge valve is provided on the condensate discharge bypass pipe.

[0008] Furthermore, the purge pipe, the steam pipe, the condensate discharge bypass pipe, the purge insulation valve and the condensate discharge valve are all made of stainless steel.

[0009] It can be seen that the utility model provides a crude sulfur processing system, which has the following beneficial effects compared with the prior art:

[0010] Steam is used to perform steam replacement and purge on the hot filter after the operation is completed (full pressure), and the residual sulfur in the hot filter residue is converted into sulfur products, thereby reducing the sulfur content of the hot filter residue, increasing the sulfur production, and providing the prerequisite for the reuse of the hot filter residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0012] Figure 1 The accompanying drawing is a structural schematic diagram of a crude sulfur processing system provided by the utility model. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] like Figure 1 As shown, the embodiment of the utility model discloses a crude sulfur processing system, including a hot filter 1, a liquid inlet pipe 2, a sewage pipe 3, a purge pipe 4, a steam pipe 5 and a condensate discharge bypass pipe 6, wherein one end of the liquid inlet pipe 2 is connected to the hot filter 1, and the other end of the liquid inlet pipe 2 is connected to a slurry pump 8 placed in a rough molten pool 7, and a liquid inlet insulation valve 9 is installed on the liquid inlet pipe 2; one end of the sewage pipe 3 is connected to the hot filter 1, and the other end of the sewage pipe 3 extends into the rough molten pool 7, and the sewage pipe 3 is connected to the hot filter 1. A sewage insulation valve 10 is installed; one end of the purge pipe 4 is connected to the liquid inlet pipe 2 and is located between the hot filter 1 and the liquid inlet insulation valve 9, and the other end of the purge pipe 4 is installed with a purge insulation valve 11; one end of the steam pipe 5 is connected to the purge insulation valve 11, and the other end of the steam pipe 5 is connected to the steam source. In this embodiment, the steam source is a steam generator; one end of the condensate discharge bypass pipe 6 is installed on the steam pipe 5, and a condensate discharge valve 12 is installed on the condensate discharge bypass pipe 6. The utility model can increase sulfur production and reduce sulfur content in hot filter residues.

[0015] Specifically, the purge pipe 4, the steam pipe 5, the condensate discharge bypass pipe 6, the purge insulation valve 11 and the condensate discharge valve 12 are all made of stainless steel.

[0016] The utility model crude sulfur processing method comprises the following steps:

[0017] 1) Fill the hot filter 1;

[0018] 2) Close the liquid inlet insulation valve 9 and the purge insulation valve 11, open the condensate discharge valve 12, drain the condensate in the steam pipe 5, and then close the condensate discharge valve 12, that is, drain the condensate in the steam pipe 5 before purge to avoid tube clogging;

[0019] 3) Open the steam source and the purge insulation valve 11 to perform the purge operation, and the sulfur is purged into the distillation pool through the hot filter 1; the steam does not introduce other impurities, and secondly, the steam has the advantage of high temperature, which will not cause the molten hot filter residue to cool and harden in the hot filter 1, and will not affect the quality of the purged sulfur; in this embodiment, the steam pressure generated by the steam source is greater than 0.7MPa, so as to avoid sulfur backflow;

[0020] 4) Close the steam source and purge insulation valve 11, and open the sewage insulation valve 10 to release the pressure.

[0021] The utility model has been applied in actual production, the sulfur content of hot filter residue can be stably controlled at about 60%, the sulfur output is increased by 4.8t / unit, and the sulfur output can be stabilized at 80t / d.

[0022] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0023] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crude sulfur processing system, comprising a heat filter, a liquid inlet pipe and a sewage pipe, wherein one end of the liquid inlet pipe is connected to the heat filter, the other end of the liquid inlet pipe is connected to a slurry pump placed in a crude molten pool, and a liquid inlet insulation valve is installed on the liquid inlet pipe; one end of the sewage pipe is connected to the heat filter, the other end of the sewage pipe extends into the crude molten pool, and a sewage insulation valve is installed on the sewage pipe; characterized in that: It also includes a purge pipe, a steam pipe and a condensate discharge bypass pipe, one end of the purge pipe is connected to the liquid inlet pipe and is located between the heat filter and the liquid inlet insulation valve, and the other end of the purge pipe is installed with a purge insulation valve; one end of the steam pipe is connected to the purge insulation valve, and the other end of the steam pipe is connected to a steam source; one end of the condensate discharge bypass pipe is installed on the steam pipe, and the condensate discharge bypass pipe is installed with a condensate discharge valve.

2. A crude sulfur processing system according to claim 1, characterized in that: The purge pipe, the steam pipe, the condensate discharge bypass pipe, the purge insulation valve and the condensate discharge valve are all made of stainless steel.

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